2 layers52.7 × 55.2 mm
Homepost
CeSiumUA/homepost
A simple IoT project that integrates with HomeAssistant and involves phone presence tracking, temperature/humidity (pressure and others in future) and radiation level measurement
18 parts1
BLE
74 boardsKiCad boards from 50 GitHub repositories tagged “ble”, the most starred first; open any of them in PCBKit.
- 2 layers
- 2 layers60.5 × 91.5 mm
Kicad sailframes e1
FForzano/xgsail-e1
Open-hardware ESP32 sailing tracker (E1): GNSS/IMU/wind/pressure logging, ESP-NOW mesh for live fleet position + race-start detection, BLE/WiFi upload. Firmware, KiCad PCB, and a published TypeScript client SDK.
21 parts1Apache-2.0 - 2 layers50 × 30 mm
- 4 layers158.4 × 66 mm
- 4 layers38 × 27.7 mm
Beacon pcb
a6-a9-ai/BLE-beacon-38x28mm-high-autonomy-CR2477
38x28mm BLE beacon optimized for high autonomy - can last up to years depending on use
14 partsCERN-OHL-P-2.0 - 2 layers100 × 50 mm
Smart cleaning robot
andrew-abdelmalak/smart-cleaning-robot
MicroPython firmware for a low-cost floor-cleaning robot on a Raspberry Pi Pico W, with BLE remote control, ultrasonic obstacle avoidance, and feed-forward plus PID wheel control. Bachelor thesis, GUC 2025.
8 partsMIT - 2 layers60 × 50 mm
- 2 layers41 × 109 mm
WifeSignal3ch
ariemeir/family-comms-signal
A traffic light for the office door: a SwiftUI app, a 290-line aiohttp and bleak BLE bridge, ESP32-C3 firmware, a custom two-layer KiCad board, and a Fusion 360 script that generates the enclosure. In daily use.
11 parts - 2 layers20 × 20 mm
B MDBT42TV AT BRK R1.0
Boardoza/Boardoza_MDBT42TV_AT_Bluetooth_5_1_Module_Breakout_Board
Compact Bluetooth 5.1 UART module breakout board using Raytac MDBT42TV-AT for low-power wireless data communication in embedded systems.
15 partsCC-BY-SA-4.0 - 2 layers56.2 × 94.8 mm
- 4 layers50 × 16 mm
Pmeter
Guiimartinho/bike-powermeter
Medidor de potência para bicicleta, aberto do extensômetro ao pod: torque por ponte de classe transdutor no braço do pedivela, BLE Cycling Power e ANT+ Bicycle Power. Firmware Zephyr, placa e case gerados por programa.
59 parts - 4 layers55 × 85 mm
Pokodoro
justinjchae/poko
Poko: a phone-free MagSafe companion. nRF52840 + Zephyr, round display, haptic ring, voice memos, iPhone app, parametric CAD, KiCad.
52 parts - 2 layers61 × 90.9 mm
- 4 layers45.8 × 46.4 mm
Totem
ljagiello/totem-compass
Independent reverse-engineering documentation of the Totem Compass ESP32 + MicroPython firmware (v5.0.2): image/memory map, the 96 frozen modules, the 2.4 GHz protocols (BLE, ESP-NOW mesh, WiFi OTA), and a custom-client…
144 partsApache-2.0 - 2 layers80 × 60 mm
- 2 layers28 × 54.8 mm
- 2 layers43 × 24 mm
Uart2oled ble
MasaoC/uart2ble_oled
Arduinoを使用し、UART信号を受信し、それをOLEDに表示すると同時に、XIAO（ESP32C3）を使用してBLEで送信します。
10 partsMIT - 4 layers
Lora node
Mehdi-Ldj/lora-ble-sensor-node
Off-grid LoRa/BLE sensor node — 868 MHz LoRa, 2.4 GHz BLE, solar/LiFePO4
110 partsCERN-OHL-P-2.0 - 2 layers115.3 × 101.6 mm
- 2 layers
LED Coaster
Olivermoberg98/LED-Coaster
Battery-powered RGB LED drink coaster: ESP32-C3 firmware, Android BLE app, KiCad PCB and 3D-printed enclosure
84 partsMIT - 4 layers27 × 30.6 mm
PulseWristTrack
SimulatedFlow/kicad-board-2026-07-24-pulsewristtrack
PulseWristTrack - wearable wrist tracker PCB with Seeed XIAO nRF52840 Sense, MAX30102 pulse / SpO2 sensor, IMU and BLE. Bare PCB, KiCad source files.
18 parts - 2 layers65 × 45 mm
WaveRig
TA4RX-SP9AQG/WaveRig
WaveRig is an ESP32-S3 BLE bridge connecting ICOM CI-V and Yaesu/Kenwood CAT radios to Wavelog Mobile — reads live frequency, mode and power over Bluetooth and streams it straight into your QSO log.
56 partsApache-2.0 - 2 layers90 × 64 mm
Divine light
tobycm/divine-light
A handheld device with neopixels so you can have lights wherever you want :b
88 partsMIT