Quote:
Originally Posted by t vago
You could get yourself a 4013 dual D flip-flop CMOS chip. It's a fairly basic piece of 1970s technology that should cost around $0.50 per chip. It will accept a car battery or alternator voltage with no problem.
Here's a datasheet for one -> https://www.fairchildsemi.com/datash...D/CD4013BC.pdf
Get a 14-pin DIP chip, a 14-pin DIP socket for the chip, a 0.1 uf capacitor (preferably not electrolytic), and solder jumper wires as described in the below pin assignments:
10 <-> 8 <-> 7 <-> 6 <-> 4
3 -> 2.2 kohm resistor -> 14
3 -> input Alfa VSS signal
1 -> 11
14 -> V+ (same source wire that powers the MPGuino, for instance)
7 -> ground
14 -> 0.1 uf capacitor -> 7
1 -> 11
13 -> VSS output to MPGuino
2 -> 5
12 -> 9
No problem.
The MPGuino version can be found on the screen, for approximately 2 seconds after it is first powered up. |
Does this look correct?.
One question, i know the capacitor has a negative side, clearly marked.. but the resistor, to where does the golden strip point?.
Hmm.. didn't show code version on startup for some reason, tried twice.