This is a very overengineered desktop power supply. Small feature list :
- Powered by Lidl or Aldi battery back
- Current limiting (not very good)
- Large display (320x240)
- Large fonts
The software comes in two flavors :
- C++
- Rust
You can switch to either one (un)commenting the SET(ENABLE_RUST True) in the top CmakeLists.txt
NB: The rust version contains bit of c++ (the lnArduino low level driver + the ina219 driver)
You can use pretty much any DC/DC converter as a core, you need to adjust R2 depending on the feedback voltage (see lnPowerSupply.pdf) Be careful to stay below ~ 24v else the INA219 will blow.
Formula is ~ R2>420*FB
- FB=1.25=> R2>500
- FB=0.8=> R2>360...
The overal design is made of 3 parts :
- The DC/DC converter board itself
- The DC/DC control board, controlled over i2C
- The main board with a STM32 or GD32 driving the screen
You need to have the control part close to the DC/DC You need to have the SPI screen AWAY from the control board
