Hi All
I had some problems with the Cheap I2C parallel port I2C bus reader.
The parallel port was overloading the I2C bus, causing bad data and the
windows program not to work properly.
If anyone else has the same problem, they can fix it by using a buffer chip
between the I2C bus and the parallel port.
I used a CMOS 4050 hex buffer chip and am now not having any problems.
I wired it up as shown below: ( hope the cct comes out OK on email )
Parallel
Port
2------|>|-----------|
3------|>|-----------|
4------|>|-----------| _______________________
5------|>|-----------| | __________ |
|_________|___1|Vdd |16__ |
13_________________________2| |15__| |
SCL____3| |14______|
4| |13__|
__5| |12_______ Pin 12
(Parallel Port)
|__6| |11_______SDA
___7| |10
25______________________|___8| Vss |9____
| |_________| |
| |
| 4050 |
|__________________|
If anyone is interested in the data I captured fro my AVC2410 I will email it
directly because I believe the list does not allow very large messages.
Best Regards
Trev
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