ET-58 User Manual

[Pierre]

(12-25-2024 07:46 AM)Marc van Lemmen Wrote:  Nice Work ! It looks good !

Hi Marc,

I sent your calculator addition photos to Miroslav.
Answer from him:

Quote:The USBASP interface is useful. When designing the calculator, I was limited by amateurish PCB fabrication by photoexposure and because I am not a proficient hardware engineer. I focused more on software and hoped that someone more proficient would implement better calculator hardware. But even Pajenicko stuck with my design and so the calculator design is not the best. I rather assumed when designing that the processor would be removable from the calculator, in a socket, and could be reprogrammed outside the calculator. This allowed, for example, to replace the processor with an ATmega88, which contains the ET-57 code. The top cover made it impossible to use the socket, it would not fit. In one variant I therefore had a hole cut in the top cover for the processor to fit in the socket.

I asked his permission to resume the English translation he had started.
I have his "green light" to rework the entire English version from the beginning. So work for the coming weeks...
Of course, advice, comments and help will be welcome in these coming weeks of brain storming.

Pierre