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Replacement PIC chip with latest TCF Firmware
The original TCF-S focuser controller circuit includes embedded software or firmware to provide motor control, temperature compensation, and serial communications for an external control PC. From time to time the TCF firmware has been updated and improved to provide greater reliablity and feature enhancements. The firmware can be updated in older TCF controllers by ordering and replacing the programmable PIC microcontroller. Replacement is easy for most users using simple hand tools. Because the PIC microcontroller is installed in a socket, no soldering is required.