I need you to make a small project for me which consists of an LCD and STM32 microcontroller (an optional bluetooth) a matrix keypad and L9637D or similar chip
I will provide keypad schematics and also the lcd datasheet
Upon completion of the PCB you need to make a simple test program (menu controlled by keypad to show up in LCD to send some data on the L9637D chip trough uart)
The PCB will be running on battery and will also have a second power supply
If the second power supply is active then the battery should be disconnected since the battery voltage will not be similar to the supply voltage
The PCB should stay off when on battery and turned on by a button on the keypad and shut down after 1min its not beeing used
Please give a approximate price for this project upon bidding.