The following pages and posts are tagged with
| Title | Type | Excerpt |
|---|---|---|
| I2C-8574 | Page | I2C PCF8474-based IO Expander with 4x IOB daughterboard connections |
| IOB-Inputs | Page | IOB interface provides 1x IO4 port with 4x Input i/o lines. |
| IOB-Outputs | Page | IOB Interface provides 1x IO4 port with 4x open drain output i/o lines. |
| IOB-RR-CirKits | Page | IOB Interface with an 8-bit RR-CirKits-style 2x5 (10-pin) ribbon cable connector |
| IOB-Signal | Page | IOB Interface drives 2x Signal Heads via a RJ45/8 connector. |
| IOB-Turtle | Page | IOB Interface provides 1x IO4 port for connection to an IO4-Turtle |
| IOB-Generic | Page | IOB interface provides 1x IO4 port with 4x generic (hardwired) Input or Output i/o lines. |
You are free to download these files and make your own boards.