Env Tail - i2c error -2: TRANSMIT_SELECT_ERROR

Hardware
1

I picked up a Tails Kit at Maker Faire Bay Area, and finally found some time to have a play. After a little difficulty getting it up and running (failed BlinkUp first attempt, IDE not working until I’d registered the Imp), I tried to get the Env Tail (rev 2 20141111) up and running, using the sample projects as a guide. I haven’t been able to get either the temp/humidity or the pressure sensor to work - both give an i2c -2 error (TRANSMIT_SELECT_ERROR), and the pressure sensor (LPS25H) additionally gives this trace:
2015-07-04 20:09:32 UTC+12 [Device] ERROR: I2C read error: -2
2015-07-04 20:09:32 UTC+12 [Device] ERROR: the index ‘0’ does not exist
2015-07-04 20:09:32 UTC+12 [Device] ERROR: at enable:87
2015-07-04 20:09:32 UTC+12 [Device] ERROR: from init:47
2015-07-04 20:09:32 UTC+12 [Device] ERROR: from constructor:42
2015-07-04 20:09:32 UTC+12 [Device] ERROR: from main:11

I haven’t yet dug out my logic analyser to see what’s actually going between the April and the Env Tail, but has anybody experienced similar issues and got any suggestions?

2

Sounds like either a connection issue or the I2C bus is stuck? A logic analyzer will definitely show that but if you have problems we can swap the board out for another one.

Does the neopixel tail work ok?

3

The Neopixel tail works fine. I still haven’t had a chance to dig out the logic analyser, but I’ll report back when I do.

4

I’m experiencing the same exact issue with my env tail. My neopixel tail also works fine. Just wondering if pauln had come up with a solution or determined if the env tail was defective. I noticed a few dry solder joints on mine, I touched them up but still no dice and the same error messages as pauln above.

5

If you contact info@electricimp.com we can sort out a replacement for you.

6

Thank you Hugo.