hackaBLE is a tiny (~ 18 mm x 28 mm) Open Source Nordic nRF52832 based BLE development board you can embed in your BLE projects. It's designed such that you can use it three ways:
- On a breadboard
- On a custom PCB, hand-soldered easily using the castellated 2.54 mm pitch headers
- On a custom PCB, using a stencil and oven, making use of extra pads underneath the PCB
hackaBLE uses offers more value than just using the BLE module directly - since it incorporates the necessary passive components - including the ones for the buck converter for power saving - and adds an RGB LED and a button for convenience. It's also much easier to solder than the bare modules.
Available for purchase on Tindie: https://www.tindie.com/stores/ElectronutLabs/