Nice work Dave, is the Gui node red?? OTT is just the beginning;-)
Its good the esp worked for that. I tried one with a atu100 at the base of my vertical but had problems with wifi not? resetting properly, no doubt the high RF was not to its liking, no doubt fixable with the rite shielding but it was soaking up far too much time.? I ended up with a modified version of the Uart firmware interfaced with a pro-mini talking back to the shack raspberry pi and node red via modbus /rs485, totally reliable and wanted dc down there anyway.
73 Ian