Tuesday’s Newsletter: Microcontroller Watch

Coming to your inbox tomorrow: Circuit Cellar’s Microcontroller Watch newsletter. Tomorrow’s newsletter keeps you up-to-date on latest microcontroller news. In this section, we examine the microcontrollers along with their associated tools and support products.

Bonus: We’ve added Drawings for Free Stuff to our weekly newsletters. Make sure you’ve subscribed to the newsletter so you can participate.

Already a Circuit Cellar Newsletter subscriber? Great!
You’ll get your Microcontroller Watch newsletter issue tomorrow.

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Our weekly Circuit Cellar Newsletter will switch its theme each week, so look for these in upcoming weeks:

IoT Technology Focus. (12/18) Covers what’s happening with Internet-of-Things (IoT) technology–-from devices to gateway networks to cloud architectures. This newsletter tackles news and trends about the products and technologies needed to build IoT implementations and devices.

Embedded Boards.(12/24) (Monday) The focus here is on both standard and non-standard embedded computer boards that ease prototyping efforts and let you smoothly scale up to production volumes.

Analog & Power. (1/2) (Wednesday) This newsletter content zeros in on the latest developments in analog and power technologies including DC-DC converters, AD-DC converters, power supplies, op amps, batteries and more.

Tuesday’s Newsletter: Analog & Power

Coming to your inbox tomorrow: Circuit Cellar’s Analog & Power newsletter. Tomorrow’s newsletter content zeros in on the latest developments in analog and power technologies including ADCs, DACs, DC-DC converters, AD-DC converters, power supplies, op amps, batteries and more.

Bonus: We’ve added Drawings for Free Stuff to our weekly newsletters. Make sure you’ve subscribed to the newsletter so you can participate.

Already a Circuit Cellar Newsletter subscriber? Great!
You’ll get your Analog & Power newsletter issue tomorrow.

Not a Circuit Cellar Newsletter subscriber?
Don’t be left out! Sign up now:

Our weekly Circuit Cellar Newsletter will switch its theme each week, so look for these in upcoming weeks:

Microcontroller Watch. (12/11) This newsletter keeps you up-to-date on latest microcontroller news. In this section, we examine the microcontrollers along with their associated tools and support products.

IoT Technology Focus. (12/18) Covers what’s happening with Internet-of-Things (IoT) technology–-from devices to gateway networks to cloud architectures. This newsletter tackles news and trends about the products and technologies needed to build IoT implementations and devices.

Embedded Boards.(12/24) The focus here is on both standard and non-standard embedded computer boards that ease prototyping efforts and let you smoothly scale up to production volumes.

Next Newsletter: Embedded Boards

Coming to your inbox tomorrow: Circuit Cellar’s Embedded Boards newsletter. Tomorrow’s newsletter content focuses on both standard and non-standard embedded computer boards that ease prototyping efforts and let you smoothly scale up to production volumes.

Bonus: We’ve added Drawings for Free Stuff to our weekly newsletters. Make sure you’ve subscribed to the newsletter so you can participate.

Already a Circuit Cellar Newsletter subscriber? Great!
You’ll get your
Embedded Boards newsletter issue tomorrow.

Not a Circuit Cellar Newsletter subscriber?
Don’t be left out! Sign up now:

Our weekly Circuit Cellar Newsletter will switch its theme each week, so look for these in upcoming weeks:

Analog & Power. (12/4) This newsletter content zeros in on the latest developments in analog and power technologies including DC-DC converters, AD-DC converters, power supplies, op amps, batteries and more.

Microcontroller Watch (12/11) This newsletter keeps you up-to-date on latest microcontroller news. In this section, we examine the microcontrollers along with their associated tools and support products.

IoT Technology Focus. (12/18) Covers what’s happening with Internet-of-Things (IoT) technology–-from devices to gateway networks to cloud architectures. This newsletter tackles news and trends about the products and technologies needed to build IoT implementations and devices.

Tuesday’s Newsletter: IoT Tech Focus

Coming to your inbox tomorrow: Circuit Cellar’s IoT Technology Focus newsletter. Tomorrow’s newsletter covers what’s happening with Internet-of-Things (IoT) technology–-from devices to gateway networks to cloud architectures. This newsletter tackles news and trends about the products and technologies needed to build IoT implementations and devices.

Bonus: We’ve added Drawings for Free Stuff to our weekly newsletters. Make sure you’ve subscribed to the newsletter so you can participate.

Already a Circuit Cellar Newsletter subscriber? Great!
You’ll get your IoT Technology Focus newsletter issue tomorrow.

Not a Circuit Cellar Newsletter subscriber?
Don’t be left out! Sign up now:

Our weekly Circuit Cellar Newsletter will switch its theme each week, so look for these in upcoming weeks:

Embedded Boards.(11/27) The focus here is on both standard and non-standard embedded computer boards that ease prototyping efforts and let you smoothly scale up to production volumes.

Analog & Power. (12/4) This newsletter content zeros in on the latest developments in analog and power technologies including DC-DC converters, AD-DC converters, power supplies, op amps, batteries and more.

Microcontroller Watch (12/11) This newsletter keeps you up-to-date on latest microcontroller news. In this section, we examine the microcontrollers along with their associated tools and support products.

NanoPi Neo4 SBC Breaks RK3399 Records for Size and Price

By Eric Brown

In August, FriendlyElec introduced the NanoPi M4, which was then the smallest, most affordable Rockchip RK3399 based SBC yet. The company has now eclipsed the Raspberry Pi style, 85 mm x 5 6 mm NanoPi M4 on both counts, with a 60 mm x 45 mm size and $45 promotional price ($50 standard). The similarly open-spec, Linux and Android-ready NanoPi Neo4, however, is not likely to beat the M4 on performance, as it ships with only 1 GB of DDR3-1866 instead of 2 GB or 4 GB of LPDDR3.

 
NanoPi Neo4 and detail view
(click images to enlarge)

This is the first SBC built around the hexa-core RK3399 that doesn’t offer 2GB RAM at a minimum. That includes the still unpriced Khadas Edge, which will soon launch on Indiegogo, and Vamrs’ $99 and up, 96Boards form factor Rock960, in addition to the many other RK3399 based entries listed in our June catalog of 116 hacker boards.

NanoPi M4

Considering that folks are complaining that the quad -A53, 1.4 GHz Raspberry Pi 3+ is limited to only 1GB, it’s hard to imagine the RK3399 is going to perform up to par with only 1GB. The SoC has a pair of up to 2GHz Cortex-A72 cores and four Cortex -A53 cores clocked to up to 1.5GHz plus a high-end Mali-T864 GPU.

Perhaps size was a determining factor in limiting the board to 1 GB along with price. Indeed, the 60 mm x 45 mm footprint ushers the RK3399 into new space-constrained environments. Still, this is larger than the earlier 40 mm x 40 mm Neo boards or the newer, 52 mm x 40mm NanoPi Neo Plus2, which is based on an Allwinner H5.

We’re not sure why FriendlyElec decided against calling the new SBC the NanoPi Neo 3, but there have been several Neo boards that have shipped since the Neo2, including the NanoPi Neo2-LTS and somewhat Neo-like, 50 x 25.4mm NanoPi Duo.

The NanoPi Neo4 differs from other Neo boards in that it has a coastline video port, in this case an HDMI 2.0a port with support for up to 4K@60Hz video with HDCP 1.4/2.2 and audio out. Another Neo novelty is the 4-lane MIPI-CSI interface for up to a 13-megapixel camera input.


 
NanoPi Neo4 with and without optional heatsink
(click images to enlarge)
You can boot a variety of Linux and Android distributions from the microSD slot or eMMC socket (add $12 for 16GB eMMC). Thanks to the RK3399, you get native Gigabit Ethernet. There’s also a wireless module with 802.11n (now called Wi-Fi 4) limited to 2.4 GHz Wi-Fi and Bluetooth 4.0.

The NanoPi Neo4 is equipped with coastline USB 3.0 and USB 2.0 host ports plus a Type-C power and OTG port and an onboard USB 2.0 header. The latter is found on one of the two smaller GPIO connectors that augment the usual 40-pin header, which like other RK3399 boards, comes with no claims of Raspberry Pi compatibility. Other highlights include an RTC and -20 to 70℃ support.

Specifications listed for the NanoPi Neo4 include:

  • Processor — Rockchip RK3399 (2x Cortex-A72 at up to 2.0 GHz, 4x Cortex-A53 at up to 1.5 GHz); Mali-T864 GPU
  • Memory:
    • 1GB DDR3-1866 RAM
    • eMMC socket with optional ($12) 16GB eMMC
    • MicroSD slot for up to 128GB
  • Wireless — 802.11n (2.4GHz) with Bluetooth 4.0; ext. antenna
  • Networking — Gigabit Ethernet port
  • Media:
    • HDMI 2.0a port (with audio and HDCP 1.4/2.2) for up to 4K at 60 Hz
    • 1x 4-lane MIPI-CSI (up to 13MP);
  • Other I/O:
    • USB 3.0 host port
    • USB 2.0 Type-C port (USB 2.0 OTG or power input)
    • USB 2.0 host port
  • Expansion:
    • GPIO 1: 40-pin header — 3x 3V/1.8V I2C, 3V UART, SPDIF_TX, up to 8x 3V GPIOs, PCIe x2, PWM, PowerKey
    • GPIO 2: 1.8V 8-ch. I2S
    • GPIO 3: Debug UART, USB 2.0
  • Other features — RTC; 2x LEDs; optional $6 heatsink, LCD, and cameras
  • Power — DC 5V/3A input or USB Type-C; optional $9 adapter
  • Operating temperature — -20 to 70℃
  • Dimensions — 60 x 45mm; 8-layer PCB
  • Weight – 30.25 g
  • Operating system — Linux 4.4 LTS with U-boot 2014.10; Android 7.1.2 or 8.1 (requires eMMC module); Lubuntu 16.04 (32-bit); FriendlyCore 18.04 (64-bit), FriendlyDesktop 18.04 (64-bit); Armbian via third party;

Further information

The NanoPi Neo4 is available for a promotional price of $45 (regularly $50) plus shipping, which ranges from $16 to $20. More information may be found on FriendlyElec’s NanoPi Neo4 product page and wiki, which includes schematics, CAD files, and OS download links.

This article originally appeared on LinuxGizmos.com on October 9.

FriendlyElec | www.friendlyarm.com

Tuesday’s Newsletter: Microcontroller Watch

Coming to your inbox tomorrow: Circuit Cellar’s Microcontroller Watch newsletter. Tomorrow’s newsletter keeps you up-to-date on latest microcontroller news. In this section, we examine the microcontrollers along with their associated tools and support products.

Bonus: We’ve added Drawings for Free Stuff to our weekly newsletters. Make sure you’ve subscribed to the newsletter so you can participate.

Already a Circuit Cellar Newsletter subscriber? Great!
You’ll get your Microcontroller Watch newsletter issue tomorrow.

Not a Circuit Cellar Newsletter subscriber?
Don’t be left out! Sign up now:

Our weekly Circuit Cellar Newsletter will switch its theme each week, so look for these in upcoming weeks:

IoT Technology Focus. (11/20) Covers what’s happening with Internet-of-Things (IoT) technology–-from devices to gateway networks to cloud architectures. This newsletter tackles news and trends about the products and technologies needed to build IoT implementations and devices.

Embedded Boards.(11/27) The focus here is on both standard and non-standard embedded computer boards that ease prototyping efforts and let you smoothly scale up to production volumes.

Analog & Power. (12/4) This newsletter content zeros in on the latest developments in analog and power technologies including DC-DC converters, AD-DC converters, power supplies, op amps, batteries and more.

Tuesday’s Newsletter: Analog & Power

Coming to your inbox tomorrow: Circuit Cellar’s Analog & Power newsletter. Tomorrow’s newsletter content zeros in on the latest developments in analog and power technologies including ADCs, DACs, DC-DC converters, AD-DC converters, power supplies, op amps, batteries and more.

Bonus: We’ve added Drawings for Free Stuff to our weekly newsletters. Make sure you’ve subscribed to the newsletter so you can participate.

Already a Circuit Cellar Newsletter subscriber? Great!
You’ll get your Analog & Power newsletter issue tomorrow.

Not a Circuit Cellar Newsletter subscriber?
Don’t be left out! Sign up now:

Our weekly Circuit Cellar Newsletter will switch its theme each week, so look for these in upcoming weeks:

Microcontroller Watch. (12/11) This newsletter keeps you up-to-date on latest microcontroller news. In this section, we examine the microcontrollers along with their associated tools and support products.

IoT Technology Focus. (12/18) Covers what’s happening with Internet-of-Things (IoT) technology–-from devices to gateway networks to cloud architectures. This newsletter tackles news and trends about the products and technologies needed to build IoT implementations and devices.

Embedded Boards.(12/24) The focus here is on both standard and non-standard embedded computer boards that ease prototyping efforts and let you smoothly scale up to production volumes.

Bonus Newsletter: Digital Signage

Coming to your inbox tomorrow: October has a 5th Tuesday, so we’re bringing you a bonus newsletter: Digital Signage. Digital signage ranks among the most dynamic areas of today’s embedded computing space. Makers of digital signage players, board-level products and other technologies continue to roll out new solutions for implementing powerful digital signage systems. This newsletter looks at the latest technology trends and product developments in digital signage.

Also, we’ve added Drawings for Free Stuff to our weekly newsletters. Make sure you’ve subscribed to the newsletter so you can participate.

Already a Circuit Cellar Newsletter subscriber? Great!
You’ll get your Digital Signage
newsletter issue tomorrow.

Not a Circuit Cellar Newsletter subscriber?
Don’t be left out! Sign up now:

Our weekly Circuit Cellar Newsletter switches its theme each week, so look for these in upcoming weeks:

Analog & Power. (11/6) This newsletter content zeros in on the latest developments in analog and power technologies including DC-DC converters, AD-DC converters, power supplies, op amps, batteries and more.

Microcontroller Watch. (11/13) This newsletter keeps you up-to-date on latest microcontroller news. In this section, we examine the microcontrollers along with their associated tools and support products.

IoT Technology Focus. (11/20) Covers what’s happening with Internet-of-Things (IoT) technology–-from devices to gateway networks to cloud architectures. This newsletter tackles news and trends about the products and technologies needed to build IoT implementations and devices.

Embedded Boards. (11/27) This newsletter content focuses on both standard and non-standard embedded computer boards that ease prototyping efforts and let you smoothly scale up to production volumes.

Next Newsletter: Embedded Boards

Coming to your inbox tomorrow: Circuit Cellar’s Embedded Boards newsletter. Tomorrow’s newsletter content focuses on both standard and non-standard embedded computer boards that ease prototyping efforts and let you smoothly scale up to production volumes.

Bonus: We’ve added Drawings for Free Stuff to our weekly newsletters. Make sure you’ve subscribed to the newsletter so you can participate.

Already a Circuit Cellar Newsletter subscriber? Great!
You’ll get your
Embedded Boards newsletter issue tomorrow.

Not a Circuit Cellar Newsletter subscriber?
Don’t be left out! Sign up now:

Our weekly Circuit Cellar Newsletter will switch its theme each week, so look for these in upcoming weeks:

October has a 5th Tuesday, so we’re bringing you a bonus newsletter:
Digital Signage (10/30)  Digital signage ranks among the most dynamic areas of today’s embedded computing space. Makers of digital signage players, board-level products and other technologies continue to roll out new solutions for implementing powerful digital signage systems. This newsletter looks at the latest technology trends and product developments in digital signage.

Analog & Power. (11/6) This newsletter content zeros in on the latest developments in analog and power technologies including DC-DC converters, AD-DC converters, power supplies, op amps, batteries and more.

Microcontroller Watch (11/13) This newsletter keeps you up-to-date on latest microcontroller news. In this section, we examine the microcontrollers along with their associated tools and support products.

IoT Technology Focus. (11/20) Covers what’s happening with Internet-of-Things (IoT) technology–-from devices to gateway networks to cloud architectures. This newsletter tackles news and trends about the products and technologies needed to build IoT implementations and devices.

Managed Linux and Zephyr Distros for IoT offer OTA and Container Tech

By Eric Brown

A Cambridge, UK based startup called Foundries.io, which is funded by Linaro, has launched a microPlatforms service with managed, subscription-based Linux and Zephyr distributions. The microPlatforms offering will target IoT, edge, and automotive applications, and provide continuous over-the-air (OTA) updates to improve security. Linaro CEO George Grey also serves as CEO of Foundries.io.

The distributions are designed to work with any private or public cloud platform, with the microPlatform cloud service acting as an intermediary. The microPlatforms packages include firmware, kernel, services, and applications, “delivered continuously from initial product design to end-of-life,” says Foundries.io.


Linux microPlatform architecture
(click image to enlarge)
Benefits from microPlatforms include improved security, lower development costs, and “faster time-to-market for products across a wide range of IoT connected devices,” says the company. There’s also a combined Linux/Zephyr offering that bridges both sides of the IoT architectural divide designed for projects that include both a Linux gateway/edge device and Zephyr controlled sensor devices.

Subscriptions range from $10 per month for evaluation and non-commercial use to $10,000 or $25,000 per year for professional Zephyr and Linux packages, respectfully. There are no per unit fees, and Foundries.io notes: “We regularly upstream our open source work; you can end your subscription any time and keep using the software.” There’s also a community website with forums and support services.

Linux microPlatforms

The Linux microPlatform (LmP) supports support Arm, Intel, and RISC-V based devices. The initial targets include the Raspberry Pi and several 96Boards (see farther below). LmP starts with a minimal Linux distro built with OpenEmbedded/Yocto and “a recent stable kernel.” The distribution is designed to be compact and resource efficient, with minimal attack surfaces.


Linux microPlatforms with containers
(click image to enlarge)
The Linux stack includes secure updatable firmware and a Docker container-based application runtime with reference container Dockerfiles and images. Source code is available, and you can also download binaries for supported target boards. The use of containers is optional, as you can also run LmP natively.

LmP also includes a cloud management service, which offers a “continuously tested and stabilized stream of updates,” says Foundries.io. The platform lets you “securely and remotely manage your product’s software” using standard tools such as Ansible and Kubernetes.

DragonBoard 820C

The initial LmP targets include:

Zephyr microPlatforms

The Zephyr microPlatform is the first downstream distribution for the Linux Foundation hosted, open source Zephyr RTOS. ZmP
builds on the Zephyr RTOS foundation with “MCUboot software, services, and reference applications to provide a continuously tested, secure, updatable, cross-architecture solution for microcontroller-based products,” says the startup.

 
Zephyr microPlatform architecture (left) and combined Linux and Zephyr microPlatform 
(click images to enlarge)
The Zephyr stack supports all the hardware listed by the Zephyr Project, including products from Nordic Semiconductor, NXP, and STMicroelectronics. This week, the Zephyr Project announced an expansion of support to 100 boards, including Arduino-compatible HiFive1 and Arduino Cinque boards, and the BBC Microbit and 96Boards Carbon. Supported SBCs that primarily run Linux but can also run Zephyr on their MCU companion chips include the MinnowBoard Max, Udoo Neo, and UP Squared.

Toradex and Linaro partnerships

Foundries.io’s launch partners are Toradex and Linaro — the open source code development organization backed by Arm and several of its major licensees. Linaro will offer microPlatforms support for its 96Boards SBCs. Toradex, whose Colibri iMX7 is a target platform, is “using the Linux microPlatform as a secure and updateable base for its upcoming software offering,” says Foundries.io. Toradex CTO Roman Schnarwiler adds: “Toradex will be announcing exciting news about our upcoming software offerings for our SoMs, based on the Foundries.io Linux microPlatform soon.”

Colibri iMX7

Also today, Toradex announced a software development partnership with The Qt Company. Toradex will provide the Qt development platform on its modules including Qt Device Creation. It will also Boot2Qt with Toradex Easy Installer.

OTA and containers in IoT

Continuous OTA updates are widely seen as one the best ways to improve IoT security. OTA is central to several recent IoT frameworks, including Google’s recently announced Cloud IoT Edge for devices equipped with its new Edge TPU machine learning co-processor chips. OTA is also central to Microsoft’s secure, Linux-based Azure Sphere IoT platform, which was further detailed today at the Hot Chips 2018conference.

Container technology, meanwhile, is seen as a way to ease embedded Linux remote management and automated updates. For example, Resin.io provides an embedded Linux container technology with its OTA-enabled ResinOS. Canonical’s Ubuntu Corealso uses a container-like scheme to provide transactional updates.

Further information

The Foundries.io microPlatforms subscriptions are now available, ranging from $10 per month for evaluation and non-commercial use to $10,000 or $25,000 per year for professional Zephyr and Linux packages, respectfully. Downloads of microPlatforms source code, binaries, and documentation are available at the Foundries.io website.

This article originally appeared on LinuxGizmos.com on August 21.

Foundries.io | foundries.io

Tuesday’s Newsletter: IoT Tech Focus

Coming to your inbox tomorrow: Circuit Cellar’s IoT Technology Focus newsletter. Tomorrow’s newsletter covers what’s happening with Internet-of-Things (IoT) technology–-from devices to gateway networks to cloud architectures. This newsletter tackles news and trends about the products and technologies needed to build IoT implementations and devices.

Bonus: We’ve added Drawings for Free Stuff to our weekly newsletters. Make sure you’ve subscribed to the newsletter so you can participate.

Already a Circuit Cellar Newsletter subscriber? Great!
You’ll get your IoT Technology Focus newsletter issue tomorrow.

Not a Circuit Cellar Newsletter subscriber?
Don’t be left out! Sign up now:

Our weekly Circuit Cellar Newsletter will switch its theme each week, so look for these in upcoming weeks:

Embedded Boards.(10/23) The focus here is on both standard and non-standard embedded computer boards that ease prototyping efforts and let you smoothly scale up to production volumes.

October has a 5th Tuesday, so we’re bringing you a bonus newsletter:
Digital Signage (10/30)  Digital signage ranks among the most dynamic areas of today’s embedded computing space. Makers of digital signage players, board-level products and other technologies continue to roll out new solutions for implementing powerful digital signage systems. This newsletter looks at the latest technology trends and product developments in digital signage.

Analog & Power. (11/6) This newsletter content zeros in on the latest developments in analog and power technologies including DC-DC converters, AD-DC converters, power supplies, op amps, batteries and more.

Microcontroller Watch (11/13) This newsletter keeps you up-to-date on latest microcontroller news. In this section, we examine the microcontrollers along with their associated tools and support products.

Tuesday’s Newsletter: Analog & Power

Coming to your inbox tomorrow: Circuit Cellar’s Analog & Power newsletter. Tomorrow’s newsletter content zeros in on the latest developments in analog and power technologies including ADCs, DACs, DC-DC converters, AD-DC converters, power supplies, op amps, batteries and more.

Bonus: We’ve added Drawings for Free Stuff to our weekly newsletters. Make sure you’ve subscribed to the newsletter so you can participate.

Already a Circuit Cellar Newsletter subscriber? Great!
You’ll get your Analog & Power newsletter issue tomorrow.

Not a Circuit Cellar Newsletter subscriber?
Don’t be left out! Sign up now:

Our weekly Circuit Cellar Newsletter will switch its theme each week, so look for these in upcoming weeks:

Microcontroller Watch. (10/9) This newsletter keeps you up-to-date on latest microcontroller news. In this section, we examine the microcontrollers along with their associated tools and support products.

IoT Technology Focus. (10/16) Covers what’s happening with Internet-of-Things (IoT) technology–-from devices to gateway networks to cloud architectures. This newsletter tackles news and trends about the products and technologies needed to build IoT implementations and devices.

Embedded Boards.(10/23) The focus here is on both standard and non-standard embedded computer boards that ease prototyping efforts and let you smoothly scale up to production volumes.

October has a 5th Tuesday, so we’re bringing you a bonus newsletter:
Digital Signage (10/30)  Digital signage ranks among the most dynamic areas of today’s embedded computing space. Makers of digital signage players, board-level products and other technologies continue to roll out new solutions for implementing powerful digital signage systems. This newsletter looks at the latest technology trends and product developments in digital signage.

Raspberry Pi I/O Add-On Targets Aquaponics and Hydroponics

By Eric Brown

We knew it was only a matter of time before we covered a board from Luxembourg, and that time has come. Rodange, Luxembourg based Upsilon Engineering, which is led by embedded engineer Yann Leidwanger, has gone to Kickstarter to launch its BioControle add-on board for the Raspberry Pi 3. The board can be used as a general purpose I/O and DAQ add-on but is specifically designed as a control board for aquaponics and hydroponics gardening.

 
BioControle prototype with Raspberry Pi 3 (left) and bare PCB on its own
(click images to enlarge)
The BioControle, which we spotted on Geeky Gadgets is available for 76 Euros ($89) through Oct. 17. Assuming Upsilon can raise another $7,000, shipments are expected in November.


BioControle controlling aquaponics system
(click image to enlarge)
The BioControle is a more general purpose offering than the recent Autogrow OpenMinder root zone monitor HAT for the Raspberry Pi, which includes software that helps manage water, pH, and nutrient usage in hydroponic farming. The proof of concept was developed for an aquaponics project at the Thilab FabLab based in Thionville, France. Leidwanger then built a prototype with additional features that also supports hydroponics and other projects that need a mix of servos, sensors, relays, and I/Os.

 
BioControle detail views
(click images to enlarge)
Specifications listed for the BioControle include:

  • 4x power relays outputs
  • 2x inputs/outputs for temperature and humidity sensors
  • 2x logical inputs and 2x logical outputs
  • Real Time Clock
  • EEPROM
  • 12-bit ADC
  • 12-bit DAC
  • 2x power servomotor outputs

All interfaces are said to be protected against reverse polarity, undervoltage, and overvoltage. It also offers “full protection between your application and your Raspberry Pi” with the help of buffers, level shifters, protection diodes, and serial protection resistance,” says Upsilon. The board provides 5 V and 3.3 V power supply supervisors “connected on LED and Raspberry Pi input,” and can run on a standard 230VAC adapter.

The design includes a cutout that enables easy access to the Raspberry Pi 3’s MIPI-CSI and DSI headers. The open source BioControle is available with schematics, pinout, and Python example codes

 
BioControle block diagram (left) and upcoming v2.0 design
(click images to enlarge)
The prototype has been thoroughly bug-tested, but Upsilon needs funding to build a v2.0 model that improves the servomotor headers, which are designed to dispense fish food on aquaponics systems. It also removes a second power supply header and several capacitors.

Further information

The BioControle is available on Kickstarter for 76 Euros ($89) through Oct. 17. Volume discounts are available, and assuming the project is funded, shipments are expected in November. More information may be found on the BioControle Kickstarter page and the Upsilon Engineering website.

This article originally appeared on LinuxGizmos.com on September 18.

Upsilon Engineering | www.upsilon-engineering.lu

Next Newsletter: Embedded Boards

Coming to your inbox tomorrow: Circuit Cellar’s Embedded Boards newsletter. Tomorrow’s newsletter content focuses on both standard and non-standard embedded computer boards that ease prototyping efforts and let you smoothly scale up to production volumes.

Bonus: We’ve added Drawings for Free Stuff to our weekly newsletters. Make sure you’ve subscribed to the newsletter so you can participate.

Already a Circuit Cellar Newsletter subscriber? Great!
You’ll get your
Embedded Boards newsletter issue tomorrow.

Not a Circuit Cellar Newsletter subscriber?
Don’t be left out! Sign up now:

Our weekly Circuit Cellar Newsletter will switch its theme each week, so look for these in upcoming weeks:

October has a 5th Tuesday, so we’re bringing you a bonus newsletter:
Digital Signage (10/30)  Digital signage ranks among the most dynamic areas of today’s embedded computing space. Makers of digital signage players, board-level products and other technologies continue to roll out new solutions for implementing powerful digital signage systems. This newsletter looks at the latest technology trends and product developments in digital signage.

Analog & Power. (11/6) This newsletter content zeros in on the latest developments in analog and power technologies including DC-DC converters, AD-DC converters, power supplies, op amps, batteries and more.

Microcontroller Watch (11/13) This newsletter keeps you up-to-date on latest microcontroller news. In this section, we examine the microcontrollers along with their associated tools and support products.

IoT Technology Focus. (11/20) Covers what’s happening with Internet-of-Things (IoT) technology–-from devices to gateway networks to cloud architectures. This newsletter tackles news and trends about the products and technologies needed to build IoT implementations and devices.

Tuesday’s Newsletter: IoT Tech Focus

Coming to your inbox tomorrow: Circuit Cellar’s IoT Technology Focus newsletter. Tomorrow’s newsletter covers what’s happening with Internet-of-Things (IoT) technology–-from devices to gateway networks to cloud architectures. This newsletter tackles news and trends about the products and technologies needed to build IoT implementations and devices.

Bonus: We’ve added Drawings for Free Stuff to our weekly newsletters. Make sure you’ve subscribed to the newsletter so you can participate.

Already a Circuit Cellar Newsletter subscriber? Great!
You’ll get your IoT Technology Focus newsletter issue tomorrow.

Not a Circuit Cellar Newsletter subscriber?
Don’t be left out! Sign up now:

Our weekly Circuit Cellar Newsletter will switch its theme each week, so look for these in upcoming weeks:

Embedded Boards.(9/25) The focus here is on both standard and non-standard embedded computer boards that ease prototyping efforts and let you smoothly scale up to production volumes.

Analog & Power. (10/2) This newsletter content zeros in on the latest developments in analog and power technologies including DC-DC converters, AD-DC converters, power supplies, op amps, batteries and more.

Microcontroller Watch (10/9) This newsletter keeps you up-to-date on latest microcontroller news. In this section, we examine the microcontrollers along with their associated tools and support products.