... especially when you are working with electronics.
I completed building the display about a month ago and powered it up with 12 volts and all was well. This past weekend I finally got a chance to mount it in the car. I spent 3-4 hours making the installation look real nice and decided it was time to connect the display to the traction battery. That's when the smoke appeared.
I failed to notice the pin-outs on the last page of
Cougar LCD - PCB Assembly Instructions - Rev0.pdf and used page 9 of
CougarLCD_User_Manual_Rev_1_3.pdf to determine the connections. I assumed that the pins read left to right and now realize after looking real close at the schematic that I applied 98 volts to the 12V feed for the buzzer.
The board is now toast.
If anyone has a spare board they would be willing to sell I would greatly appreciate it. I now have a sad hole in the dash of my car that is begging for a display unit.
P.S.
I am offering my services to test instructions. Those who frequent the Paul & Sabrina's cheap DIY 144v motor controller thread will realize I made a similar error when connecting the controller for the first time-
see post for a sample of my ability to mis-interpret instructions.