Pulsar #4

Hello!

I finished soldering the CLU and E22E28 radio modules. Wired up all the essentials and printed a temporary structure that can hold the CLU and PSU together. I will soon add support for the E22E28 module.

This is the CLU seen from above. In the center the mighty STM32H733VGT6, in the left bottom corner the bluetooth low energy module, next to it the CR1220 battery holder that allows the RTC to stay powered and keep the time and a small configuration switch, the debugging serial wire connector on the left. There are 4 LEDs, one is connected directly to the BLE module, the other 3 are connected to the uC. In the very bottom you can spot the SD card that is connected underneath the CLU, this can be used to save logs and perhaps to save offline maps for the GNSS.

Testing of the CLU went well, the uC powers on, connects to the programming probe and operates all the GPIOs. I will test more features in the coming weeks as I start to develop the firmware for the CLU.

Soldering the CLU is still doable by hand but i might suggest using a heated platform soldering station (a very hot slab of aluminium) or a hot air soldering station for the microcontroller.

I'll follow up in the next days with updates on the radio module's tests.