So I have a WS2812B LED strip connected to my esp32. I currently have the led strip powered by a usb cable plugged into a phone charger brick. I also am powering my esp32 with a microusb cable plugged into another phone charger brick. I was wondering if I could splice the microusb cable with the usb…

Just check the current needed by the esp32, the WS2812B and what the USB can deliver.

The brick says 5v 1.6amps standard. I only have like 10 LEDS so that's like 600 milliamps (assuming 60 mA each) and the board most likely uses less than that even. I tried it while waiting for a response, and it doesn't seem to work. I may not have the wiring correct though. This is my current wiri…

There are no connection labels on the boxes. That reduces the usefulness to nearly zero.

Sorry, here's a more in depth diagram. Hopefully it's more helpful. [Untitled drawing (4)] I'm also not sure if it's possible to connect the 5v out of the usb cable straight into the vcc pin on the esp32. I haven't tried that yet, but because I only have 1 right now, I don't want to fry it.

Do you mean the Wemos ESP32 C3 mini? https://www.wemos.cc/en/latest/c3/c3_mini.html If so you can apply 5V to the VBUS pin. Not the 3V3 pin. I have one, similar project with 5V peripheral. What I did, plugged a USB wall adapter into the mini, then fed the 5V device from the VBUS pin. It seems ill…

so there is a VCC pin on the board, but I don't see a vbus pin on the board. I'm also not sure if the VCC pin would be able to take 5v. Here's the pinout of the board [image]

More info please. What is on the front of the board? Where did you get it? What ESP processor does it use (yes there are more than one...)?

[image] tanwirl123: I'm also not sure if the VCC pin would be able to take 5v. Apparently you blew past my words. It doesn't matter because you can likely obtain 5V from the Vcc pin, instead of feeding 5V to it. Do you have no documentation on the board?

Can I use esp32 and leds with same power cable?

Projects General Guidance

tanwirl123 August 9, 2022, 12:29am 7

Wemos D1 mini bluetooth + wifi

Topic		Replies	Views
ESP32-S3-Wroom-1 to power 10xWS2812b LEDs General Guidance	24	523	January 7, 2026
ESP32 eigene Spannungsversorgung und USB Kabel mit getrennten VCC Deutsch	3	224	December 20, 2025
ESP32 with LED strip, only works when connected to PC USB 3rd Party Boards	9	534	October 25, 2024
ESP32 dies a few time after being powered on General Electronics	28	450	September 24, 2025
Do's and Don'ts regarding the ESP boards 3rd Party Boards	36	396	June 18, 2026

Can I use esp32 and leds with same power cable?

Related topics