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Linux Devices and Open Hardware/Modding

Submitted by Roy Schestowitz on Monday 4th of October 2021 11:14:26 PM Filed under
Linux
Hardware
  • Build a LoRaWAN weighing scale with TTGO T-Weigh ESP32 board, HX711 module - CNX Software

    Ever wanted to build your own LoRaWAN connected weighing scale? Me neither, but apparently those types of products already exist for logistics and inventory management, and LilyGO’s latest ESP32 board – the TTGO T-Weigh – is designed for this exact purpose with a Semtech SX1272 based LoRa module, and a HX711 24-bit ADC chip.

    The board can handle up to four scales that transfer weight data over WiFi, Bluetooth or LoRaWAN, and should be useful in applications that require weighting goods or products where there are limited connectivity options including logistics, farming.

  • UDOO KEY ESP32 & RP2040 board launched for $4 (Crowdfunding) - CNX Software

    UDOO is known for its x86 boards that embed an Arduino compatible MCU, but the UDOO KEY is different, as it does without an Intel or AMD processor, and instead, combines Raspberry Pi RP2040 microcontroller with Espressif ESP32 WiFi & Bluetooth WiSoC.

    As we noted in the past combining Raspberry Pi Pico/RP2040 with ESP32 does not make a lot of sense in most cases, but here’s the UDOO KEY will be offered for just $4 for the first 1,000 units, so they’ll basically throw the ESP32 for free since it’s the same price as one Raspberry Pi Pico, before eventually selling the device for $20.

  • The Arduino Store has been upgraded | Arduino Blog

    You might have noticed that the shopping experience on the Arduino Store has changed a little. We wanted to let you know what we’ve been working on to supercharge the store.

  • Telepresence Robot For “Doing The Rounds” | Hackaday

    The main controller is a Raspberry Pi 4 running ROS2 (Robot Operating System), which takes inputs from a 360 LIDAR sensor, high-quality camera module, and IMU.

  • Using Arduinos To Drive Undocumented Displays | Hackaday

    For those of us old enough to remember the VCR (and the difficulty of programming one), the ubiquitous vacuum fluorescent display, or VFD, is burned into our memories, mostly because of their brightness and contrast when compared to the superficially-similar LCD. These displays are incredibly common even apart from VCRs, though, and it’s easy to find them for next to no cost, but figuring out how to drive one if you just pulled it out of a 30-year-old VCR is going to take some effort. In this build, [mircemk] shows us how he drives unknown VFD displays using an Arduino in order to build his own weather forecasting station.

    For this demonstration [mircemk] decided to turn a VFD into a weather forecasting station. First of all, though, he had to get the VFD up and running. For this unit, which came from a point-of-sale (POS) terminal, simply connecting power to the device turned on a demo mode for the display which let him know some information about it. From there, and with the knowledge that most POS terminals use RS232 to communicate, he was able to zero in on the Rx and Tx pins on the on-board microcontroller and interface them with an Arduino. From there it’s a short step to being able to output whatever he wanted to this display.

  • DacBerry 400 S : un DAC audio pour Raspberry Pi 400
  • Lilbits: AYA Neo, YouTube Music, and a keyboard with 3 keys [Ed: In English]

    The DacBerry 400 S is a small, inexpensive DAC (digital to analog converter for audio) designed for the Raspberry Pi 400 computer-in-a-keyboard. It attaches to the 40-pin connector to give you 96 KHz/32-bit audio and sells for about €20 ($23).

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