Digital dashboard 2

Designed for my electric car conversion so not stand-alone and requires the other modules to get the car to work as you know BMW computers do not work very well when you disconnect the ECU and security.

With fixes and enhancements from previous version

Serial changed to CAN bus
LCD Footprint fixed
Better Switch mode supply
number of multiplexed segments halved to 16 from 32 (still too many but works ok)

Looks to be OK, built and tested and all LEDs work. Base pic33k test code attached which will light all LEDs using a 100uS multiplexing interrupt, but no code for the LCD or CAN yet so this part is still untested and I need to get the other boards working before I go there...

Design Drawing

schematic diagram

Preview

E39EV Digital Dashboard SchematicOpen in Editor

PCB

Preview

E39EV Digital Dashboard PCBOpen in Editor

BOM

ID	Name	Designator	Footprint	Quantity
1	1u	C18,C6,C13,C16,C17,C19,C20	1206	7
2	S2-OUT-BLACK (X16)	U1	IDC18-E39-PCB	1
3	S3-OUT-WHITE (X10113)	U13	IDC18-E39-PCB	1
4	S4-OUT-BLUE (X10114)	U7	IDC26-E39-PCB	1
5	2N7002	Q43,Q8,Q9,Q10,Q11,Q12,Q13,Q14,Q15,Q16,Q17,Q18,Q19,Q20,Q21,Q22,Q23,Q41,Q40,Q24,Q39,Q38,Q37,Q36,Q35,Q34,Q33,Q32,Q31,Q30,Q29,Q28,Q1,Q2,Q3,Q4,Q5,Q6,Q7,Q25,Q26,Q27	WSOT-23	42