Open source smart bracelet project reference solution based on NRF51822

Overview

The PCB part of the bracelet mainly includes an MCU with integrated BLE function and various peripherals controlled by the MCU. A complete solution including hardware design documents, schematics, ROM, and communication protocols. Bracelet functions: sports step counting (including mileage and calorie calculation); sleep monitoring; time display; sedentary reminder; call reminder; alarm clock; mobile phone anti-lost (two-way anti-lost for mobile phone and bracelet); remote control photography (requires mobile phone system support); mobile phone unlocking (requires mobile phone system support) Main peripherals: Bluetooth RF circuit; G-sensor using SPI interface; linear motor drive circuit using I2c interface; LED dot matrix drive using I2c interface, sharing bus with linear motor; key input using GPIO; LED light using GPIO; ordinary motor drive circuit using GPIO; external reset circuit.

Design Files

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Update:2025-08-03 02:31:21

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