Bluetooth Development Kits: From Board Selection to a Working BLE Demo
Yenra working checklist | September 13, 2026
https://yenra.com/bluetooth-development-kits/

Purpose: Choose a supported BLE kit, follow a pinned sample workflow and record observable data and recovery checks.
Use with the linked guide and exact equipment documentation. Fill in actual observations; this is a blank working aid, not measured product results.

Equipment/models: __________________________
OS/app/firmware or hardware revision: __________________________
Date and starting symptom/task: __________________________

1. Record board/revision, OS, SDK/toolchain and mobile app versions. Reference: SDK v3.2.1; nRF52840 DK; target nrf52840dk/nrf52840.
Result / evidence: __________________________

2. Confirm debugger detection, data cable and the sample's documented build configuration; save build/flash output.
Result / evidence: __________________________

3. Confirm startup/advertising and connect to your own Nordic_LBS device.
Result / evidence: __________________________

4. Enable Button notifications and test Button 1 press/release on the nRF52840 DK.
Result / evidence: __________________________

5. Write LED characteristic as one hex byte: 01 on / 00 off; observe LED 3. Record actual values and outcomes.
Result / evidence: __________________________

6. Disconnect/reconnect and restart; check subscriptions and repeat the full sequence. Save configuration before modifying the example.
Result / evidence: __________________________

Decision and next action: __________________________

Source references:
https://academy.nordicsemi.com/courses/nrf-connect-sdk-fundamentals/
https://academy.nordicsemi.com/courses/bluetooth-low-energy-fundamentals/lessons/lesson-1-bluetooth-low-energy-introduction/topic/blefund-lesson-1-exercise-1/
https://raw.githubusercontent.com/nrfconnect/sdk-nrf/v3.2.1/samples/bluetooth/peripheral_lbs/README.rst
https://raw.githubusercontent.com/nrfconnect/sdk-nrf/v3.2.1/samples/bluetooth/peripheral_lbs/sample.yaml
https://raw.githubusercontent.com/nrfconnect/sdk-nrf/v3.2.1/subsys/bluetooth/services/lbs.c