I’d like to show you a PCB I have created (my first for WLED). It is driven by a Wemos D1 Mini ESP32 clone and allows up to 8 channels of addressable LED strips. It contains a DC/DC converter and an 8-channel level shifter. 4 additional inputs (buttons, IR Remote) are available.
I had some instabilities with my Wemos clones since they contain a weak 5V/3V converter. So the board allows to power the ESP either with 5V (Jumper J1) or with 3V3 (add a cheap AMS117 module instead of J1).
The 2 capactitors are optional. C2 is recommended.
Let me know what you think about it and if you are interested in scheme and gerber files.
I have added a link to my shared project in the initial post. 8 Channels is exactly me need since I’m building a star with 8 independent beams in my kid’s room. Anyway it does not affect costs weather a 4ch or 8ch level-up converter is used (I bought this one for 1€) and the esp32 has plenty of GPIOs.
Before you order a PCB, note that I have tested the circuit on a prototype board but not have tested the PCB yet (waiting for the PCB to arrive). If you are from germany, I can send you one by mail (I ordered 5 since that’s the minimum quantity at JLCPCB).