Difference between revisions of "TinyPS2"
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* SPI connector to download ATTiny85 | * SPI connector to download ATTiny85 | ||
* 2x3 header | * 2x3 header | ||
| + | * Program ATTiny85 without PS/2 keyboard attached | ||
* Pinout | * Pinout | ||
| Line 46: | Line 47: | ||
* Missing pull-up resistors on PS/2 | * Missing pull-up resistors on PS/2 | ||
| − | * Missing C3 cap | + | ** Rev 2 - add pull-up resistors |
| + | * Missing C3 cap in sequence | ||
| + | ** Rev 2 - change C4 => C3 | ||
== Assembly Sheet == | == Assembly Sheet == | ||
* [[TinyPS2 Assembly Sheet]] | * [[TinyPS2 Assembly Sheet]] | ||
Revision as of 00:13, 2 January 2020
Contents
Features
- PS/2 keyboard or mouse to TTL Level Serial converter
- ATTiny85
- 115,200 baud
- 49x49mm ODAS form factor
- 4-40 mounting holes
Connectors
J1 - TTL Serial Connector
- 5V
- SERTX
- N/C
- GND
J2 - PS/2
- Standard PS/2 Mini-DIN-6 connector
H2 - In-System Programming Header
- SPI connector to download ATTiny85
- 2x3 header
- Program ATTiny85 without PS/2 keyboard attached
- Pinout
- KBCLK
- GND
- SERTX
- KBDAT
- RST*
- GND
Firmware
Schematic
Issues
- Missing pull-up resistors on PS/2
- Rev 2 - add pull-up resistors
- Missing C3 cap in sequence
- Rev 2 - change C4 => C3
