KD4APP Uni_Trac 2000 ECP Device
I built this circuit for the ECP port on my Uni_Trac 2000 hardware. Each LED corresponds to the bits in the software.
To use this circuit with
Uni_Trac 2003 hardware you need to make the "ECP Open Collector
Modification" as noted on page 40 under "Z" of the "Uni_Trac
2003 Help and Getting Started Guide" - you basically remove two
resistors in the Uni_Trac 2003 hardware.