Pistol Detector - TOTeM (Complete Details)

[Mike(Mont)]

Pahom, thanks for your reply and encouragement. The Contraption seems to work as is but I just need to find out if the ToTeM receiver will work better (actually some sort of hybrid). Honestly that computer generated stripboard looks like near impossible for my eyesight and somewhat shaky soldering technique. I lost count of how many jumpers on that board, nearly 70, so times two that is a lot of soldering right there. I'd never get it working because the strip board peels apart when doing repairs, at least at my skill level. I wish somebody had a PCB to sell, but for now this project is just experimentation so I don't care how pretty it doesn't look.

[Pahom]

Hi all
I have asembled this pcb of totem
That is woking very well
I advice the mem ber to make that
Best regard
Zakari

Good evening zakari. On the printed circuit board, you need to bring the power minus to the first leg of the timer 555 (U 7) according to the scheme.

[Mike(Mont)]

Looks good, thank you.

[zakari]

hi pahom
printed circuit is correct
look under the c6


best regards
zakari

[Pahom]

hi pahom
printed circuit is correct
look under the c6


best regards
zakari

Yeah, sorry I missed it. I'll add a jumper .it's a thin conductor.

[teo]

For you zakari you got good results with the pcb totem you assembled

[kostask]

Hi if you know, the Instructable of the two coil in front of totem and the coil in ferrite is the same 870 mH ? THANKS

[Qiaozhi]

Hi if you know, the Instructable of the two coil in front of totem and the coil in ferrite is the same 870 mH ? THANKS

The inductance of the RX coil is 870uH (not 870mH).
The inductance of the TX coil should be around 916uH.

[kostask]

thanks Qiaozhi

[abdou2014]

with original schematic of totem , i can't detect 1.5 v spark , and with modification i can detect it from 1.2 meter !

[darkman]

nice news abdu bro .. that's mean's with your modification The device has become very sensitive !

[abdou2014]

I want to know about the people who built the TOTEM, if it detect a spark of a battery 1.5V and at what distance ?

[abdou2014]

nice news abdu bro .. that's mean's with your modification The device has become very sensitive !

yes my friend , and it detect also a bip from clock every one second !

[abdou2014]

it's not just a question of sensitivity , i removed the comparator , it's a fast pulse extender and display !

[Qiaozhi]

TOTeM is capable of detecting the spark from a 1.5V battery several meters away (not just 1.5 meters). Also, an old style CRT television can be detected from 6 meters.