Joytester for testing of Atari-like+ joysticks
Joytester for testing Atari-like joysticks -- tests also FIRE2 nd FIRE3 in C64 and Amiga/Atari mode.
More about Amiga/Atari and C64 modes: schematic of universal joystick.
Populate only one of U1 or U2, never both!
SW3 is redundand.
You can use the gerber file to order the PCB.
Here you have the schematic file to find out how does it work.
BOM:
| Qty | Reference(s) | Description |
|---|---|---|
| 10 | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10 | LEDs 3mm |
| 10 | R1, R2, R3, R4, R5, R6, R7, R8, R9, R10 | resisors for D1...D10 |
| 3 | R11, R12, R13 | 10KΩ pull-up/pull-down resistors |
| 1 | J1 | DB9 Male Connector ( eg. LD09P13A4GX00LF Amphenol) |
| 1 | J2 | USB B socket |
| 1 | J3 | USB C power-only socket (eg. USB4125-GF-A GCT ) |
| 2 | R14, R15 | 5K1Ω resistors for J3 USB C power-only socket |
| 1 | J4 | USB B Mini socket |
| 1 | J5 | USB B Micro socket |
| 1 | U1 | DIP14 socket (width 7.62mm) + 4070 IC or 4030 IC XOR Gates |
| 1 | U2 | DIP14 socket (width 7.62mm) + 74HC86 IC XOR Gates |
| 2 | C1, C2 | decoupling capacitors for U2 |
| 2 | C3, C4 | decoupling capacitors for U1 |
| 2 | SW1, SW2 | SPDT switches or 3x1 2.54mm pinheaders |
| 1 | SW3 | SPDT switch, terminal pitch: 4.7mm |