WeAct MSPM0G3507 is a BluePill-like development board equipped with Texas Instruments’ 80 MHz MSPM0G3507SRHBR Arm Cortex-M0+ mixed-signal MCU with 128KB flash and 32KB SRAM.
The board features a USB-C port for power and programming, two buttons for Reset and BSL (Bootstrap Loader), a 4-pin SWD port for debugging, and two 18-pin headers for GPIOs, CAN Bus, ADC, DAC, I2C, UART, and other interfaces. The MSPM0G350x microcontroller also comes with a math accelerator for DIV, SQRT, MAC, and TRIG computations which could prove useful for control control and signal processing.
WeAct MSPM0G3507 specifications:
- MCU – Texas Instruments MSPM0G3507 Arm Cortex-M0+ microcontroller at 80 MHz with 128KB flash, 32KB SRAM, 2x 4Msps ADC, DAC, 3x COMP, 2x OPA, CAN FD, MATHACL math accelerator
- USB – USB-C port for power and programming via CH340X USB to TTL chip
- Expansion – 2x 18-pin with power signals, I2C, SPI, GPIOs, ADC inputs, DAC, CAN Bus, etc…
- Debugging – 4-pin SWD connector
- Misc
- NRST and BSL/A18 buttons
- Blue user LED
- Power Supply – 5V via USB-C port; ME6231A33M3G 5V to 3.3V LDO
- Dimensions – 46.2 x 18.3 mm
WeAct Studio is well-known for making ultra-cheap boards with limited documentation. The WeAct MSPM0G3507 development board got the same treatment with the documentation hosted on GitHub only consisting of the PDF schematics, the MCU datasheet in English and Chinese, and a blink sample program. So most people will probably refer to the MSPM0G3507 LaunchPad development kit’s product page for software resources and documentation, or jump directly to the MSPM0 SDK documentation for getting started instructions and more code samples.
The MSPM0L and MSPM0G were introduced in 2023 as low-cost microcontrollers selling for as low as 39 cents in quantities and the aforementioned LaunchPad board goes for $16.99. But WeAct Studio’s board is much simpler and cheaper going for just $2.28 plus shipping on AliExpress.
Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.
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Isso amazing how cheap they can go.
We at Linuniz are currently adding Zephyr RTOS support for both G and L series, which will be mainlined soon. Work in progress tree is here: https://github.com/linumiz/zephyr/tree/dev/ti/mspm0