Feel very silly for asking this but when looking at instructions for the drumkill mod here:
http://www.electri-fire.com/drumvolumekill.htm
it says:
For DRUM volume DISCONNECT the jumper and insert a 100k linear pot. Middle lug takes the cpu side (upper side in above picture), left lug to ground for zero volume , right lug for max. volume to the other side of the jumper.
I don't have a clue what he means when he says left lug to ground. Where is the ground point?
Please help because I really want to understand how pots work properly. I feel I've just been winging it with my past projects!
hi,
groud is the "negative" connection of the batteries or power supply connector.
If you have a multimeter or a continuity tester put one wire to the (-) of the battery
(connection spring) and the other wire to check where there is ground on the circuit board.
(http://highlyliquid.com/kits/skm/sk-1-power.jpg)
http://highlyliquid.com/kits/skm/install-sk-1.html
how potis work:
http://en.wikipedia.org/wiki/Potentiometer
Thanks a lot mate. Its always good to know there are people willing to help others.
I guessed that was what it meant but I had to make sure because I know you can kill some things by poking around near the power. Its my first sk-1 so I don't want to murder it before I've begun!
Just stick close to the three big NEC chips and you'll do fine. If I recall, the bottom right pin on the rightmost chip goes to the ground.
Ground on a circuit board is the first thing to look for before doing any bending, and is easy to spot:
Anything with metal brackets or shields is usually ground(and reads low ohms to the - batt terminal.
The boards ground trace usually snakes all over the place with wider traces...