January 13, 2015 at 05:10 PMJan 13, 2015 Hi, I have a temperature bricklet, however it has a strange behavior. I also have humidity and barometer bricklets, for these I use the callback method with a callback period at 1000ms (like in the Weather Station documentation). I do the exact same thing with the temperature but it can take up to a minute to trigger a measurement. Also, temperatures shown seem approx 2°C higher than it should be (the sensor is not close to a heat source). Is that normal ? Thank for your time and your help.
January 13, 2015 at 07:50 PMJan 13, 2015 Have you set the I2C Mode to slow? Maybe this helps. Temperature.set_i2c_mode
January 13, 2015 at 08:12 PMJan 13, 2015 Author Hum no... actually it's worse: no measurement at all.
January 14, 2015 at 07:57 AMJan 14, 2015 Does this only occur if all 3 sensors are connected? What happens if only temperature is connected? Is the temperature cable near EMI sources?
January 14, 2015 at 08:52 AMJan 14, 2015 A callback is only triggered if the value actually changes. So for example if you set a callback period of 1 second and the temperature stays the same for 30 seconds until it changes, you will only get the callback after 30 seconds. This is probably what you are seeing here. To try this out you can heat/cool the Bricklet rapidly. We do this to save bandwidth on the USB.
January 17, 2015 at 08:50 PMJan 17, 2015 Author Hi, Finally I got it working properly by re-flashing it...
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.