Unless you’re in a hurry to get started, I’d suggest first contacting @lookmumnocomputer and seeing if he could send you a board.
I’ve already got the board, but just one, I just figured it would be easy to add power and sockets and a simple faceplate to it
But if you’re lacking the other board and front panel due to their shipping error, I’m sure @lookmumnocomputer would correct it, and save you a lot of trouble.
Oh he did right away, I ordered the other LFO and he sent a replacement right away. Now I just have this board by itself left over and was wondering if I could make use of it
This module was somehow my final boss.
After I had assembled everything and switched it on, one LED lit up for each LFO and I thought: “Very good, now I just have to find the middle point and go…” After two turns of the trimpot there was a small zone in which both LEDs were off, otherwise with small turns back and forth either one LED was permanently on or the other. I thought I had hit the right spot, but there was no oscillation within the LEDs an no good measurement at the output. And that was the case for all 4 LFOs. I thought I had made a very basic mistake on all 4 boards.
Over the last 8 months I have repeatedly taken it in hand, checked the ICs, resistor values, capacitors and soldering points and in some cases replaced them. I measured and checked everything with the help of the circuit diagram. I had no idea what the error could be.
Yesterday I finally found it:
Just turn the trimpot further!
All 4 LFOs now work. How stupid. ![]()
Anyone know where I can buy some VCLFO 10 chips? Looks like electric druid isn’t shipping to the US currently ![]()
Edit: At least there is a disclaimer for it (one would assume it’s up to date), I may try and see if they will do it now if I can’t find any elsewhere
Synthcube has them. You can also buy blank chips and program your own.
or flash you own, you will need pickit3 , chip and the code.
Get yourself a pickit3 programmer, around $20 and you can buy the chips directly from MicroChip in the US, I mainly program all my own chips now. What you need to know is the PIC chip used for the VCLFO 10, I think it is the PIC16F1825 chip, dont get the LF version which is 3.3V
Oh my gosh, thank you SO MUCH! You just made my day. I also had shelved mine months ago after going over the circuit multiple times, figuring that the LFO10 chip must have been bad.
After reading your post I pulled it out, plugged it in, and turned the trim waaaaaay clockwise and found the pulsing LFO LED! A little farther and got them both blinking
Hello fellow EMS’r. Good to see you back.
