Rev 2.0 LightsDriver Validation

LightsDriver_Rev_2: https://university-of-waterloo-solar-car-team.365.altium.com/designs/87AF22E7-1F4C-4B7B-B905-EC3531FC43CB?variant=Soft Start %2B Parallel#design

• configuration: soft start + parallel

  • R1 is populated

  • R10 is unpopulated

Daytime_Lights_Rev_1: https://university-of-waterloo-solar-car-team.365.altium.com/designs/FE2D5455-565F-4032-B3CD-A365D68A7688?variant=[No Variations]#design

• white xlamp LEDs

After both boards were soldered, jumpers were soldered between both boards:

Open

The pads LED_V+, LED_V-_A, and LED_V-_B from P2 (on LightsDriver board) were soldered to the corresponding test points on the DRL board.

Powering on the board

Before connecting the board to a PSU, I highly recommend rotating R5 (brightness pot) all the way to the left (counter clockwise). This is so that the LEDs aren’t on max brightness once the board is turned on.

I then connected the board to a PSU through P1 using the appropriate molex plug and powered it on using 13.5 V, 0.8 A current limit. I was then able to control the brightness of the LEDs as shown:

Open

And please don’t stare directly at the LEDs!!!

TO BE EDITED:

Test point measurements

• rotate R5 all the way to left (counter clockwise) measurements

• rotate R5 all the way to right (clockwise) measurements

  • cover LEDs with tape