I have a wemos d1 mini pro that the works fine if plugged in to the serial cable port(mini usb). Connects and I can access it with no issue. However, if I connect it via 5v to the 5v and ground pins, the blue light will flash on and off, but it never connects? Is this not an input pin? If it is not …

Definitely sounds like a problem with your 5V power supply. What can you tell us about that? Might be worth trying a large cap, e.g. 100uF+, to the 5V pin close to the Wemos.

Wemos d1 mini pro will not connect when powered via 5v pin

Projects General Guidance

Brazilino November 11, 2021, 12:13pm 12

This might help:

Topic		Replies	Views
WiFi issue when i power Wemos D1 Mini via 5v pin General Electronics	21	5436	May 6, 2021
Powering Wemos D1 Mini ESP via 5V pin General Guidance	7	59048	May 5, 2021
[Solved] Wemos D1 Mini via external 5V power supply General Guidance	6	46838	May 5, 2021
Wemos D1 Mini USB not Functioning General Electronics	5	3633	May 6, 2021
Seltsames Problem mit einem Wemos D1 mini Pro Deutsch	3	869	May 21, 2023

Wemos d1 mini pro will not connect when powered via 5v pin

Related topics