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2016-01-27 16:35:44 +01:00
this micro-controller firmware controls a vacuum fluorescent display (VFD).
the VFD has been salvaged from a Samsung SER6500 cash register.
it already included supertex HV518 VFD drivers.
2016-02-01 13:15:26 +01:00
the micro-controller used is a STM32F103C8T6.
the software uses the libopencm3 library.
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2016-02-01 13:15:26 +01:00
the firmware starts by testing all segments of the VFD, plays an animation, and finally displays the text typed in over the USB CDC ACM or USART1 ports.
2016-01-27 16:35:44 +01:00
the data is shifted out from the micro-controller to the drivers using SPI.
a timer will periodically refresh all parts of the VFD.
more details are available at