Mu-Tron Bi-Phase

[Sergio]

Yeah! In fact I prefer the easy pcb way! Fingers crossed! Sure youll have it singing soon

[strassercaster]

I  would like to buy one as well

[PMowdes]

Thanks everyone, I'll keep you all posted.

In the mean time here's a current progress update

Boxing up is a bit of a squeeze

 

[rocket88]

Damn tights an understatement. I may actually have to go boardmounted pots.

[PMowdes]

I had to file the corners a tiny bit so that they clear the enclosure screw holes .  I've board mounted the pots on one side and made the holes a little bigger than normal just to give it some play. I'll wire in the rest

There is room top and bottom, just not side to side

Snug for sure  

[Travis]

That is looking badass!! If you move the boards down 1/4" or so would that allow them to clear the corners?

I'm eagerly awaiting your report on the sound. What LDRs are you planning on using? FWIW I used the Tayda LDRs in my Phasor II and when I play it side by side against my original they sound almost identical. Cheap too!

[PMowdes]

A sound report may be a while away

I'm still undecided about the LDR's

The french chap used these http://www.gotronic.fr/art-photoresistance-ldr04-2150.htm

Which i've found in the UK but the spec seems a little different

http://cpc.farnell.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=15002&langId=69&urlRequestType=Base&partNumber=SC13485&storeId=10180

I'm no expert on LDR's so i might socket them and try some different ones.

From what i can make out the phasers use red LEDs and the optocouplers use green (2V forward voltage), i assume that means diffuse green..

I still need to get my hands on a 9v AC supply as well

As for the boards in the box i made allowances for the central screw pillars but it seems that the corner ones are a little tighter, also the box is narrower at the bottom than the top.  It'll fit fine but i'd suggest some careful measuring.

[PMowdes]

More boxing progress, I hate this part of the process. I wish I had a tenth the skills of John K.  

[Sergio]

Really impressive! I think this can take some ruler and double patience dose

[PMowdes]

The end is nigh (at least until I find out if it works or not)

[rocket88]

bro, can't wait to hear it's working, thinking positively over here. it looks great so far. also, my boards just came today. i can't open the box cause if i do i know i'm going to want to start building and i don't have an enclosure design or a massive amount of time left on my spring break and i've got 2 builds that have been waiting to get done for way too long, one being a colorsound phasex that's going in an original phasex wah shell i grabbed like 2 years ago.

[PMowdes]

rocket88 wrote

bro, can't wait to hear it's working, thinking positively over here. it looks great so far. also, my boards just came today. i can't open the box cause if i do i know i'm going to want to start building and i don't have an enclosure design or a massive amount of time left on my spring break and i've got 2 builds that have been waiting to get done for way too long, one being a colorsound phasex that's going in an original phasex wah shell i grabbed like 2 years ago.

Hurry up and unpack it.  mine doesn't work and i'm already confused by the AC power, voltage multiplier and what i'm measuring...?????

[PMowdes]

It lives!!!!!!!! It fricking lives!!!!!!!  

[Travis]

Holy shit!! What was wrong? How does it sound?

[rocket88]

There are no words to describe how excited I am.

[PMowdes]

Travis wrote

Holy shit!! What was wrong? How does it sound?

Pass, reflowed the power components and rewired the power jack and it seems to be OK. Need to wire the control board back in before a sound check

[rocket88]

am i the only one that sees a wall of capacitors around the LEDs and LDRs and think it looks like Stonehenge?

[Emil]

No, that does look very occult indeed! .

BTW, this thread is so cool. Been watching with excitement since the start . I'd love to build one of these one day.

[PMowdes]

So nearly there, it phased briefly whilst i was tinkering with the trimmers, think i need to get some dark shields made

[PMowdes]

Nearly there, just some calibration to do and light shields to build.  I'm having second thoughts about putting it in a Hammond enclosure, I'm tempted to build a custom box for it.

Here's a sound clip.