Sinclair ZX80 / ZX81 / Z88 Forums

The sound of a picture challenge : Simply link the resistor output on a cheap PC USB sound card (2$) to avoid burning the main inboard sound card... The positive or negative low frequency signals can destroy the sound card ! The voltage had to be less than 5v to avoid to saturate the sound card rec...

ATARI ST Card (article's PCB):

Kicad v.6 & Gerber files: Note:
In the article, the component's side in the top view is false.
The photo gave the right component side.

AMSTRAD CPC 464/6128 analog card: GERBER/Kicad 6 project (NOT TESTED):
http://abandon.pcbs.free.fr/mageco.htm

For the AMSTRAD CPC 464/6128: (using a photodiode BWP 21 Telefunkel or a photoresistor = 2 colors) http://abandon.pcbs.free.fr/mageco.htm

Wings3D file only (All Project):

3D case:

Wings3D+STL:
(estimate price 2$ + Shipping for1 SLA resin ( IMAGINE BLACK) model)

Hi,

In fact, you have 5 PCB for the cylinder's sides board.
Two double boards (2PCB+2PCB 1.6mm*2 per side)

1 PCB remain and can be use to enclose the gears.

You had to cut it to let the motor and wiring things to pass throw it.

Have fun.

Connect the analogic card:

Wings3D v2.3 file: