Latest development from me.......
Posted: 19 May 2014, 16:14
I have made a PCB for the Automation eTaps. This incorporates Piet's interface circuitry and Johann's smoothing components.
Its manner of interfacing with the eTap PCBs is simplified. No wiring changes whatsoever are required if adapting an existing eTap for Automation use.
The FV-1 module is plugged out and the 16 pin lead from this pcb plugged in, in its place. The FV-1 module is then plugged into the new PCB.
It then connects piggyback to the Arduino unit underneath and the Adafruit display on top. The display will require spacing to clear the FV-1 module.
There is also an 8 way connector which brings out the 5 volt supply, the serial connection to the display and also the midi Tx/Rx connections.
The power for the Arduino is taken from the original board and smoothed using Johanns inductive/capacitive circuit as previously shown here.
Because of its connection manner there was an anomaly with the clip LED inasmuch as there was a small standing voltage left across it . This has been corrected by fitting a 6 legged opto-isolator.
The resistors are all SILs.
Pictures here.......
https://app.box.com/s/moshor1hvrvy3547720o
Its manner of interfacing with the eTap PCBs is simplified. No wiring changes whatsoever are required if adapting an existing eTap for Automation use.
The FV-1 module is plugged out and the 16 pin lead from this pcb plugged in, in its place. The FV-1 module is then plugged into the new PCB.
It then connects piggyback to the Arduino unit underneath and the Adafruit display on top. The display will require spacing to clear the FV-1 module.
There is also an 8 way connector which brings out the 5 volt supply, the serial connection to the display and also the midi Tx/Rx connections.
The power for the Arduino is taken from the original board and smoothed using Johanns inductive/capacitive circuit as previously shown here.
Because of its connection manner there was an anomaly with the clip LED inasmuch as there was a small standing voltage left across it . This has been corrected by fitting a 6 legged opto-isolator.
The resistors are all SILs.
Pictures here.......
https://app.box.com/s/moshor1hvrvy3547720o