Quote:
Originally Posted by NeilM  Digikey a) +5VDC Voltage Regulator (P/N LM7805CT-ND, $0.65) http://search.digikey.com/scripts/Dk...me=LM7805CT-ND b) 100K-ohm Micro Trimmer Potentiometer (P/N 987-1060-ND, $2.02) http://search.digikey.com/scripts/Dk...me=987-1060-ND c) DPDT Micro Relay 12VDC (P/N Z768-ND, $3.00) http://search.digikey.com/scripts/Dk...l&name=Z771-ND Notes: - I picked components that are higher in spec, especially operating temperature range. - The DPDT relay handles dual O2 sensor applications, but it's so cheap you could just not use the second pole for single sensor applications (e.g. 4-cyl). - DaveAZ edit: I paid $5.93 +$2.22 shipping +0.51 tax = $8.66 total, shipped. I think you're better off to pick up a project box and circuit board at RS. Radio Shack 1 - Project Box 3x2x1 (#270-1801 $2.69) 1 - circuit board (#276-049 $2.19) DaveAZ edit: Circuit board will need to be cut down to fit the box. Neil |
Since no one had a circuit diagram/schematic, I drew one up.
I gathered everything on Neil's shopping list, but I haven't assembled it yet.
If anyone does, take some pics and post them up. I'll do the same.