Category: 32 x IO/Servo Hat

16xServo Hat

This is rev 1.3 of 32xIO/Servo Hat. It’s been a few revisions that I never bothered to build because the original is working well. But, I need some changes on this: SWD need to change to new format. Connection to SPI1 need resistors. 2nd Power connector needs to be added. Connection between motor and 5V…

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Modular Control System

This drawing is an overview of the Hat’s in progress. A few is only on the planning stage, but most electronics is on prototype level and SW is coming on. Raspberry PI is the obvious core if I need heavier processing. Due to the nature of it’s SPI I can only connect one of these…

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BasicPI Firmware Stack

This illustrates the BasicPI Firmware Stack in progress. What I always do in embedded applications is to make a “standard” main.cpp as follows: void AppInit() {    // wire hardware } int main() {    AppInit();    // start OS } A team I worked in years ago agreed on this standard so we should…

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32 x IO Hat

This is the last version of the 32 x IO Hat. I just modified it to use the faster SPI towards RPI bus. The Power connector on the right side is for Servo’s. It enables a different voltage than 3.3V supplied from a separate PSU Hat. The jumper need to be set for 3.3V to…

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