Binary teaching board.
| Button | Duration | Description |
|---|---|---|
| <1> to <8> | Short | Toggles binary digit. |
| Short | Increases binary number by one. | |
| Short | Shows or hides display. | |
| Long | Toggles between decimal and hexadecimal display. | |
| Extra | Puts device to sleep. | |
| Extra + 2s | Full reset. |
To enter diagnostic mode, keep both Display and Plus buttons pressed during reset.
| Mode | |
|---|---|
| 1 | Measures power-supply voltage. |
| 2 | Displays power-supply voltage in percents |
| 4 | Test UART receive and timer. |
| 8 | Test UART transmit. |
| 16 | |
| 32 | Shows all segments for third digit. |
| 64 | Shows all segments for second digit. |
| 128 | Shows all segments for first digit. |
While case has a space for holes, I decided to go without them as screws make it just too bulky. And anyhow, PCB fit is tight enough to keep board from falling out.
- Josip Medved, www.medo64.com *