protection. load shutdown if the temperature sensor data is not corre… #1
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…ct or unavailable. For work, you can only use the internal DS18B20 library. which returns zero if there is no data from the sensor. (This code does not work with other libraries.) To prevent an emergency, the code disables the load if there are no temperature sensor data.
Added support for MPU6050 gyro sensor
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Maybe instead disabling the load, use the pid_manual_power instead? This way there would be a degree of adjustment available. For instance if using this for some sort of heating in subzero environments, having the load on a low value is better than switching it off. |
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In fact I never understood what this PR was actually about. The proposal to assume that the value is invalid if it is zero is obviously flawed as zero is a perfectly valid value. In fact I have never seen a faulty sensor return zero, my experience is that no value is acquired at all, so after a time of PID_MAX_INTERVAL the power will revert to that specified for PID_MANUAL_POWER, which can be configured (or set) to whatever value is required. |
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MAX6675 returns zero if not connected |
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@Bournetoride how do you know whether the zero that it returns is a real value of zero or a fault? |
For work, you can only use the internal DS18B20 library.
which returns zero if there is no data from the sensor. (This code does not work with other libraries.)
To prevent an emergency, the code disables the load if there are no temperature sensor data.