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DIY TTL driver

williamprvz

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Apr 24, 2020
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I'm experimenting with a cheap galvo kit I bought on aliexpress, I also bought a cheap laser without a driver, I would like to make my laser blink. I have a few transistor with me, can i use them to make myself a ttl driver ?
thanks for your help.
 



williamprvz

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Apr 24, 2020
Messages
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Yes. Google 2 transistor driver.
I googled it a couldn't find anything intresting, I think that 2 transistor driver is just to make it blink at a given frequency but i would like to turn it on and off for depending of a signal.
 

williamprvz

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Apr 24, 2020
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I'm not sure I unterstand the schematics, it only has one voltage source, where should I put the ttl signal ?
Thanks for your help
 

Cyparagon

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Sep 12, 2007
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Per my last email:
" Add your own open-drain signal output to the relevant gate. "

If that isn't decipherable, this project isn't for you. It isn't as simple as building from a schematic, since power sources, input signals, and laser diode characteristics vary a lot. Values need to be customized. There is no one laser diode driver that works with all laser diodes.

I don't mean to be condescending, I'm just trying to be realistic. Find something easier to start with.
 

hakzaw1

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Apr 2, 2009
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^^^ TOO TRUE.
I wasted much time and some $$ trying to make my own scanner set--There is pretty much nothing to really gain from DIYing some parts-- and no savings either..Cyp is right..
And to this day nothing has changed..

I will PM you a link you need to check out.. hak
 




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