|Keywords: USB, LPT, parallel, parallel port, printer port, converter, adaptor|
|To USB2LPT — Overview|
Despite some changes in pin assignment between Rev.2 and Rev.3, the same firmware runs on Rev.2 upto Rev.4. The firmware branches and patches itself for the various differences. This eliminates the need to me as programmer to update too many firmware versions.
The Windows driver and firmware you can find at the page above, and some hints how to use.
No errors known, but:
|SJ1||Assignment of pin 25 of D-sub female connector|
|right connected||Pin 25 to ground (default)|
|not connected||Pin 25 unconnected|
|left connected||Pin 25 to 5 Volt (or 3,3V if SJ4 is right-connected)|
Instead feeding 5 V directly, a self-rearming fuse like Reichelt PFRA040 is recommended
|SJ2||Deactivation of boot EEPROM|
|not connected||EEPROM active (connected to microcontroller)|
|connected||EEPROM disabled (SDA pulled LOW)|