BLEPad is a clone of LilyPad Arduino USB with BLE support. We add a mini size BLE module (DA14580) on it.
The board communicate with BLE module by UART port.
Now it's avaiable on Tindie
<a href="https://www.tindie.com/products/aprbrother/blepad-wearable-ble-dev-board/" target="_blank">https://www.tindie.com/products/aprbrother/blepad-wearable-ble-dev-board/</a>