|
Looks like you are making progress Steve. What period is the peltier switching in and out over? Does adding PWM help? I thought this would just increase the time to cool down leading to a bigger variation in the temperature?
The other variable is temperature setpoint. I decided to target 10 degC as I've heard the noise is pretty low on the DSI II once you get below 15 degC and the peltier will always be able to achieve 10 regardless of the ambinet temperature here so I'll only need darks at one temperature. Have you tried the setpoint at a higher temperature to see if you get a more stable control?
Final question - I was trying to work out a way to make the temperature adjustment pot a panel mount that could be adjusted without a screwdriver - any ideas?
Peter
|