My own PLC

 To control my 20l oven I decided to create my own primitive pcb on this prototype copper.

On board:

• ADC
• 4x relays
• esp01
• some primitive console

my layout looks more or less like this:

and it executes schematic looking more or less like this

The drawing may be chaotic, because it's prototype. Some elements may be missing, because I will solder them this way. Console will be soldered on separate board. For power supply I bought dime a dozen several of those 1A chargers.

Source of picture:

https://shopee.ph/Prototype-Paper-Copper-PCB-Experiment-Matrix-Circuit-Board-i.92393770.1603331285