# Skywriter + pi Zero? **URL:** \ **Category:** Raspberry Pi\ **Created:** [May 10, 2016, 4:18pm UTC](https://forums.pimoroni.com/t/skywriter-pi-zero/2349 "2016-05-10T16:18:47Z")\ **Posts on this page:** 15\ **Page:** 1
**Author:** ![open](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/open/32/1033_2.png) [@open](https://forums.pimoroni.com/u/open)\ **Post date:** [May 10, 2016, 4:18pm UTC](https://forums.pimoroni.com/t/skywriter-pi-zero/2349/1 "2016-05-10T16:18:47Z")
Would Skywriter work on pi Zero or Pi 3? Thanks in advance. ---
**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:** [May 10, 2016, 4:46pm UTC](https://forums.pimoroni.com/t/skywriter-pi-zero/2349/2 "2016-05-10T16:46:15Z")
Yes. Both Skywriter HAT and pad work perfectly with both Pi Zero and Pi3. ---
**Author:** ![open](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/open/32/1033_2.png) [@open](https://forums.pimoroni.com/u/open)\ **Post date:** [May 10, 2016, 8:04pm UTC](https://forums.pimoroni.com/t/skywriter-pi-zero/2349/3 "2016-05-10T20:04:45Z")
Thanks. I appetite it. ---
**Author:** ![open](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/open/32/1033_2.png) [@open](https://forums.pimoroni.com/u/open)\ **Post date:** [May 10, 2016, 11:46pm UTC](https://forums.pimoroni.com/t/skywriter-pi-zero/2349/4 "2016-05-10T23:46:14Z")
What pins are need for the skywriter to work? ---
**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:** [May 11, 2016, 8:57am UTC](https://forums.pimoroni.com/t/skywriter-pi-zero/2349/5 "2016-05-11T08:57:55Z")
I’m assuming you are talking about the larger non-HAT version? not that it matters to answer your question but I see you are having trouble and it may help to be sure what harware you have. … So onto the connection, see the bottom of this page: > **[pimoroni/skywriter-hat](https://github.com/pimoroni/skywriter-hat)** > > skywriter-hat - Skywriter python libraries and examples Note that if you are wiring selectively the HAT version, for example via an external Black HAT, those pins would be the same. ---
**Author:** ![sandyjmacdonald](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/sandyjmacdonald/32/393_2.png) [@sandyjmacdonald](https://forums.pimoroni.com/u/sandyjmacdonald)\ **Post date:** [May 11, 2016, 9:40am UTC](https://forums.pimoroni.com/t/skywriter-pi-zero/2349/6 "2016-05-11T09:40:11Z")
There’s also a pinout on @gadgetoid’s excellent pinout.xyz [here](http://pinout.xyz/pinout/skywriter_hat). ---
**Author:** ![open](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/open/32/1033_2.png) [@open](https://forums.pimoroni.com/u/open)\ **Post date:** [May 11, 2016, 2:04pm UTC](https://forums.pimoroni.com/t/skywriter-pi-zero/2349/7 "2016-05-11T14:04:52Z")
Thanks for the reply. The reason I am using a hat is due to size constraints, I need to be able to position the hat and access other pins. Thanks for the info. I set up the hat with all pins to start and have an error. I may to re flash and start over. ---
**Author:** ![open](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/open/32/1033_2.png) [@open](https://forums.pimoroni.com/u/open)\ **Post date:** [May 11, 2016, 3:16pm UTC](https://forums.pimoroni.com/t/skywriter-pi-zero/2349/8 "2016-05-11T15:16:10Z")
To clarify the pin out is: BCM 2 BCM 3 BCM 17 BCM 27 ? ---
**Author:** ![sandyjmacdonald](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/sandyjmacdonald/32/393_2.png) [@sandyjmacdonald](https://forums.pimoroni.com/u/sandyjmacdonald)\ **Post date:** [May 11, 2016, 3:17pm UTC](https://forums.pimoroni.com/t/skywriter-pi-zero/2349/9 "2016-05-11T15:17:15Z")
Yes, that’s correct. ---
**Author:** ![open](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/open/32/1033_2.png) [@open](https://forums.pimoroni.com/u/open)\ **Post date:** [May 11, 2016, 3:17pm UTC](https://forums.pimoroni.com/t/skywriter-pi-zero/2349/10 "2016-05-11T15:17:47Z")
Thank you. Much appreciated. ---
**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:** [May 11, 2016, 3:21pm UTC](https://forums.pimoroni.com/t/skywriter-pi-zero/2349/11 "2016-05-11T15:21:02Z")
the problem with wiring up the HAT version, at least without a Black HAT (should that be the case for you), is that not all ground pins are necessarily connected. I would give pin 6 a shot, it’s probably a valid option. ---
**Author:** ![open](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/open/32/1033_2.png) [@open](https://forums.pimoroni.com/u/open)\ **Post date:** [May 11, 2016, 3:31pm UTC](https://forums.pimoroni.com/t/skywriter-pi-zero/2349/12 "2016-05-11T15:31:32Z")
I am not familiar with a ‘Black hat’ ---
**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:** [May 11, 2016, 4:51pm UTC](https://forums.pimoroni.com/t/skywriter-pi-zero/2349/13 "2016-05-11T16:51:42Z")
not to worry, it’s just that the ground plane in those is fully connected, so you don’t have to worry about how to supply power and ground from the Pi. If you’re connecting all pins in the first instance anyhow, it won’t matter, just noting that when you start being selective, after getting the HAT running that way, be aware that it _can_ be tricky when it comes to ground. ---
**Author:** ![open](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/open/32/1033_2.png) [@open](https://forums.pimoroni.com/u/open)\ **Post date:** [May 11, 2016, 5:14pm UTC](https://forums.pimoroni.com/t/skywriter-pi-zero/2349/14 "2016-05-11T17:14:42Z")
Oh , now I know. thanks. I appreciate it. ---
**Author:** ![open](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/open/32/1033_2.png) [@open](https://forums.pimoroni.com/u/open)\ **Post date:** [May 11, 2016, 7:11pm UTC](https://forums.pimoroni.com/t/skywriter-pi-zero/2349/15 "2016-05-11T19:11:19Z")
would you know why I am getting this error? /usr/local/lib/python2.7/dist-packages/skywriter.py:34: RuntimeWarning: This channel is already in use, continuing anyway. Use GPIO.setwarnings(False) to disable warnings. import skywriter File “/usr/local/lib/python2.7/dist-packages/skywriter.py”, line 488, in i2c.write\_i2c\_block\_data(SW\_ADDR, 0xa1, [0b00000000, 0b00011111, 0b00000000, 0b00011111])