Racebox Micro

ESP32-S3 microcontroller along with a GM02SP module for NB-IoT, LTE-M and GPS protocols

 GPS and 5G connection are supported using the open-source ESP32 module.

The Walter is a future embedded device containing a GM02SP module for NB-IoT, LTE-M, GPS protocols, and an ESP32-S3 microprocessor. The board will also have CE and FCC certifications to hasten the creation of products for consumers.

ESP32-S3 microcontroller along with a GM02SP module for NB-IoT, LTE-M and GPS protocols

The ESP32-S3 was spotted in various devices last year, including the Banana Pi BPI-PicoW-S3, the Bee Motion S3, the T-SIMCAM, etc.)

32-bit Xtensa LX7 dual core (up to 240MHz); 2MB PSRAM (Quad SPI); 16MB Flash memory; ESP32-S3 (Quad SPI)

Up to 24 GPIOs are available on the Walter board, and it also has to debug test pins on the other side of the board, as illustrated below:

24 GPIOs are available on the Walter board

The datasheet states that AT instructions are used to communicate across the UART0 interface between the Sequans GM02SP module and the ESP32-S3 chip. In case users need to remove connected devices such as sensors or other external devices, it appears that the Walter board also incorporates a software-controllable MOSFET transistor to switch its peripheral power pin.

The developer firm provides a draught datasheet for documentation which is accessible here or on the product website. The business is still testing its libraries, which will handle NB-IoT, LTE-M, and GPS, according to a company spokeswoman.

Before their crowdsourcing effort begins, the pertinent libraries and extra documentation will be posted to a GitHub repository. Furthermore, it is stated on the sale page that "the schematics will be given under the GPLv3 license."

  • CPU: Xtensa Dual-core 32-bit LX7 CPU (ESP32-S3 SoC)
  • RAM: 2MB (Quad SPI) PSRAM
  • Flash: 16MB (Quad SPI) Flash memory
  • WiFi: 150Mbps(n) 802.11 WiFi b/g/n with on-board antenna
  • LTE: CAT M1/NB1/NB2 (GM02SP module)
  • GPS: GPS, GNSS Constellation support (GM02SP module)
  • Bluetooth: 2Mbps Bluetooth 5 (LE), Bluetooth Mesh
  • 24 physical GPIO pins

A QuickSpot official indicated that the Walter board's Kickstarter campaign will shortly begin. On its website, the business does, however, show the preliminary rates.

The price of the Walter module is €49.95. The module, an LTE antenna, and a GPS antenna are all included in the Connected bundle, which costs €69.95.

Similar to the Connected bundle, the Developer package also comes with a USB-C connector, a 100Mb prepaid SIM card, and up to 30 minutes of engineering help. The price of this package is €250. Visit the product page on QuickSpot.io for additional details.

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