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by trainman75
Sun Aug 04, 2019 1:03 am
Forum: Hardware
Topic: ESP32 programmer (USB->Serial) releasing it magic smoke.
Replies: 4
Views: 1483

Re: ESP32 programmer (USB->Serial) releasing it magic smoke.

Your schematic portion shows a short between V3 and the 5V rail, which will be sending 5V to the ESP32.
Also, Your net label for VCC is "3.3V/5.?", which seems like it's trying to be both 3.3 and 5. They need to be separate.
by trainman75
Fri Aug 02, 2019 12:57 pm
Forum: Hardware
Topic: ESP32 programmer (USB->Serial) releasing it magic smoke.
Replies: 4
Views: 1483

Re: ESP32 programmer (USB->Serial) releasing it magic smoke.

Having a look at the schematic here: https://github.com/rocketscream/CH340E-MB/blob/master/CH340E-MB.pdf , your smoke is probably coming out because you have V3 (3.3V) connected to VCC (which should be 5V). That will be sending 5V to the ESP32, where it only wants 3.3V. This does seem to be a diffic...

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