Can't make the Skywriter Hat working

Support
1

Hello,
I’m not able to make my Skywriter Hat working. When I do sudo python3 test.py, I have this error:
Traceback (most recent call last):
File “test.py”, line 7, in
@skywriter.move()
File “/usr/local/lib/python3.5/dist-packages/skywriter-0.0.7-py3.5.egg/skywriter.py”, line 455, in move
’’'
File “/usr/local/lib/python3.5/dist-packages/skywriter-0.0.7-py3.5.egg/skywriter.py”, line 526, in setup
OSError: [Errno 5] Input/output error

And sudo i2cdetect -y 1:
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: – -- – -- – -- – -- – -- – -- –
10: – -- – -- – -- – -- – -- – -- – -- – --
20: – -- – -- – -- – -- – -- – -- – -- – --
30: – -- – -- – -- – -- – -- – -- – -- – --
40: – -- – -- – -- – -- – -- – -- – -- – --
50: – -- – -- – -- – -- – -- – -- – -- – --
60: – -- – -- – -- – -- – -- – -- – -- – --
70: – -- – -- – -- – --

I’m running on a Raspberry Pi 2 with a fresh install of Raspbian. Can you help me ?

2

i2c turned on? It’s showing nothing detected.

3

Yes. It is.
Strangely, I just tried on my Raspberry Pi Zero W with the same SD card, and it’s working! Maybe it was the Raspberry Pi.

4

Kind of sounds like its an issue with that other Pi?

5

Yes. I think so.
If it’s working on one Pi, it’s will be fine for me. Thanks for all!

6

Just curious, what model Pi’s are they, the one that works and the one that doesn’t? Any hammer headers in the mix, or headers you soldered on your self?

7

Model that works: Raspberry Pi Zero W, Headers soldered by myself
Model that doesn’t work: Raspberry Pi 2, Pre-soldered headers

8

Ok, that rules out a soldering issue. I asked because I’ve seen a few issues with the hammer headers, and some people aren’t so good at soldering.