Will the EINSY power a PI3?
I have purchased a PI Zero W in anticipation of receiving my Mk3 next month but am thinking I might actually wait and connect a PI3 when information is published.
Can anyone definitively advise if the power off the EINSY board is sufficient to run a PI3?
If it isn't, I'll also need to buy a power adapter for the PI3 but would rather not go to this expense if it isn't required.
Re: Will the EINSY power a PI3?
Can anyone from Prusa advise please?
Re: Will the EINSY power a PI3?
Just looking at the power requirements listed on raspberrpi.org ( https://www.raspberrypi.org/help/faqs/#powerReqs ), the RPi 3 bare-board active current consumption is 3 times higher than the Zero. My experience using the RPi 3 is that it really wants a 2.5A power supply, and 3A if doing anything with HDMI. I would not try it.
Re: Will the EINSY power a PI3?
Just looking at the power requirements listed on raspberrpi.org ( https://www.raspberrypi.org/help/faqs/#powerReqs ), the RPi 3 bare-board active current consumption is 3 times higher than the Zero. My experience using the RPi 3 is that it really wants a 2.5A power supply, and 3A if doing anything with HDMI. I would not try it.
Looks like enough to power a Pi 2/3 Model B but not enough to power any additional peripherals from USB.
This company is going to sell a cable:
http://www.3dkc.net/mk3pi/pre-order-jumper-cable-for-raspberry-pi-23-to-einsy-rambo-for-octoprint
Re: Will the EINSY power a PI3?
I have purchased a PI Zero W in anticipation of receiving my Mk3 next month but am thinking I might actually wait and connect a PI3 when information is published.
Can anyone definitively advise if the power off the EINSY board is sufficient to run a PI3?
If it isn't, I'll also need to buy a power adapter for the PI3 but would rather not go to this expense if it isn't required.
Checkout https://shop.prusa3d.com/forum/original-prusa-i3-mk3-f30/pin-header-for-pi-zero-w-install-t12363.html and https://github.com/prusa3d/Original-Prusa-i3/blob/MK3/Printed-Parts/stl/rpi-zero-frame.stl and 
Here you can see that the EINSY provides 5V and GND
EINSY pin <--> What <--> Zero pin
2 5Volt <--> 5Volt <--> 4 5Volt
4 GND <--> GND <--> 6 GND
6 RX1 <--> COM <--> 8 TXD
8 TX1 <--> COM <--> 10 RXD
13 nReset <--> Reset <--> 15 GPIO 22
I don't get why
14 GND <--> ??? <--> 16 GPIO 23
should be connected?
Would make more sense to connect
3 nAC_Fault <--> Power panic <--> 7 GPIO 4
to be able to monitor power panic via a OctoPrint plugin.
At the end the EINSY RPi header pinout is not completely RPi Zero W compatible.