Overview
Communication between the skip and sweepers in curling typically relies on shouting and visual hand signals, which are inaccessible to deaf and hard-of-hearing players. This device replaces those signals with a wireless ESP-NOW link: the skip's handheld unit sends sweep-intensity commands directly to a broom-mounted display that lights up an RGB LED strip with a colour-coded legend the sweepers can read at a glance.
Highlights
- ESP-NOW link validated past 76 m — well beyond the 45 m rink length
- Colour-coded LED legend for hurry-hard, sweep intensity, and stop signals
- ~6 hour battery life on an 800 mAh LiPo with calibrated ADC inputs
- 3D-printed enclosures for both the handheld remote and the broom-mounted display
Tech Stack
ESP32
ESP-NOW
C / C++
Adafruit NeoPixel
3D Printing