DIY Atmel Soldering Station ( 907 & Hotair )

there is a v4.0 available to used :
   • DIY Atmel Soldering Station #Part2  

all you need to know can be found at : https://github.com/warehouseElc/Solde...

this is a third version of project not modded and still original from sasiskas just change the spi to i2c display.
v 2.0 is from alexander.
https://www.hackster.io/sfrwmaker/sol...
and was modded by sasiskas channel in this video    • How to make a Soldering Station DIY  
i'm going to make this more valueble, compact, and easy to repair.
i've already mod several function and use 1,3 oled display, so wait for it.
like this video if you wanted v 4.0 and it'll be a full build.

why use atmel ?
its cheap and easy to debug.
so i use dual atmel for each controller.

why choose 907 not t12 ?
unfortunately the t12 still high for the price in my country and people stil use 907.
so i make this more valueable for everyone.

problem ?
for V 3.0 it running without problem.
but v 4.0 sometimes all controller get stuck after auto cooling down process, and more slower cause i use oled via i2c.
buck converter produce more heat so it need heatsink or just put fan near regulator.
i dont have osciloscope so i cant tell about any noise.

the code is fantastic complicated so i decide to share with you in next video.