I believe the chip on the upper right is some flavor of Arduino hardware he's using. I think makotosan is probably asking about the upper-left IC, which is probably a shift register. The one here looks like it's larger than it needs to be - you'd only need 8 parallel outs so a 74HC595 or some such would be fine. It would take longer than one of the AY's clock cycles to populate the register, which may be why the oscillator isn't going to the ard.
The AY-3-8910 is a 40 pin chip. That looks like it would be the AY-3-8912.
I see you have a crystal oscillator connected to the 8912, but how do you sync up the clock signal with the Arduino? Also, I notice you have a pot with one end on the crystal and the other on the + of your power, and the center tap going to the Arduino. Can you explaing what that does?
And one final question, what is the chip you have on the top right?
Nice amhearst! I live in pittsfield MA (west of amhearst.) Anyway, I was going to get an Arduino to do this too, I have an AY-3-8910A chip my HS homeroom teacher gave me (in a blister pack with schematics info and everything).
I believe the chip on the upper right is some flavor of Arduino hardware he's using. I think makotosan is probably asking about the upper-left IC, which is probably a shift register. The one here looks like it's larger than it needs to be - you'd only need 8 parallel outs so a 74HC595 or some such would be fine. It would take longer than one of the AY's clock cycles to populate the register, which may be why the oscillator isn't going to the ard.
brendanpaulclarke 9 months ago
The AY-3-8910 is a 40 pin chip. That looks like it would be the AY-3-8912.
I see you have a crystal oscillator connected to the 8912, but how do you sync up the clock signal with the Arduino? Also, I notice you have a pot with one end on the crystal and the other on the + of your power, and the center tap going to the Arduino. Can you explaing what that does?
And one final question, what is the chip you have on the top right?
mak0t0san 1 year ago
@mak0t0san the chip on the top right is some form of Arduino board, which would make the IC some kind of atmega microcontroller.
stephk42 7 months ago
Nice amhearst! I live in pittsfield MA (west of amhearst.) Anyway, I was going to get an Arduino to do this too, I have an AY-3-8910A chip my HS homeroom teacher gave me (in a blister pack with schematics info and everything).
Biopharmer 1 year ago
Neat demo.
Can you share the schematic?
I have an AY-8910 in a drawer just begging to be connected to my Arduino.
grooviant 2 years ago