K8055 Low Temp Op Limit

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1

Hello

I am using a K8055 board to automate an astronomy dome. The system has become balky and now does not read the azimuth encoder. The encoder is rated to -54 deg C. What is the low temp operating spec on the Velleman K8055?

Thanks

2

There should be no problems to operate below zero.

PIC microcontroller is specified to operating temperature of -40°C to +85°C.
Operational amplifier TLV274IN is specified to –40°C to 125°C
Transistor array ULN2803 operating ambient temperature range is –20°C to 85°C

You must avoid water condensation on the PCB due to temperature changes.
Maybe better to put the K8055 in a box.