Latest MegaDrum schematics. 32 inputs.

[mr.xiro]

I can not find R 6.2k, 6.8k change in the future?
and found no inductor 1mH, can not be done?

[dmitri]

I can not find R 6.2k, 6.8k change in the future?

You can replace it with 6.8k. Gain range will be slightly smaller.

and found no inductor 1mH, can not be done?

It is 1uH in fact but you can use anything between 1uH and 1mH.

[johnvpr]

Please see if my shopping list is OK!

and there is an online shop in europe where to buy all components togeather and have a good price?

Digital Board

Condenser
1 * 1uF
4 * 22p
5*100n
1*470n

LED
IC 1N4148
IC MEGA32-P Atmega32-16PU
IC PIC18F2550

Inductor between 1uH and 1mH

Resistors (metal 1/4 watt)
4* 330
3* 1k
2* 33
4*220
2*10k
7*4k7
1*3k3
1* 6k2


IC 6N138N or 6N138

USB Type B Socket

Crystal 16MHz
Crystal 12MHz

Analog Board
32 * 100 Condenser
2 * 100n Condenser
4 * 4051 IC
64 * BAT85 Diode


Other
STRIP OF CONTACTS
DB25 female
DB9 female
DIL40 for MEGA32
DIL28 for PIC18F2550
DIL8 for 6N138N
DIL16 for 4051 x 4
Connectors HE-?? (which ???)

[dmitri]

Compare and verify it with my Complete definitive list of materials to order with links

[japi]

What happens if you use the 4051 without the BAT85s ? Or use another more common like 1N4148 ?

[dmitri]

You may damage the ICs.

[japi]

I see.
Thanks

[scilence]

can you use the 4851 with the bat85's?

[Synthex]

can you use the 4851 with the bat85's?

Yes you can, but it is useless.
4851 = 4051 with bat85.

[kapu]

I have a question about the programming cables, Is it at all possible to program the Atmega from a a 9pin COM port? My computer only has that style.

Schematics would help if its possible.

As far as I know it is not possible.

I have used this to program my Atmega via 9pin COM port