This is the RH-02 in action. Traffic rules state that the display can't be changed while moving, so the driver has a button to press whenever he stops. The RH-02 sensor thingie is under the window shade on the very left of the photo, the program writes the temperature as an integer to a file IFF it ...

Humidity is returned as relative. The rolling average filter is performed of 16 cycles. It is not possible to get the last cycle time from the dll but is is possible to get the cycle number. Your application could detect any hardware errors that you describe if the cycle number has not incremented ...

I am afraid that you didn't answer the question. humidity is returned as absolute or relative. It doen't make much difference around 25'c, but its 33'c in the shade today. So, it's a rolling average, over how many cycles? -------------------------- Error conditions: open port, read from it once ever...

rh-02 v1.1 manual, latest version as of yesterday. (The humidiprobe USB isnt available at such short notice here. Nor is your custom usb<->cereal dongle. I have found that some of them just don't meet the requirements to drive the rh-02!) vc++ crt application, home grown by yours truly, totally nodd...