solarcaratuva/powersystem

UVA Solar Car Power System PCB design and ECU code

PowerSystem

Developing PCB for Power System and ECU code for STM32F413ZH.

PCB Design

TODO:

1. Remove double throw 12V power relay off PCB (as it is chasis mount)
2. Add charge and discharge relays to PCB
3. Figure out which pins on the STM to use for what
4. Add extra CAN port (need one for Rx from BMS, and one for Tx and Rx to other PCBs) as well as the external CAN Tranceivers
5. Make sure everything has footprint and 3d model
6. Pick out exact voltage regulator models
7. Layout board

STM 32 & ECU Code

TODO:

1. Figure out which pins on the STM to use for what
2. Figure out what each power supply input (VDD, VSS, VBAT, VDDUSB, VDDA, VSSA) and other important inputs are for

Pin Names used by MbedOS: https://os.mbed.com/platforms/ST-Nucleo-F413ZH/

Important pins for us:

STM Pin Name	MbedOS Pin Name(s)	Function
PB0	PB_0/LED1	BMS Error
PB7	PB_7/LED2	CAN Error
PB14	PB_14/LED3	Unused LED
PC13	PC_13/BUTTON1	Unused Button
PD0	PD_0	CAN1 (BMS) Receivier
PD1	PD_1	CAN1 (BMS) Transmitter
PB12	PB_12	CAN2 (Main) Receivier
PB13	PB_13	CAN2 (Main) Transmitter
PG9	PG_9/D0	DC-DC ON
PG14	PG_14/D1	Unused Digital I/O
PF15	PF_15/D2	Unused Digital I/O
PE13	PE_13/D3	Unused Digital I/O
PF14	PF_14/D4	Unused Digital I/O
PE11	PE_11/D5	Unused Digital I/O
PE9	PE_9/D6	Unused Digital I/O
PF13	PF_13/D7	Unused Digital I/O
PF12	PF_12/D8	Unused Digital I/O
PD15	PD_15/D9	Unused Digital I/O
PD14	PD_14/D10	Unused Digital I/O
PA7	PA_7/D11	Unused Digital I/O
PA6	PA_6/D12	Unused Digital I/O
PA5	PA_5/D13	Unused Digital I/O
PB9	PB_9/D14	Unused Digital I/O
PB8	PB_8/D15	Unused Digital I/O
PA3	PA_3/A0	AUX Voltage
PC0	PC_0/A1	DC-DC Voltage
PC3	PC_3/A2	Unused Analog I/O
PC1	PC_1/A3	Unused Analog I/O
PC4	PC_4/A4	Unused Analog I/O
PC5	PC_5/A5	Unused Analog I/O

Note: the LEDs for Power ON, AUX ON, DC-DC ON, and AUX/DC-DC being used can be directly connected to the power supply / relay driving it.