Let's Control It

Hello all

I got my first selfdraw PCB 2 days ago an i would like to share it with you

2 x MCP23017 portextender for up to 32 extra IOs.

Each channel can be setted by jumper as Input or output.

as input there is also a jumper to set a 10k pulldown resistor.
as output there is ULN2803 transistor arrays wich can be used by internal 5V supply or external 3-30V by jumperselection.

All other ports of the ESP are also available.
by jumper you can use a 4,7k pullup resistor for each IO.

plus there is a grid for own applications including GND, 3.3V and 5V connector nearby.

Basicly i did try to make a "one fits all" PCB

So what do you think ? (well, it is my very first PCB )

Have a great day
Sascha





***right click "open picture in new tab"***

I can't see the images

i dont know why, but here is a workaround :

right click "open picture in new tab"

that's massive. looks like you'll be prepared for anything!

that was the goal

That's pretty cool! Will you be making it available for sale?

Well......a few i could sell now.....not 1000th of.

But if someone here needs one or two, please feel free to send me a PM

Have a great das
Sascha

Which program did you use to make the PCB? Would like to try and make a ESP8266 "motherboard" myself

i use "Easy EDA"

works perfect for me