leds are fun!

I have a 24v led strip of around 20m and need to find a way to control it & if possible with my phone and nice effects on it!

Day 1

found a cheap & nice power supply -> https://www.ledkia.com/fr/acheter-alimentation-interieur-led/80262-bloc-dalimentation-slim-24v-dc-150w-625a.html?id_c=161894
then a nice mcu -> https://lcsc.com/product-detail/image/ESP-F_C19949062.html
found mosfets -> https://lcsc.com/product-detail/MOSFETs_HXY-MOSFET-IRF7201PBF-HXY_C22366576.html?s_z=n_IRF7201PBF

Diagramm!!!!

PCB

made the pcb ofc

around 4h for this day (the only one :sob:

Day 2

i re routed entirely the pcb and changed the esp for some reason

it now uses a ground pane and is smaller + has headers to program it!

spend around 8 hours on this redesign

Day +30 probably

Good news! I received my pcb :D
Bad news :( It exploded

anyway it was just a capacitor in the wrong order so i just had to desolder it + re solder it in the right way :p ( it didn't work 😭)

hours spent : 3hs

Day +31

Even if the capacitor was broken, i could still try to upload code to the esp, and see if the mosfets were working! didn't work as expected though... I had to bridge some wires and try some things but nothing worked and I packed my stuff to go to the us :) (undercity 👀)

hours spent : 2hrs

Day +65

undercity was really fun and now i needed to get my pcb working :)
i went to noisebridge (incredible place) and finished my pcb there! (after waiting 4 days for a 12 hours amazon delivery 😭)
I used a switch from a hackpad kit for the boot button, scrapped the pcb copper layer to remove some connections, added some other wires and uploading worked! I also got home assistant running on my laptop and it saw the esp32 as a esphome device with the right controls! only thing left was to try it irl, sadly had to wait even more time because my psu was only rated for 220v...

Day +68

Back in the land of regulations, i could test my project :D
And uh... it worked first try!!!!

you can see a demo here -> https://youtube.com/shorts/AF5SP4Fqyx4