These are the instructions and code for a little side project I undertook while doing some DSP work. With a few components (Listed Below) It turns a Beaglebone Black into a simple oscilliscope annd signal generator.
The pinouts are in the connections folder.
Components I used to build:
- 1x BeagleBone Black
- 1x Beaglebone Audio Cape
- 1x Graphic ST7565 Positive LCD Display - https://www.adafruit.com/products/250
- 1x 330Ω Resistor
- 4x Push Switches
- 4x 1k Resistors
- 5x 10k Potentiometers
Input Functions
| Input | Menu | Oscilloscope | Signal Generator |
|---|---|---|---|
| Select | Scroll Modes | ||
| Start | Enter Mode | Back To Menu | Back To Menu |
| Button 1 | Offset + | Channel 1 Wave Type | |
| Button 2 | Offset - | Channel 2 Wave Type | |
| AIN0 | Channel 2 Frequency | ||
| AIN1 | Channel 1 Frequency | ||
| AIN4 | Trigger Level Adjust | ||
| AIN5 | Voltage Division | Channel 2 Amplitude | |
| AIN6 | Time Division | Channel 1 Amplitude |