- Atari DIN13 to VGA
- 3.5mm A/V connector with volume control.
- Automatic detection of resolution.
Added a AG-pad (AG after the guy who requested it) cut trace and connect the other pad to feed h-sync to PB2 instead of v-sync. Updates to firmware is needed.
Plug device into your Atari.
Turn your Atari on.
Press .25-1.999[...] seconds: Switch mode.
Press +2 seconds: store current mode as default at cold boot.
For least amount of wobbliness:
- Backside SMD stuff (TS5V330, ATtiny85 and 78l05).
- Flip board over, solder all SMD.
- DIN13
- Lastly solder volume pot and VGA. Flipping of board is optional if you're a good at soldering.
Part | Value | Device | Package | Description | MF | MPN | OC_FARNELL | OC_NEWARK | PACKAGE | PROD_ID | SUPPLIER |
---|---|---|---|---|---|---|---|---|---|---|---|
ATARIOUT | DIN13T | DIN13T | DIN13 | ||||||||
IC2 | 78L05F | 78L05F | SOT89 | POSITOIV-VOLTAGE REGULATORS | |||||||
JP1 | PINHD-1X2 | 1X02 | PIN HEADER | ||||||||
S2 | K2-1823SA | ||||||||||
TM1-3 | 100R | TRIMPOTTC33X | TC33X | SMT trimmer potentiometer part number TC33X | |||||||
TS5V330 | V330 | SOIC16N | |||||||||
U$1 | PJ-320D | Audio jack - 3.5mm TRRS variety - two rings. | CONN-10676 | ||||||||
U$2 | DB-1001N | DB-1001N | THUMB_POT | Multicomp | |||||||
U1 | ATTINY85-20SU | ATTINY85-20SU | SOIC127P798X216-8N | 8-bit Microcontroller with In-System Programmable Flash | ATTINY85-20SU | 1455164 | 58M3797 | SOIC-8 | Atmel | ||
X1 | F15HDVS | HDF15V | SUB-D | unknown | unknown |
Symptom | Solution |
---|---|
Constant switching | Check ATtiny soldering, probably rebooting. +5V and GND are possible offenders. |
Dark picture. | Check soldering on multiplexer, pin 8 and 16 (GND and VCC). |
Physical switch not working, software switching works. | Check soldering at ATtiny PB4 and soldering at the tactile switch itself. |
Niether software or hardware switching works. | Check soldering ATtiny PB3 and multiplexer pin 1. |
Niether software or hardware switching works, boots in low res. | Did you remember to program your ATtiny? |
Software switch not working | Check soldering on ATtiny PB2 and V-sync on DIN |
Hardware switch slow. | Did you set fuses ("Burn bootloader" in Arduino IDE) before programming ATtiny? Processor is probably running in 1MHz. |
Won't hold saved state, switches to hires after cold boot. | Try upping bootWait, probably some timing issues at boot. A recap of PSU might be in place as well. |