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Type: Posts; User: jkinkennon

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    I don't have anything to offer regarding really...

    I don't have anything to offer regarding really long SPI runs like 20' but I do have tons of experience running SPI between circuit boards from a few inches to three to four feet. I've had solid...
  2. Unless I am mistaken the board layout does not...

    Unless I am mistaken the board layout does not match the 4.1 schematic. When the trace between the rectangular pads is cut the Power In pin is isolated from the power regulator rather than USB...
  3. The ULN2803A darlington array is specifically...

    The ULN2803A darlington array is specifically designed to work with TTL or CMOS logic at 5v. It can also be used reliably at 3.3v to drive 5v devices. The solid state relays referred to are likely...
  4. If you have a need to switch 5v devices then...

    If you have a need to switch 5v devices then consider an NPN transistor like the 2N2222A or a darlington array such as the ULN2803A. Run them in open collector mode to ground one end of each device....
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    Today I did some adjustments to my encoder board...

    Today I did some adjustments to my encoder board for the Teensy 3.6 so that I can have the extra power regulator and the open collector IC, the ULM2803, changed to SMT versions. I will get a set of...
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    The Teensy 3.6 is easily up to the task of...

    The Teensy 3.6 is easily up to the task of running a large organ console. I use SPI boards that I have made offshore for a few dollars each. I'd be happy to provide documentation so anyone could...
  7. Oops, just sent my last serial enabled LCD to a...

    Oops, just sent my last serial enabled LCD to a client yesterday. Have more ordered. I will post within a week or so. I have a Teensy MIDI encoder project now that's solid for use with an organ...
  8. [posted] Simple Hauptwerk Display and USB-MIDI MIDI Monitor.

    I modified the MIDI InputFunctionsComplete sketch to format messages for a serial enabled LCD display and to display output from the fine Hauptwerk Virtual Organ software. The wiring is obvious from...
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