RFM69HW Temp Management
Idea 1: Crystal Oven
Moteino or another micro
2 Resistors (10ohms)
2 resistors in parallel lying over the RFM69HW crystal acting as heaters
Mosfet is used to connect the resistors to ground (they are connected to VCC as well) to complete the circuit and heat up the crystal.
To control the temperature we use PWM to turn the mosfet on and off, the hotter we want the more often we turn the mosfet on.
The control system uses a PID loop
Using the PID v1 library on the arduino (using a moteino)
Measuring temperature with the onboard RFM69HW temperature sensor
Working well using a setpoint of 20C to test.
Idea 2: Adjust Freq to Temp
This section is more for documentation.
ideas/temp_management.txt · Last modified: 2015/01/06 22:18 by jcoxon