No data shown before calibration (Update.sh which is into https://github.com/Altitude-Tech/Sensly_Install project)

[shihlinlu]

Followed all instructions as shown on Instructables: http://www.instructables.com/id/Sensly-Hat-for-the-Raspberry-Pi-Air-Quality-Gas-De/.

After the Raspberry Pi restarted and $ i2cdetect -y 1 , no data is shown in 05 and 76 positions.

I have sent several emails to the Altitude Tech team with no response. I believe this might be a faulty sensor issue than with the code.

[frazerbarnes]

I have let my colleagues know about the issue. Please email sam@altitude.pw and he should be able to help resolve your problem.

[Sam-AlteredCarbon]

Hi shihlinlu, if you could email me directly at sam@altitude.pw I can help you troubleshoot the problem you are having with obtaining data.

[shihlinlu]

Thanks for the update. I have sent an email.

[gitboy122]

Same issue here altitude guys plz gelp

[phgachoud]

@shihlinlu did you solve your problem?? I dont understand your issue description...

[shihlinlu]

@phgachoud No, I have not resolved the issue. No data was being calibrated as shown in the instructions link. I received a replacement sensor, but have not had time to test it again. Were you able to calibrate the sensor and collect data?

[phgachoud]

the calibration script seems fixed checkout the gpio_calibration_fix branch and issue comments I let you check it, test it and accept or not my pull request on master branch

…

On Nov 13, 2017 20:39, "Shihlin Lu" ***@***.***> wrote: @phgachoud <https://github.com/phgachoud> No, I have not resolved the issue. No data was being calibrated as shown in the instructions link. I received a replacement sensor, but have not had time to test it again. Were you able to calibrate the sensor and collect data? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#4 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ALBUDLRtMjG3J8I_434M5CMTh7xXVQr2ks5s2JrogaJpZM4OE9ZF> .

[gesaleh]

@phgachoud I pulled your fix it works for the calibration but the data collection still fails with the same error

python Sensly.py
2017-11-14 22:45:43.459 DEBUG Sensly - <module>: start of script
2017-11-14 22:45:43.462 DEBUG Sensly - <module>: debug test this is logged as debug level
 Sensly is warming up please wait for 15 mins

 Heating Completed
Traceback (most recent call last):
  File "Sensly.py", line 306, in <module>
    MQ7Rs_R0 = MQ7.Corrected_RS_RO( MQ7cmd, temperature, humidity, MQ7_t_33H, MQ7_t_85H)
  File "/home/pi/Sensly/Sensors.py", line 104, in Corrected_RS_RO
    correctedrsro = rsroCorrPct * (self.Get_RSR0Ratio(cmd))
  File "/home/pi/Sensly/Sensors.py", line 63, in Get_RSR0Ratio
    self.rsro = float(self.Get_RS(cmd)/self.R0)
  File "/home/pi/Sensly/Sensors.py", line 58, in Get_RS
    self.RS = ((float(self.MaxADC)/float(self.Get_rawdata(cmd))-1)*self.RLOAD)
  File "/home/pi/Sensly/Sensors.py", line 46, in Get_rawdata
    self._device.write_byte(I2C_Addr,cmd)
IOError: [Errno 121] Remote I/O error

[phgachoud]

@gesaleh for this issue, please see ## my associated branch which is #6 dev/issue6_remote_IO_Error ## I'll try to keep this notation for the future...

1 branch = 1 issue fix

[phgachoud]

This issue is moved (closed & copied, github is unable to move issue) to the corresponding project because i2cdetect is an installation problem of the HAT, not a problem from gaz detections.
@shihlinlu see other issues to not mix up things... thx