A PS2-style thumbstick broken out to headers: two potentiometers for X and Y on analog pins, plus a momentary switch under the cap.
Specifications
| Axes | 2 (X, Y) analog |
| Button | Momentary, digital |
| Resistance per axis | 10 kOhm |
| Operating voltage | 5 V |
| Centre value | ~512 on a 10-bit ADC |