When my brother was doing his last year of high-school in electromechanics, he
came up with the idea of doing his final project using a homebuilt PLC instead
of the usual Siemens stuff. I built the electronics and came up with a
framework so he could easily implement his GRAFCET state machine for his part
sorting robot for the PICMICRO in the JAL programming language.
This was long before Arduino, long before 'all the cool kids were doing it',
and JAL was a free compiler for the affordable PIC microcontrollers. The
Arduino of its days.
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This is an alarm clock I built. It was very effective during the sort time I
used it, because I programmed it to play a very annoying tune through a
speaker. I actually started to wake up before the alarm went of, so other
people in the house didn't wake up from the annoying pitches it played.
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This is the first circuit I built with the PIC16F84.
It can best be described as an egg timer with only the timekeeping code
in place. It's got 4 pushbuttons, a character LCD and a buzzer.
I started building this clock because I wanted to build my own Alarm clock …
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In the year 2001 I became very interested in digital electronics, and wanted to
start experimenting with microcontrollers. When I was about to buy (expensive)
Basic Stamps, I found the JAL website, and read the Hello World material.
The JAL language targeted the Microchip PIC controllers.
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