Troubleshooting

Plate won’t turn on

1. Charge for at least 30 minutes — the plate may be fully depleted
2. Try a different USB-C cable and charger
3. Press the power button and check for the heartbeat flash on the status LED

Plate not appearing in the app

• Ensure Bluetooth is enabled on your phone/tablet
• Make sure no other device is already connected to the plate (a ZPlate connects to one client at a time)
• Power cycle the plate (off then on)
• On Android, grant the app Location and Nearby Devices permissions

Noisy / drifting signal at rest

• Check the surface is rigid and level — rubber flooring compresses and causes drift
• Tare from the app’s Device screen after the plate has been powered on for at least 30 seconds
• Signal noise floor is ~1–5 N at rest; values in this range are normal

One side shows zero force

• Check the athlete has one foot on each measuring surface and is not crossing the centre line
• Re-tare with nothing on the plate and watch that side’s reading again
• Power cycle the plate
• If the issue persists, a load cell or ADC channel on that side may need service — contact support

App disconnects mid-test

• Keep the tablet/phone within 5 m of the plates
• Avoid sources of 2.4 GHz interference (other BLE devices, Wi-Fi routers, microwave ovens)
• The test data captured up to the disconnect is saved; the session may be incomplete

Firmware update fails

• Ensure battery is above 30% and that no capture is running (the plate refuses updates while streaming)
• Stay within BLE range during the entire update (~3–5 minutes)
• If update fails mid-way, power cycle and retry — the bootloader is safe to re-flash

Contact support

Email support@hootuo.com with your device serial number (printed on the underside of the plate) and a description of the issue.