Please use a AA battery and use 22SWG enameled copper wire, wind 10 turns over the battery and then insert R2 and R3 through it it. If you have inductance meter then kindly measure to get 700Uh
My bad I thought the file was attached. I have attached them now including the BOM. Please check prior to building. I have just ordered the PCB and have not tested the same. I shall take no responsibility for any error that may have occurred due to an oversight