Again, personal preference. I like the nodemcu better. Then there is sparkfun thing, adafruit huzzah, wio with groove, etc. You'll want one of the boards liste

Again, personal preference. I like the nodemcu better. Then there is sparkfun thing, adafruit huzzah, wio with groove, etc. You'll want one of the boards listed on this webpage: http://esp32.net http://esp32.net $3 or $15 really doesn't matter here.