Archive

Posts Tagged ‘lora’

Semtech Improves LoRa Efficiency and Range, Reduces Footprint with SX1261, SX1262, and SX1268 LoRa Chips

January 9th, 2018 No comments

LoRa is one of the most popular LPWAN technology deployed around the world with chips made by Semtech, as it allow long range, low power communication at low bitrate, and is especially useful for asset tracking, smart parking, and all sort of remote monitoring of persons (e.g. elderly fall for seniors) or assets (e.g. leak detection). Depending on your applications, i.e. data size and update frequency, a coin cell battery can last up to 10 years

The company has now introduced the second generation LoRa technology with three new RF chips that are 45% smaller, reduce power consumption by 50% (4.5 mA) , and extend range by 20%. The new chips also offers a high-power transmit option (+22 dBm), supports FSK modulation for migration to LoRaWAN from legacy protocols, and includes a new spreading factor for dense networks.

SX126x Block Diagram – Click to Enlarge

Full list of new features listed by the company:

  • 50% less power in receive mode
  • 20% more extended range
  • +22 dBm transmit power
  • A 45% reduction in size: 4mm by 4mm
  • Global continuous frequency coverage: 150-960MHz
  • Simplified user interface with implementation of commands (10 lines of code needed to transmit or received a packet)
  • New spreading factor of SF5 to support dense networks
  • Protocol compatible with existing deployed LoRaWAN networks

The three new devices – SX1261 (+15dBm), SX1262 (+22dBm), and SX1268 (+22dBm, China frequency bands) – are currently sampling to select customers and partners, and will be in full production later in March 2018. Development kits are also expected at that time.

Categories: Hardware Tags: ces 2018, IoT, lora, lpwan, semtech

AcSiP S76G/S78G SiPs Integrate LoRa, GPS, and MCU into a Single 1.3×1.1 cm Package

January 5th, 2018 4 comments

LoRa has been combined with GPS in several products such as Rakwireless RAK811 LoRa tracker board, or Dragino LoRa/GPS HAT board among others, with all designed for far based on a LoRa module, plus a GPS module.

LoRa GPS tracker will soon even smaller as AcSiP has developed S76G and S78G systems-in-package (SiP) that combine LoRa, GPS and an MCU into a single 1.1 x 1.3cm package.


The two new modules are not listed on the company’s IoT-LoRa products page yet, but they appear to be an evolution of their S76S / S78S LoRa + MCU SiP released in 2016, so the new modules should have the following features:

  • MCU – STMicro STM32L073x Arm Cortex M0+ MCU with up to 192 KB of Flash memory and 20 KB of RAM
  • LoRa
    • AcSiP S76G – Semtech SX1276 supporting global 868 MHz or 915 MHz ISM-Bands.
    • AcSiP S78G – Semtech SX1278 supporting global 433 MHz or 470 MHz ISM-Bands
  • GPS
  • I/Os – I2C/SPI/UART/GPIO
  • Package – 1.3 x 1.1 cm

The company will offers a complete SDK / HDK suite with latter likely similar to EK-S78S board pictured below but with an extra GPS antenna or connector.

AcSiP S78S LoRa Development Kit

AcSiP S76G / 78G SiP are expecting to be found in wearables, children and pets tracking and other applications. Availability and pricing has not been disclosed, but for reference their previous generation S76S and S78S chips are sold for respectively $20 and $18 (sample price for online purchase).

Via China Times

Categories: Hardware, STMicro STM32 Tags: acsip, gps, IoT, lora, lpwan, sip, stm32

Year 2017 in Review, Top 10 Posts, and Some Fun Stats

December 31st, 2017 20 comments

2017 is coming to an end, and as I do every year, I’ll take a look back at the year that was on CNX Software. The pace of development boards launches has not slowed down this year, and we get an even wider range from the low-end with Orange Pi or NanoPi boards, to much more powerful ARM boards, and some new entrants like Libre Computer. The same is true for TV boxes, most of which now support 4K HDR, ranging from ultra cheap models selling for less than $20 to higher end Android TV boxes, while mini PCs were dominated by Intel Apollo Lake models, although some Cherry Trail products were also launched.

Processor-wise, Amlogic launched more Amlogic S905X derivatives with S905W/S905D/S905Z, which are popular in the TV box market. Rockchip’s most interesting processor this year was RK3328 quad core Cortex A53 processor designed for 4K HDR Android TV boxes, but also popular with single board computers thanks to Gigabit Ethernet and USB 3.0 interfaces that provide good I/O performance. Allwinner H2+/H3/H5 were launched last year, but they kept being used in cheap development boards, retro game consoles, etc.. The company also launched A63 SoC for 2K tablets, and H6 for 4K OTT TV boxes, and we can expect the latter not only to be found in TV boxes such as Zidoo H6 Pro, but in more Orange Pi H6 boards, and likely other products in 2018 since beside media capabilities, the processor also supports Gigabit Ethernet, USB 3.0, and PCIe. Intel’s Celeron and Pentium Apollo Lake processors dominated the entry-level Windows mini PCs market this year, and Linux was much better supported than in Bay Trail / Cherry Trail processors, but few manufacturers decided to offer Apollo Lake mini PC pre-installed with Ubuntu or other Linux distributions.

2017 was also an interesting year for the Internet of Things (IoT) with Espressif ESP32 going into full gear, and prices dropping to $5 for maker boards. Other WiFi IoT solutions that looked promising last year such as RTL8710AF, did not really took off in a big way. LPWAN (Low Power Wide Area Network) solutions got even more traction with LoRa dominating, but far from being alone with Sigfox, and the emergence of 3GPP standards like NB-IoT and eMTC.

While I had written articles about 3D printing in the past, it really became a proper category on the blog this year, thanks to Karl’s reviews, and 3D printers provided by GearBest. I’d also like to thank Ian Morrison (Linuxium), TLS, Blu, Nanik who helped with reviews and/or articles this year.

Top 10 Posts Written in 2017

I’ve again compiled a list of the most popular posts of 2017 using the pageviews from Google Analytics, but for a change, I’ll show the results in reverse order:

  1. Google Assistant SDK Turns Your Raspberry Pi 3 into Google Home (May 2017) – Voice assistants like Amazon Alexa or Google Assistant went beyond the companies’own products, and Google Assistant SDK release allowed developers to make their own DIY smart speaker based on Raspberry Pi 3 board, or other ARM Linux boards. I could successfully implement my own using an Orange Pi Zero kit.
  2. Mecool BB2 Pro Review – TV Box with DDR4 Memory – Part 2: Android Firmware, Benchmarks, Kodi (January 2017) – Mecool BB2 Pro was one of the first Amlogic S912 octa-core TV boxes with DDR4 memory, but my tests did not show any benefits over DDR3 memory.
  3. Mecool KI PRO Hybrid Android TV Box with Amlogic S905D SoC, DVB-T2 & DVB-S2 Tuners Sells for $80 (May 2017) – For some reasons, post about VideoStrong/Mecool Android set-top boxes are quite popular on CNX Software, and KI PRO was the first model based on Amlogic S905D processor with support for multiple demodulators.
  4. Orange Pi 2G-IoT ARM Linux Development Board with 2G/GSM Support is Up for Sale for $9.90 (March 2017) – “Cellular IoT Linux board for $10? Where’s the buy button?” might have been the first reaction to many people. But when buyers received their board, it was a struggle and may still be, since it was based on a  RDA Micro processor for phones poorly supported in Linux.
  5. Installing Ubuntu 17.04 on CHUWI LapBook 14.1 Apollo Lake Laptop (February 2017) – People want their cheap and usable Ubuntu laptop, and if manufacturers won’t make one for them, they’ll find ways to make their own. Sadly, CHUWI massively changed the hardware, and it’s not such a good solution anymore.
  6. ASUS Tinker Board is a Raspberry Pi 3 Alternative based on Rockchip RK3288 Processor (January 2017) – A large company like ASUS entering the maker board market, and the solution inspired from Raspberry Pi 3, but more much powerful. That got people interested!
  7. Creality CR-10 3D Printer Review – Part 2: Tips & Tricks, Octoprint, and Craftware (May 2017) – It was the year of cheap $100 to $200 3D printer, but CNX Software visitors were more interested in a better model, and Creality CR-10 review was the most popular 3D Printer review/post this year.
  8. Mecool KIII Pro Hybrid STB Review – Part 2: Android Firmware, TV Center, and DVB-T2 & DVB-S2 App (March 2017) – VideoStrong sells some inexpensive Android TV boxes with tuner under their Mecool, and KIII Pro was their first octa-core model with both DVB-T/T2 and DVB-S2 tuners.
  9. ASUS Tinker Board’s Debian & Kodi Linux Images, Schematics and Documentation (January 2017) – ASUS board was somehow started selling before the company intended to, and while firmware & documentation were there, they were hard to find, so people looked for that information, and found it on CNX Software.
  10. MINIX NEO U9-H Media Hub Review – Part 2: Android 6.0 Firmware & Kodi 17 (March 2017) – Apparently, I’m not the only to consider MINIX NEO U9-H to be one of the best Android TV boxes, as my review of the media hub was the most read post of 2017.

Stats

981 posts were published in 2017. Let’s go straight to users’ country and city location data.

The top five countries have not changes, but this year Germany overtook the United Kingdom in second position. Traffic from India increased on a relative basis, and Australia made it to the top ten at the cost of Russia. London and Paris kept the two top steps, but Bangkok rose to third position, while last year third, Tel aviv-Yafo went away completely from the list. New York is gone being replaced by Warsaw in 8th position.

The list of the most used operating systems, and browsers is fairly stable, but the trends noticed in past years continues, with Windows share of traffic going down, Android going up, and Linux stable, while Chrome dominated even more, with most other browsers going down in percentage basis, except Edge that is very slowly replacing Internet Explorer, and Samsung Internet that replaced Opera mini in the list.

Desktop traffic still rules, but mobile + tablet traffic now accounts for around a third of the traffic.

Finally, I went to dig into pagespeed data with pages loading in 15.58 seconds on average. I then filtered the countries with more than 5,000 pageviews, and CNX Software pages and posts loaded fastest in Portugal, Denmark, and Macedonia. However, people in Venezuela need to wait close to 2 minutes for a page to load on average, and in China and Iran around one minute.

Next year looks promising, and I expect to test Gemini Lake mini PC, and maybe some ARM based mini PCs or laptops, but I’ll review less TV boxes as due to some new regulations I can’t easily import them. The regulatory framework is now in place for LPWAN standards, and I should be able to start playing with LoRa and NB-IoT in 2018, using local services, or my own gateway(s). I’ll keep playing with development boards, as I’m expecting interesting Allwinner H6, Realtek RTD129x, Hilsicon, and other platforms in the year ahead, as well as various IoT products.

I’d like to come together with some of the devices and boards reviewed in 2017 (and a Linux tux) to wish you all a prosperous, healthy, and happy new year 2018!

Click to Enlarge

LoRaWAN Currently Leads LPWAN IoT Gateway Deployments Says VDC Research

December 15th, 2017 No comments

LoRaWAN, Sigfox, Weightless, RPMA, NB-IoT, etc… There are many LPWAN (Low Power Wide Area Networks) solutions, but it’s unclear whether most/all will survive and coexist, or there will eventually be a couple of winners used by everyone.

VDC Research is claiming that so far, LoRaWan assumes LPWAN leadership for IoT gateways, explaining that “LoRaWAN (LoRa) has generated considerable traction with new product launches from a number of gateway suppliers through the past 18 months”, but points to mounting competition from 3GPP standards such as NB-IoT and LTE Cat M1.

LPWAN Max Bitrate and Distance Range

Sadly, the company did not provides number in their public announcement, and those are only available in the paid report. VDC Research still released a public executive brief (free registration required), with some of the highlights including:

  • The global market for IoT gateway hardware is forecasted to grow to more than $2.5B in 2021.
  • While intelligent gateways generated more market revenue than M2M gateways in 2016, they will not comprise the majority of unit shipments until 2019.
  • Shipments of IoT gateway devices supporting LPWANs is set to explode with a 2016-2021 CAGR in excess of 100%.
  • The fastest growing Linux distributions for IoT gateways include OpenWRT, Ubuntu, and Wind River Linux.
  • Arm and x86 will extend their majority share among embedded CPU architectures in gateway hardware.
  • Nearly half of IoT gateway revenue will be generated in the Americas in 2021.
  • Two-thirds of current IoT gateway projects from VDC’s annual embedded engineer survey are connecting to sensors deployed in the field; sensor networks are driving gateway deployments.

RAK Wireless Introduces LoRa + BLE Module, LoRa GPS Tracker, and NB-IoT/eMTC Arduino Shield

December 9th, 2017 1 comment

We’ve previously covered several products from RAK Wireless, including RAK WisCam Arduino compatible Linux camera, RAK CREATOR Pro Ameba RTL8711AM WiFi IoT board, and WisCore modular development kit for application leveraging voice assistants such as Amazon Alexa.

AFAIK, the company had not released any new products since their RAK831 LoRa gateway module launched last summer, but they just contact me with the release of three new wireless products, namely RAK813 BLE + LoRa module, RAK811 LoRa tracker board, and WisLTE NB-IoT/eMTC/eGPRS Arduino shield.

RAK813 BLE + LoRa module & Development Board

Main features and specifications:

  • Connectivity
    • LoraWAN via Semtech SX127x (LoRa) chipset
      • Frequency Ranges
        • 433MHz, 470MHz
        • FCC Frequency range 902~928MHz
        • CE Frequency range 863~870MHz
        • MIC Frequency range 920~928MHz
        • KCC Frequency range 920~923MHz
      • Receiver Sensitivity: LoRa down to -146 dBm
      • TX Power – adjustable up to +14 dBm, max PA boost up to 20dbm
      • Range – Up to 15 km in rural area, up to 5 km in urban area
      • u.FL antenna connector
    • Bluetooth 5 via Nordic Semi nRF52832 SoC, u.FL antenna connector
  • 33 castellated holes with up to 13x GPIO, 1x UART, 1x I2C, 1x SPI, 3x ADC, SWD, GND, VDD (LoRa/BLE), and antenna pins
  • Power – 3.3V DC input; consumption down to 2uA in sleep mode
  • Dimensions – 27.20 x 23 x 1.7 mm

Bear in mind that while nRF52832 SoC support Bluetooth 5, it does not support long range mode. The module is expected to be used  for environment monitoring, parking systems, smart cities, asset / personnel positioning, smoke alarms, industrial monitoring and control, and other remote battery powered applications.

In order to get you started before you design your own baseboard, the company also provide WisLoRaB-RAK813 Arduino compatible board with external antenna connectors, micro USB port for power programming, and a reset button. Documentation now is limited as we can only download the hardware datasheets for the module and board.

The module is sold for $14.90 on Aliexpress, with only 868MHz and 915 MHz models available right now, and the development board goes for $19.90 plus shipping, again with the same frequency range models.

RAK811 LoRa Tracker Board

Specifications:

  • Connectivity – LoRaWAN Version V1.0.2 via RAK811 module based on STM32L151 MCU and Semtech SX1276 LoRa chip; SMA connector for antenna
  • Location – GPS/GLONASS via Ublox MAX-7Q GPS Module, u.FL antenna connector
  • Expansion – 2x 10-pin with I2C, GPIOs, SWD, GND, VCC (3.3V)
  • USB – 1x micro USB port for charging and debugging
  • Battery – Optional 2200mAh rechargeable battery good for 2 years (depending on use)
  • Dimensions – 54mm x 22mm x17mm with antenna connector
  • Temperature Range – -20°C ~ 60°C

There’s also a RAK811 SensorNodeBoard with the same features minus GPS.

Documentation looks pretty good here, as beside the datasheet, we can download the user manual, schematics, etc.., and source can be found in Github with CoIDE  or Keil5 tools supported..

RAK811 TrackerBoard is sold with LoRa and GPS antennas, a micro USB port, some jumper cables, jumpers, and battery for $29.99 plus shipping on Aliexpress with two models for 868 MHz or 915 MHz bands.

WisLTE NB-IoT/eMTC/eGPRS Arduino Shield

Specifications:

  • Wireless Module – Quectel BG96 with Cat.M1 (eMTC) / Cat LTE NB1 (NB-IoT) & EGPRS connectivity, GNSS support (GPS)
  • Antennas – 2x u.FL antenna connector for LTE and GNSS
  • SIM card slot on back of the board
  • Expansion
    • Arduino UNO compatible headers with UART, 1x I2C, 2x ADC, etc…
    • UART switch pin (blue header)
  • USB – micro USB port for power and debugging, 1x USB host port
  • Misc – Reset and power buttons, USB boot jumper, serial voltage selection (3.3V or 5V)

I had heard about BC95 NB-IoT module before, but I think it may be the first time I come across BG96 module, and beside adding EGPRS and Cat M1, is also adds GPS positioning, a USB interface, I2C, one extra UART interface, and one extra ADC interface. NB-IoT uplink and download data rate are also a little higher than in BC95.

The company provides a getting started guide while connected to a PC, and BG96 AT command sets documentation on their website, but AFAICT there’s no code in their Github account, like Arduino libraries to easily use the shield. I did find another user, probably a beta tester, that wrote an Android Things driver for WisLTE.

Click to Enlarge

If you are interested in the board, WisLTE is sold for $39.90 plus shipping on Aliexpress.

MatchBox LoRaWan Gateway Review – Part 1: Unboxing and Teardown

November 30th, 2017 14 comments

Last spring, I wrote about MatchX.io MatchBox LoRaWAN gateway with GPS, WiFi, and Ethernet connectivity. The gateway is equipped based on a Mediatek WiFi module running Linux (OpenWrt/LEDE), Semtech chips for the LoRa part, and support up to 65,535 nodes, such as the as well as MatchStick, MatchModule, and MatchCore sensors provided by the company.

I’ve just received MatchBox gateway for review, but I’m still waiting for 920-925MHz LoRa nodes as they are going through the FCC certification process, and I also have to wait for clarifications regarding local regulations. So in the meantime, I’ll check out the gateway hardware.

MatchBox LoRaWAN Gateway Unboxing

The gateway is shipped with a power supply, power cord, two antennas, an installation guide,…

Click to Enlarge

as well as three screws and pegs to wall mount the gateway and power supply, and in case you want to install the gateway on a pole, as shown below, for greater range (up to 20km LOS), a clamping collar is also provided.

The power supply has 100-240V 50/60Hz input, and 24V DC / 0.5 output. It includes on two Ethernet ports, the “PoE” port to connect to the gateway, and the LAN port which you can connect to your broadband or 3/4G router.

One hand of the router includes two antenna connects for GPS and LoRa.

Click to Enlarge

On the picture above above we can see the model (MX1702) has FCC certification, and since the company is based in Berlin (hence the photo with the television tower above), CE certification has also been passed, but another model number (MX1701) is used due to the different frequencies.

Click to Enlarge

The other end of the gateway has a cover revealing the PoE port, a USB 2.0 port for storage, a USB type C port for debugging, and a Link LED. Installation is easy, as you just to plug a standard Ethernet cable – although a shielded one is recommended – into the PoE ports of the gateway and the power supply.

Click to Enlarge

Put back the cover to protect the ports of the gateway from elements and insects. You could also use another Ethernet cable to connect the gateway to your router, but using WiFi is also possible.

MatchBox Gateway Teardown

At this stage, I normally open the device to check out the hardware design, but an enclosed letter asked me not to because the enclosure of rated IP65 and ultrasonic welded to it may not be waterproof anymore after I reassemble it.

The letter also explain how to register the gateway with its serial number at https://matchx.io/cloud using the cloud services in Europe,  North America, Oceania, Korea, Japan/SEA (South East Asia), or India, so the service is basically available worldwide, provided your country allows it.

So instead of tearing it down myself, I asked the company to send some high resolution photos of the board.

Click to Enlarge

A Hi-Link HLK-7688A module is used on the board for WiFi with two u.FL antenna connectors (ANT4 and ANT3), and a PCB antenna. That module should be based on Mediatek MT7688A MIPS processor, but MatchX reports the processor is actually MT7628A. Both SoCs are very similar, but the latter supports 2×2 MIMO.

LoRa functionality is implemented with four Semtech chips:

  • SX1301 Base Band Processor for Data Concentrator for Long Range Communication Network
  • 2x SX1257 RF I/Q Multi-PHY Mode Transceiver 860-1000MHz
  • SX1272 long range, low power RF Transceiver 860-1000MHz with LoRa Technology

LoRa circuitry is then connected to ANT2 u.FL connector.

Click to Enlarge

On the other side of the board, the most notable part is Ublox MAX-7Q GNSS module supporting GPS/QZSS, GLONASS, and connected to ANT1 antenna connector.

You’ll find more details on Matchx.io website, and on MatchBox User Guide which provide more technical details, and explains how to get started. I’ll try that next time around.

PingPong IoT Development Board Supports Cellular Connectivity, WiFi, Bluetooth, LoRa, Sigfox, and More

October 19th, 2017 No comments

Round Solutions, a supplier of products, services and concepts for industrial M2M and IoT markets, has introduced PingPong IoT development board with either Microchip PIC32MZ running an RTOS, or PIC32MZ DA running Linux, and equipped with a Telit modules for either 2G or 3G cellular + GNSS connectivity.

The board can also support WiFi, Bluetooth, ISM/RF, NFC/RFID, LoRa, Sigfox, Iridium satellite, and serial interface thanks to a range of expansion boards.

PingPong IoT board specifications:

  • MCU / Flash
    • RTOS version – Microchip PIC32MZ 32-bit Microcontroller @ 200 MHz, with 512 KB RAM and 2 MB Flash Memory + 4 MB external memory
    • Linux version – Microchip PIC32MZ DA  (Full specs TBA)
  • Connectivity
    • Cellular connectivity
      • Telit xE910 module with 2G, 3G and/or 4G LTE (coming soon)
      • Data
        • GSM/GPRS – Uplink/Downlink: 9.6 kbps
        • UMTS – Downlink: 384 kbps, Uplink: 384 kbps
        • HSPA+ – Downlink: 42.0 Mbps, Uplink: 5.75 Mbps
        • LTE – Download: 100 Mbps, Uplink: 50 Mbps
      • Frequency Bands (MHz) – 1800, 1900, 2100, 850, 900
      • 2x SIM card slots, SIM on chip
      • u.FL antenna connector
    • GNSS
      • Telit SL869 module for GPS, Glonass, and Galileo E1
      • u.FL antenna connector for GPS
    • 10/100M Ethernet (RJ45)
    • Connectivity stackable expansion boards for
      • Wi-Fi/Bluetooth: with webserver on board
      • Satellite communication: Iridium
      • ISM/RF:433MHz/868MHz/915MHz/2.4GHz
      • NFC/RFID: Protocol EPCglobal Gen 2 (ISO 18000-6C)
      • Sigfox/LoRa: Ultra low power transmitter
  • Other stackable expansion boards:
    • I/O & Serial Board: 10 digital/10 analog/4 frequencies, RS485, RS232
    • Still image and video camera
  • USB – 1x micro USB port
  • I/Os
    • 2x connectors for stackable extension boards with UART, SPI, CAN, I²C
    • 1x CAN interface, 2x analog inputs, 4x 3-state logic inputs, 4x NMOSFET outputs, 1-wire interface
    • 2x current measurement inputs (24-bit resolution)
  • Sensors – Magnetometer, accelerometer
  • Power Supply – 9 to 60V DC
  • Dimensions – 85 x 52 x 23 mm
  • Temperature Range – -40 C to +85 C (industrial grade)
  • Certification CE

 

The RTOS version uses C/C++ and Python and comes with a USB CDC bootloader, while the Linux version is more versatile with support for Open VPN, IPSEC tunnels for example for IoT gateway / router functionality. The source code is available for both operating system, and the company can also provide ready-made software packages for remote metering, asset tracking, Wi-Fi/Bluetooth gateway, MODbus over TCP, or MODbus RS485.

The board is also compatible with MPLAB Harmony, and can connect to Cumulocity IoT Cloud Platform or Telit m2mAIR Cloud out of the box.

The Linux & 4G versions of the board still appear to be in development, but PingPong IoT 3G/RTOS board is available now, starting at 197 Euros with the board only, and up to 445 Euros with the WiFi/Bluetooth, and RF/ISM add-on boards.

Gumstix Expands Raspberry Pi Support with Stepper Motor, Breakout Board, LoRa PoE, and Yocto Linux

October 14th, 2017 3 comments

Gumstix has recently released of three new expansion boards compatible with Raspberry Pi boards and Compute Modules:

  • Gumstix Pi Stepper HAT for 4-wire stepper motors
  • Gumstix Pi Newgate breakout boards exposing all I/Os of Raspberry Pi Compute Module and Compute Module 3
  • Gumstix Pi Conduit PoE adding PoE support to their LoRa gateway kit based on RisingHF RHF0M301 LoRa concentrator module.

The company also offers a custom Yocto 2.2 (Morty) Linux images with support for their Pi HATs and Compute Module carrier boards.

Gumstix Pi Stepper HAT

The expansion board is designed with the 40-pin header for Raspberry Pi products, and includes Texas Instruments DRV8846, a 4 – 18V, 1.4A stepper motor driver with 1/32 microstepping providing rotational accuracy below a tenth of a degree, and 6,400 distinct positions. The board supports 6 to 36V batteries via a 3-pin headers, includes 256 kbit serial EEPROM, and can be used for printers, scanners, video security cameras, projectors, and other automated equipment.

You’ll find technical documentation and software on the product page, where you can also purchase the board for $35.

Gumstix Pi Newgate

Click to Enlarge

The Gumstix Pi Newgate is a breakout board for RPi Compute Module and Compute Module 3 that exposes all I/Os of their 200-pin SO-DIMM connector via 2.54mm pitch headers with 3 terminals for each pin. The board is also equipped with a micro USB console port, and level shifters to accommodate 3.3 and 1.8 volt logic levels for peripheral devices.

The breakout board goes for $85 on Gumstix website.

Gumstix Pi Conduit PoE

Pi Conduit PoE is an update of their earlier board with added Gigabit Ethernet and PoE support, and removal of cellular support:

  • 200-pin SO-DIMM connector for Raspberry Pi Compute Module / Raspberry Pi 3 Compute Module (CM3 / CM3L)
  • Headers for RisingRF RHF0M301 LoRa gateway/concentrator module
  • NimbeLink Skywire 2G/3G/4G cellular modem connector
  • Gigabit Ethernet jack with PoE support implemented via ASIX AX88179 SuperSpeed USB 3.0 to Gigabit Ethernet Controller
  • USB – 1x micro USB port for debugging via an FTDI USB to TTL chip
  • Misc – User (GPIO5) and reset buttons
  • Power Supply – 5V via power barrel

If you’re using any of the Raspberry Pi modules, you’ll however be limited to the USB 2.0 interface (480 Mbps) for Gigabit Ethernet, but that’s still an improvement of the 10/100M Ethernet often used with the modules.

The board sells for $150, excluding RisinRF and RPi CM(3) modules.

Yocto Linux and Hardware Customization

Gumstix does not rely on Raspbian anymore, as the company provides custom Yocto Linux disk images (Morty) with support for Gumstix Pi HATs, Compute Module carrier boards, relevant drivers, and systemd services. The company also offers a “Smart repository” with a variety of packages for easier installation. For all the three products listed above you’ll find two Yocto images, one with XFCE environment, one headless with access to the command line.

All three boards have also been designed with Geppeto, the company’s web platform for hardware design, and can be customized to your needs and ordered right in your web browser.