# Envirophat 3 of 4 i2c **URL:** \ **Category:** Support\ **Created:** [May 13, 2017, 2:16am UTC](https://forums.pimoroni.com/t/envirophat-3-of-4-i2c/4783 "2017-05-13T02:16:55Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Niro](https://avatars.discourse-cdn.com/v4/letter/n/bb73d2/32.png) [@Niro](https://forums.pimoroni.com/u/Niro)\ **Post date:** [May 13, 2017, 2:16am UTC](https://forums.pimoroni.com/t/envirophat-3-of-4-i2c/4783/1 "2017-05-13T02:16:55Z")
Hello, I have 2 Pi Zero’s, both with male hammer headers installed and an Envirophat with a female hammer header. When I connect the Envirophat to either pi and issue i2cdetect -y 1, i only see 3 of the 4 sensors. 29 1d 49 If I run an example script or issue something like: sudo python from envirophat import light the leds on the Envirophat turn off and I get an error that seems to be looking for 0x58 in [bmp280.py](http://bmp280.py) and throws an I/O error. Running fully updated Raspbian. My pin headers look flush and solid, and it doesn’t seem to matter which pi i plug it in to. Any ideas? TIA ---
**Author:** ![pi2003](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/pi2003/32/1613_2.png) [@pi2003](https://forums.pimoroni.com/u/pi2003)\ **Post date:** [May 13, 2017, 7:32am UTC](https://forums.pimoroni.com/t/envirophat-3-of-4-i2c/4783/2 "2017-05-13T07:32:50Z")
Can you have a look under where it says temp on the board at the silver component with a hole in it and check it looks alright and the same with the supporting components around it. It may also be benificial if you post a picture of the whole board. Thanks Will ---
**Author:** ![jon](https://avatars.discourse-cdn.com/v4/letter/j/3bc359/32.png) [@jon](https://forums.pimoroni.com/u/jon)\ **Post date:** [May 14, 2017, 8:04am UTC](https://forums.pimoroni.com/t/envirophat-3-of-4-i2c/4783/3 "2017-05-14T08:04:18Z")
Please contact [support@pimoroni.com](mailto:support@pimoroni.com) so that we can process a replacement for you. :-)