# Pi Zero W power on **URL:** \ **Category:** Picade\ **Created:** [March 8, 2017, 8:29pm UTC](https://forums.pimoroni.com/t/pi-zero-w-power-on/4213 "2017-03-08T20:29:54Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![pezholio](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/pezholio/32/2137_2.png) [@pezholio](https://forums.pimoroni.com/u/pezholio)\ **Post date:** [March 8, 2017, 8:29pm UTC](https://forums.pimoroni.com/t/pi-zero-w-power-on/4213/1 "2017-03-08T20:29:54Z")
Hi, After getting my Picade HAT set up on a Pi 3, I thought I’d see how it fared with my new shiny Zero W (my Pi 3 is currently being used for [another project](http://medium.com/@pezholio/quantified-boy-726e9558594f#.c0e5v5rg0)). It mostly seems to work, however, while the power on / off button turns off fine, I can’t seem to get it to turn on. I’ve had a look in the source on Github to see how everything fits together, but I’m assuming the on part of the on/off functionality is hardware related. Any ideas? How well tested is the HAT with Pi Zeroes? ---
**Author:** ![RogueM](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/roguem/32/311_2.png) [@RogueM](https://forums.pimoroni.com/u/RogueM)\ **Post date:** [March 8, 2017, 9:00pm UTC](https://forums.pimoroni.com/t/pi-zero-w-power-on/4213/2 "2017-03-08T21:00:00Z")
[quote=“pezholio, post:1, topic:4213”] How well tested is the HAT with Pi Zeroes?[/quote] There was as much testing done on zeros as constitutional compliance checks for a Trump’s executive order… none. That said there is no RetroPie image compatible with the Zero W currently, so I assume you are using a heavily hacked distro? ---
**Author:** ![pezholio](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/pezholio/32/2137_2.png) [@pezholio](https://forums.pimoroni.com/u/pezholio)\ **Post date:** [March 9, 2017, 9:12am UTC](https://forums.pimoroni.com/t/pi-zero-w-power-on/4213/3 "2017-03-09T09:12:00Z")
> That said there is no RetroPie image compatible with the Zero W currently, so I assume you are using a heavily hacked distro? Nah, I installed the latest release of Raspbian, and then installed Retropie manually over the top. After a bit of fiddling it worked perfectly! (apart from the aforementioned power on issue). Is there any reason why it wouldn’t be working? I assume the pin layout is the same across all Pis now? (I know it did change in the early days) ---
**Author:** ![RogueM](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/roguem/32/311_2.png) [@RogueM](https://forums.pimoroni.com/u/RogueM)\ **Post date:** [March 9, 2017, 10:14am UTC](https://forums.pimoroni.com/t/pi-zero-w-power-on/4213/4 "2017-03-09T10:14:48Z")
in theory there is no reason it wouldn’t work on a Pi zero W. However if something is astray in the firmware (and there has been a couple of concerns raised about it in recent days) then I guess that it could fail. You could try to add the following to your `/boot/config.txt` file, although I suspect that won’t help: ``` dtoverlay=gpio-poweroff,gpiopin=4 ``` Also, make sure the 1-wire interface is not enabled, as it uses the same pin and I guess theoretically it could be what prevents the pin state to be pulled low. ---
**Author:** ![pezholio](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/pezholio/32/2137_2.png) [@pezholio](https://forums.pimoroni.com/u/pezholio)\ **Post date:** [March 9, 2017, 10:59am UTC](https://forums.pimoroni.com/t/pi-zero-w-power-on/4213/5 "2017-03-09T10:59:11Z")
Oh, I’m a huge dumbass! I had the micro-USB power supply plugged into the Pi, rather than the HAT, so NO WONDER it wasn’t switching on! Sorry! ---
**Author:** ![RogueM](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/roguem/32/311_2.png) [@RogueM](https://forums.pimoroni.com/u/RogueM)\ **Post date:** [March 9, 2017, 1:07pm UTC](https://forums.pimoroni.com/t/pi-zero-w-power-on/4213/6 "2017-03-09T13:07:37Z")
I will tell you a secret: I did the exact same thing when I was helping @gadgetoid get the poweroff/wake thing going… I was 500 miles away and somehow he figured it out ha! ---
**Author:** ![pezholio](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/pezholio/32/2137_2.png) [@pezholio](https://forums.pimoroni.com/u/pezholio)\ **Post date:** [March 9, 2017, 1:20pm UTC](https://forums.pimoroni.com/t/pi-zero-w-power-on/4213/7 "2017-03-09T13:20:00Z")
As long as it’s not just me! :)