I'm offering the same mod kit that Altitude used to offer. I redesigned the noise source pcb from scratch following the original 909 schematic because I wanted to practice with kicad but then I had to order at least 10 boards to have 'em made from my supplier. I only need 2 of them so I can sell the others. I can offer a kit consisting of:
- 1 x board
- 1 x cd4070
- 2 x cd4006
Price is the same as altitude: € 13,25 (= $ 15) for one kit
Shipping is:
- with tracking: € 9,50 for Europe. Ask for other countries.
- no tracking: € 3,50 for Europe and € 4,50 for other countries.
I will do another run if there's enough interest.
Component list:
R1-2-5: 10k
R3: 33K
R4: 100K
R6: 47K
C1: 4,7 uF (electrolytic > 25v)
C2: 100pF (ceramic, 5mm spacing)
C3: 100nF (ceramic, 2,5 spacing)
D1-2: 1N4148
IC1: 4070
IC2-3: 4006
For instructions follow the original post by Altitude: viewtopic.php?f=26&t=837
Thanks!

