3/8/2026 5 PM - 30min quick sketch of what i will do

take ac > make dc>give to microconrtoller>
microcontroller check if it got any commands

if yes excecute
Else nothing
support 3 light 1 fan
some reseach too
and i will making it as fast as possible

3/8/2026 6 PM - chosse ts esp32 c3 wroom2

it has many gpio as much as i want
and wifi ofc else what am i gonna do
available in robu too (cuz i will self assemble it )
there goes a usb and no usb uart cuz c3 has native usb (NOT HID)
heres the schm nd datasheet
https://documentation.espressif.com/esp32-c3-wroom-02_datasheet_en.pdf

not much work done most of it is findingn

3/10/2026 - Complete schematic

Esp32 full section done(wifi)
The power section done
Esp32 to pc section done
Esp32 to relays done (with bc547)
AC to DC5v done
and component assignments also done
I might hand make the pcb if the cost get too high

3/12/2026 - pcb done

I did finish my pcb but i feel like its shit rn

I can defintly make it smaller

I will try to reroute it
and probably use thicker traces too
this was done 2days ago but i forgot to journal

3/15/2026 10 AM - Nicer routing

so i just rerouted this nothing more
i made the traces thicc made pcb bigger overall
and it can handle till 2amps at 240
that like okish for my application
i will use it to control lights anyways Lol
Honey Pie is what i am listening to

3/15/2026 1 PM - Rev 3 pcb

This time made
The Live lines more isolated
Better current capacity (5amp)
Better Cad models
Few holes Lol
3mm spacing b/t hot wires
got sanity checked from few ppl in Electronics
Made the Bom too!
probabistically,
The Input line can get fused due to over current but its only for few lights
But here you go

3/18/2026 3:10 PM - Readme Render Case

I made the case its p simple a simple explode animation js to see all the parts at a glance
made the bom its coming to 75 usd
For 5 bare pcb
The pcbs cost more becuase its 4 layet the at moment

BOM

work in fusion

3/18/2026 3:50 PM - ok after liek 40mins bom optimization

Got the cost down to 50usd from 75
sourced parts from lcsc and robu
yea
What do i even write here
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3/18/2026 4 PM - cad

added the cad models final few changes
git push
and stuff
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also writing the post lol