Search found 3 matches

by lbdroidman
Wed Oct 02, 2019 7:47 pm
Forum: Hardware
Topic: LDO for ESP32 DEVKIT V1
Replies: 2
Views: 8368

Re: LDO for ESP32 DEVKIT V1

The MCP1702 is possibly not big enough. Its spec shows 250 mA continuous, 500 mA peak. The ESP32 has a recommended minimum supply current of 500 mA, and indeed, it will get up there when the wifi is transmitting. A pretty common LDO for these is LM1117-3.3, which can supply 800 mA continuous. You ca...
by lbdroidman
Wed Oct 02, 2019 7:34 pm
Forum: Hardware
Topic: ESP32 stops working for no apparent reason in field
Replies: 15
Views: 19468

Re: ESP32 stops working for no apparent reason in field

Just want to add our preliminary findings. Looks like the main reason for this high count faulty units is incorrect technician board manipulation and some exposed pins (not a real problem with the ESP32). These units have been shipped to a location where technicians are doing connections to these b...
by lbdroidman
Wed Oct 02, 2019 6:35 pm
Forum: General Discussion
Topic: ESP32 power led start blinking at 2.2v at input Pin when 220V AC bulb on
Replies: 5
Views: 7168

Re: ESP32 power led start blinking at 2.2v at input Pin when 220V AC bulb on

According to your schematic, I'm kind of surprised that you didn't set something on fire or electrocute yourself. ARE YOU ABSOLUTELY CERTAIN THAT YOU ARE QUALIFIED TO BE PLAYING WITH A/C POWER? I would STRONGLY advise you to seek qualified assistance. Regarding your circuit; So there are a few thing...