# BLE Watch ## Description A low energy Bluetooth Watch using the NRF52840 ## Project Details - **Owner:** ulasyalin - **Created:** 4/4/2026 - **Last Updated:** 4/4/2026 - **Visibility:** Public ## Key Components ### 3.3V — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### 3.3V — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### 3.3V — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### 3.3V — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### 3.3V — Label **Pins:** - P1 - P2 ### 3.3V — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### 3.3V — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### 3.3V — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### 3.3V — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### 32.768KHz — [Crystal Oscillator](https://www.flux.ai/jharwinbarrozo/crystal-oscillator~i9.md) - Frequency: 10MHz - Part Type: Oscillator **Pins:** - P1 - P2 ### 32MHz — [Crystal Oscillator](https://www.flux.ai/jharwinbarrozo/crystal-oscillator~i9.md) - Part Type: Oscillator - Frequency: 10MHz **Pins:** - P1 - P2 ### ANT1 — [Antenna](https://www.flux.ai/jharwinbarrozo/antenna~0u.md) - Impedance: 50Ω **Pins:** - undefined ### ANTENNA — Label **Pins:** - P1 - P2 ### ANTENNA — Label **Pins:** - P1 - P2 ### BUTTON_1 — Label **Pins:** - P1 - P2 ### BUTTON_1 — Label **Pins:** - P1 - P2 ### BUTTON_2 — Label **Pins:** - P1 - P2 ### BUTTON_2 — Label **Pins:** - P1 - P2 ### CE2302_Coin Cell Holder — [Single Cell Battery](https://www.flux.ai/lwcassid/single-cell-battery~9f.md) - Voltage: 3.3V **Pins:** - ANODE - CATHODE ### D1 — [LED](https://www.flux.ai/jharwinbarrozo/led-tht~gr.md) - Saturation Current: 93.2e-12A - Forward Voltage: 1.70 - Breakdown Voltage: 0V - Series Resistance: 0.42Ω - Emission Coefficient: 3.73 **Pins:** - ANODE - CATHODE ### D2 — [LED](https://www.flux.ai/jharwinbarrozo/led-tht~gr.md) - Breakdown Voltage: 0V - Forward Voltage: 1.70 - Saturation Current: 93.2e-12A - Emission Coefficient: 3.73 - Series Resistance: 0.42Ω **Pins:** - ANODE - CATHODE ### GND — Label **Pins:** - P1 - P2 ### OLED1 — [OLED 1306](https://www.flux.ai/usairemalamgeer/oled-1306~q8.md) - Manufacturer Part Number: OLED_1306 - Part Type: Display Device - Package or Case Code: Module - Manufacturer Name: Walfront **Pins:** - GND - SCL - SDA - VCC ### Programming Header I2C — [Connector 1x2](https://www.flux.ai/usairemalamgeer/connector-1x2~mm.md) **Pins:** - P1 - P2 ### RESET — Label **Pins:** - P1 - P2 ### S1 — [Push Button](https://www.flux.ai/jharwinbarrozo/push-button~eqk.md) - Manufacturer Name: OMRON - Part Type: Switch - Manufacturer Part Number: B3FS-1050P - Datasheet URL: https://datasheet.lcsc.com/lcsc/1809271215_Omron-Electronics-B3FS-1050P_C231326.pdf **Pins:** - P1 [pin 1] - P2 [pin 3] ### S2 — [Push Button](https://www.flux.ai/jharwinbarrozo/push-button~eqk.md) - Manufacturer Name: OMRON - Manufacturer Part Number: B3FS-1050P - Datasheet URL: https://datasheet.lcsc.com/lcsc/1809271215_Omron-Electronics-B3FS-1050P_C231326.pdf - Part Type: Switch **Pins:** - P1 [pin 1] - P2 [pin 3] ### S3 — [Push Button](https://www.flux.ai/jharwinbarrozo/push-button~eqk.md) - Manufacturer Name: OMRON - Manufacturer Part Number: B3FS-1050P - Datasheet URL: https://datasheet.lcsc.com/lcsc/1809271215_Omron-Electronics-B3FS-1050P_C231326.pdf - Part Type: Switch **Pins:** - P1 [pin 1] - P2 [pin 3] ### SCL — Label **Pins:** - P1 - P2 ### SCL — Label **Pins:** - P1 - P2 ### SCL — Label **Pins:** - P1 - P2 ### SCL — Label **Pins:** - P1 - P2 ### SDA — Label **Pins:** - P1 - P2 ### SDA — Label **Pins:** - P1 - P2 ### SDA — Label **Pins:** - P1 - P2 ### SDA — Label **Pins:** - P1 - P2 ### TEST_PIN1 — Label **Pins:** - P1 - P2 ### U1 — [nRF52832-QFxx](https://www.flux.ai/usairemalamgeer/nrf52832-qfxx~yqg.md) - Manufacturer Part Number: nRF52832-QFxx - Part Type: Integrated Circuit - Manufacturer Name: Nordic Semconductors - Footprint/Package Case: QFN-48 - Datasheet URL: Vhttp://infocenter.nordicsemi.com/pdf/nRF52832_PS_v1.4.pdf **Pins:** - ANT - DCC - DEC1 - DEC2 - DEC3 - DEC4 - NFC1/P0.09 - NFC2/P0.10 - P0.0/XL1 - P0.02/AIN0 - P0.03/AIN1 - P0.04/AIN2 - P0.05/AIN3 - P0.06 - P0.07 - P0.08 - P0.1/XL2 - P0.11 - P0.12 - P0.13 - P0.14 - P0.15 - P0.16 - P0.17 - P0.18/SWO - P0.19 - P0.20 - P0.21/RESET - P0.22 - P0.23 - P0.24 - P0.25 - P0.26 - P0.27 - P0.28/AIN4 - P0.29/AIN5 - P0.30/AIN6 - P0.31/AIN7 - SWDCLK - SWDIO - VDD - VSS - XC1 - XC2 ### XC1 — Label **Pins:** - P1 - P2 ### XC2 — Label **Pins:** - P1 - P2 ### XL1 — Label **Pins:** - P1 - P2 ### XL2 — Label **Pins:** - P1 - P2 *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/ulasyalin/ble-watch~qo](https://www.flux.ai/ulasyalin/ble-watch~qo).* --- *Generated from [https://www.flux.ai/ulasyalin/ble-watch~qo](https://www.flux.ai/ulasyalin/ble-watch~qo)*