/challenges-projects/design-challenges/low-power-iot/b/blog/posts/handy-ble-drum-5-make-the-prototype-drum-work1 Make the Prototype Work 2 Start the Project 3 Connectiong with the Board with Mobile BLE app 4 More to do 1 Make the Prototype WorkThere have been times working on Clock conflics, the PDM depends on PLL clock and FreeRTOS make its ownen-USTelligent Community 12