As part of a larger project, I want to be able to generate 10 or so PWM signals, with the duty-cycles under user control via Bluetooth from an Android phone. It looks like ESP32 Thing is just the ticket, being able to provide 16 PWM outputs and having BLE (and wifi) capability; I'm told that App Inventor (http://appinventor.mit.edu/explore) should make writing the Android app relatively easy.
But a tech person at Sparkfun suggested that it may not be easy to control the unit from Android, for some reason; I'm not clear why - it seems if the ESP32 has Bluetooth slave capability, that it shouldn't matter what the master is. But, I'm pretty naive on this stuff, having no experience with Arduino or Bluetooth.
I'd appreciate any opinions on this, and if I should consider a different approach. Thanks in advance !
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