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GitHub - nRFMesh/nRF5x-smartwatches: nRF52/nRF51 Smartwatches reprogramming with new fresh from scratch firmware development
Amazon.com: Nordic BLE 4.0 nRF51822 Controller Chip Bluetooth Module Small Size 18.5 x 9.1x 2.0mm 5 Pack : Electronics
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Amazon.com: Nordic BLE 4.0 nRF51822 Controller Chip Bluetooth Module Small Size 18.5 x 9.1x 2.0mm 5 Pack : Electronics
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Bluetooth 4.2 Low Energy Module With Nordic NRF51822 Chip RF-BM-ND01 | RF-star
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Bluetooth Low Energy smartwatch delivers detailed health and fitness monitoring - nordicsemi.com
51822 ble module 4.2 for zigbee smart home ble4.2 based on nordic nrf51822, View ble 4.2 module based on nRF51822 ble module, Product Details from Wireless-Tag Technology Co., Limited on Alibaba.com
Amazon.com: Nordic BLE 4.0 nRF51822 Controller Chip Bluetooth Module Small Size 18.5 x 9.1x 2.0mm 5 Pack : Electronics
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Custom Firmware For Cheap Fitness Trackers | Hackaday