My own take on a PewPew device, PicoPew, based on a TinyPICO ESP32 board, is now available for purchase on Tindie: https://www.tindie.com/products/cwalther/picopew/ I have 15 kits ready, more will be ordered once I see how well they sell. This is an experiment for me, I have never sold anything worldwide before. Curious (and a little nervous) how it will work out! -Christian