Powering the Nodemcu
Posted:
Fri Jan 03, 2020 11:33 amby ob2s
I see online the many options to power the nodemcu, but I wondered if I used 12vdc < 800ma connected to VIN and G, will I still be able to render 5v @ VU ? I have a 5v relay connected there.
Thanks
Re: Powering the Nodemcu
Posted:
Thu Jan 30, 2020 2:08 pmby mioim
Hi ob2s
Did you find it out? I am thinking on different ways to power my NodeMCU V3 from a MEGA 2560 and connect them via I2C but I am still not sure about how to control 5V and 3V sensors and if the NodeMCU can be powered with 12V <800mA and provide 5V at VU, I might replan my project.
I think I read somewhere that VU provides 5V from the USB, but I have never check it by myself
Re: Powering the Nodemcu
Posted:
Mon Feb 03, 2020 4:22 pmby ob2s
mioim wrote:Hi ob2s
Did you find it out? I am thinking on different ways to power my NodeMCU V3 from a MEGA 2560 and connect them via I2C but I am still not sure about how to control 5V and 3V sensors and if the NodeMCU can be powered with 12V <800mA and provide 5V at VU, I might replan my project.
I ended up using a cheap buck converter (dc2dc) to connected the 12v adapter.