Pedals for Ukraine - Ukrainian Army BMP SN002

Fingolfen

Well-known member
I've finished up a second Ukrainian Army BMP and I'm donating it to the Pedals for Ukraine relief effort.

UKR BMP SN002 - 01.jpg

This build follows exactly the same pattern as before using the Tayda board coupled with original KD521A diodes and KT3102E transistors (and sadly I'm out of NOS top hat KT3102E transistors, so future ones will have either reclaims or alternate form factor transistors... until those run out... because I'm not buying any from Russia at this point). The resistors are all modern Yageo and Speer 1% tolerance. The film capacitors are mostly Panasonic film capacitors with a few WIMA ones thrown in when I didn't have a Panasonic in that value.

UKR BMP SN002 - 02.jpg

The 3PDT daughter board is from Frog Pedals (just a newer model) and actuates the two LEDs - the red one for when it is in bypass mode, and the green one for active mode. Because these are older Russian / Soviet LEDs, they are dimmer than what most people are used to modernly - especially the green one! All of the connections to the jacks, as well as the wiring to the LEDs themselves is wrapped in tubular heat shrink to protect the solder joints.

UKR BMP SN002 - 03.jpg

The enclosure is a copy of the EHX-style enclosure that the Tayda boards are designed to go into. The potentiometers are all Alpha, and I'm using new production EHX knobs. The enclosure is hand decaled and painted in "Ukrainian" (definitely not Russian anymore) 4BO green with several coats of flat lacquer to give it a military appearance.
 
Excellent! So what's the story with two LEDs? One for bypass, one for engaged?
Yeah - I picked up some ex-Soviet/Russian LEDs from the same place in Ukraine that I picked up the diodes, but since they didn't do bi-color at that point, the red one on the top is bypass and the green one on the bottom is "rock" mode... :D

As these are older Soviet/Russian diodes, they're a bit dimmer than what we're used to modernly (especially the green one), but I think they add extra "coolness" factor... ;)

Bypass:

UKR BMP SN002 - 04.jpg

Ready to rock:

UKR BMP SN002 - 05.jpg
 
I know the feeling. We wanna hear it anyway!
All right... first the rules...

1. Be generous - this is all for a good cause
2. No laughing...
3. Remember this is a very primitive set-up (I have a Focusrite, but don't know how to sync it with video)
4. No laughing...

and last but not least...

5. Remember - you asked for it! :D

Set up: Chapman ML1 Pro Hybrid position 4 (mid/bridge) running from BMP to noise gate to Boss Katana at 0.5 (practice) Watts - unmodified clean channel with a little reverb. I play a few clean notes first (red light) and then start messing around (green light)...

 
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Great build, great cause... and very generous of you !

I'll say this tho, a Yellow and Blue led would put come of the Ukrainian flag colors in your build.... just a thought.
 
Great build, great cause... and very generous of you !

I'll say this tho, a Yellow and Blue led would put come of the Ukrainian flag colors in your build.... just a thought.
If I was building it from scratch now, I would have gone that way... but I had already bought the Russian red/green ones from a source actually in Ukraine... so I figured I'd just stick with those...
 
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