RepX is a handheld grip rep counter designed to automatically count hand-gripper repetitions.
| Step | Status |
|---|---|
| Define Problem |  |
| Select Components | |
| Schematic Design | |
| PCB Layout | |
| DRC & Design Verification | |
| PCB Manufacturing | |
| Soldering & Assembly |  |
I do hand-gripper exercises at home and sometimes in class, but I always end up counting reps wrong or forgetting what rep I'm on.
RepX solves this by automatically detecting each squeeze and keeping track of the number of repetitions.
🔧 Prototype 1 — Currently soldering
The first hardware prototype is currently being assembled and soldered. The goal is to test the sensor, microcontroller, and display together before moving toward a more refined version.
- Automatic rep detection and counting
- Small, portable form factor
- Battery powered
- Designed to attach to a hand gripper
- Microcontroller: ATtiny1616
- Sensor: Hall effect sensor
- Display: 7-segment display
- PCB: Custom PCB designed in Altium
- Enclosure: 3D printed