Hello, I'm having a hard time with TMP102 sensor.
Thanks to Ytai code snippet conversion and register reading is correct. What is incorrect *seems *to be the sensor itself. Analog thermometer is used as a reference, and I get errors from 6° to 1,5° in excess on the tmp102, In "ambient temperature" area (from 10°c to 25°c) I tested with another TMP102 sensor (also purchased from sparkfun, thus with a different pin layout), the same weird behavior. The error seems to be changing over time (As if the sensor needed 30+ minutes to stabilize) but never disappears. At the time being I have set a "-1.5" correction. The sensor is read every 5 seconds. I tested the same tmp102 sensor on a arduino board (with a very fast loop), and the readings are correct (well, within 0.2°c of the reference thermometer). I wonder If the arduino fast loop helps the sensor reaching operational conditions (let's call that warming up ?), and the 5 sec loop on the android does not allow tmp102 to work properly. Or maybe my ioio power supply is interfering (8 volts, 1000mah) with the tmp102 (sensor VCC is plugged to 3v on the board itself). I'm working on a thermostat, temperature reading reliability is rather important. I ordered an MCP9808 sensor to compare readings. Any idea, testing pattern or any "reliable" sensor to recommend ? (BTW Ytai : Many, many thanks for your *great* work. ) -- You received this message because you are subscribed to the Google Groups "ioio-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/ioio-users. For more options, visit https://groups.google.com/d/optout.
