>> Can anyone come up with a real life project for someone (me) who would like
>> to learn the HC11 using the EVB?
>> It shouldn't be simple but require some thought and effort. However,
>> nothing so complicated that there is no reasonable expectation of success.
>> Maybe someone could suggest something they've done in the past. After
>> completing it I would be willing to share my notes on my solution.
>We used the HC11 to count the number of times 6 photoeyes were tripped
>and then allowed a PC to poll it for these counts. We have the
>photoeyes mounted over a conveyor and count product as it goes by.
TI makes a very inexpensive Light-to-frequency chip (about $2 in low
volume) which interfaces nicely to the pulse accumulator on the HC11.
You could make all kinds of products with this combination. For
example, in dish washers, they look at the clarity of the water to
determine if all the soap has been rinsed away. I recently did a
project for a company that measures H2S in PPM concentration. The
reflected laser diode light from lead-acetate tape which turns from
white to brown when exposed to H2S. I hope these ideas gets your
creative juices flowing. Good luck!
SACO Electronic Products.