Recent content by engineerj2010

i found the circuit... http://www.8051projects.info/proj.asp?ID=76 i have attached a copy of the source code. The SM630 is a fingerprint module with the ability to store fingerprints inside its built in memory. My understanding is that the user presses the add button and scans the...

Fingerprint recognition circuit help! Hi Guys, I am building a fingerprint security system, but i am having trouble identifying every component. I would really appreciate your help. And also if you could talk me through how the circuit works...but more importantly, will it work...

also, in this circuit: http://www.robot-electronics.co.uk/htm/srf1.shtml how would i connect several led 7 segs to show the result?

in the original circuit, where is the actual power supplies? i see all the +9 +5 and GND. But if i copied this circuit onto a schematic and printed a pcb, how would i connect them? thanks

after looking at it, i think it may be a bit hard for me! Any ideas on an easier ultrasonic distance meter kit that i could build? thanks

Thanks for the reply, however could u please explain it to me a little more obviously, lol sorry but I am kinda a novice! are there any parts of the circuit that can be scrapped? also can you explain it more in depth so i can understand! Thanks x

HI, THIS IS MY FIRST POST. I AM ACTUALLY A STUDENT AT A UK COLLEGE AND I AM STUDYING ELECTRONICS. I HAVE ALREADY PASSED MY COURSE WITH FLYING COLOURS WITHOUT SITTING MY FINAL. I AM NOW WORKING ON A PERSONAL PROJECT AT HOME. IM JUST HOPING THAT SOME OF YOU GUYS COULD LOOK AT THYE ABOVE CIRCUIT...