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  1. Looking for LED driver with individual PWM for Teensy

    Hello all. I'm wondering if anyone here can recommend an LED driver that has individual PWM outputs like the TLC5940. Unfortunately the TLC5940 DIP package is no longer available or else I would use...
  2. Thread: TLC5940 voltage

    by djex81
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    239

    Thanks for the reply. Doing a quick search it...

    Thanks for the reply. Doing a quick search it does look like that's 60mA per channel which is completely fine in my case as I'm not using LEDs that draw any more than 25mA each. Like you suggested...
  3. Thread: TLC5940 voltage

    by djex81
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    2
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    239

    TLC5940 voltage

    Hello everyone. I have a question with using the TLC5940 LED driver with a Teensy 3.6 as outline here https://www.pjrc.com/teensy/td_libs_Tlc5940.html . On that page it says to use 5 volts on the...
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    Right I understand this but how would I access...

    Right I understand this but how would I access MIDI from another class? or in my case globally? I've tried to set it up in a header file and include that header where I needed but I get multiple...
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    Access MIDI instance from another class

    I'm using the MIDI.h library. After using MIDI_CREATE_INSTANCE(HardwareSerial, Serial1, MIDI) how do I access the MIDI instance from another class? MIDI_CREATE_INSTANCE does not return an instance of...
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    Awesome thanks!

    Awesome thanks!
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    Oh wow I did not know this. Thanks for this info!...

    Oh wow I did not know this. Thanks for this info! Is there anywhere this explains this in more detail? I may want to have the option to disable this feature if it causes issues.
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    MIDI Out as also MIDI Thru?

    Hi I'm following the circuit here: https://www.pjrc.com/teensy/td_libs_MIDI.html for Teensy 3.x. Many MIDI controllers and synths today use the MIDI Out port as the MIDI thru. I am trying the achieve...
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    Filter and Pull-Up Location

    Hello All. I have a quick question. I'm designing a MIDI controller that will have several mechanical rotary encoders. For mechanical encoders it's recommended to use a simple filter and pull-up...
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    Thank you Paul for the detailed reply it was very...

    Thank you Paul for the detailed reply it was very helpful. Your right now that I think about it a bit more the Teensy is not slow at all. I'm use to working with slower chips and optimizing code to...
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    I believe the LATCH pin in the code is labeled as...

    I believe the LATCH pin in the code is labeled as LOAD on the schematic. They are using a regular Digital pin for the LATCH / LOAD. Also I've taken a look at your schematics, will your method work...
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    Interesting. So shiftin() seems like the way to...

    Interesting. So shiftin() seems like the way to go for performance. I was concerned polling 57 inputs (64 using 8 x 75HC165) would take too long and possibly miss button presses? So basically I would...
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    I need to detect around 57 button inputs. So I...

    I need to detect around 57 button inputs. So I will have 8 x 74HC165. I'm looking for a way to poll the inputs quickly and I figured if I could do it using SPI that I could avoid slow downs. I am now...
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    SPI pin as Digital?

    Hello, I'm looking to use SPI for my 74HC165 chips to detect button presses using the schematic and code found here: http://www.gammon.com.au/forum/?id=11979

    The schematic on that site only uses...
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    That is a great idea. Never thought of reading...

    That is a great idea. Never thought of reading all 8 in parallel. I would guess that handling multi button hold / presses should work? At max I would need to detect two buttons pressed / held at the...
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    Thanks for the ideas! and yes I will need to be...

    Thanks for the ideas! and yes I will need to be able to detect multiple button presses at once. There are many functions that will be hold one button while pressing another.
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    60+ Button Input - Best Approach?

    Hello All, I am currently building a MIDI sequencer and have the code pretty well complete. I am better with programming than the electronics side of things. However this has not stopped me yet. I'm...
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    Thank you for the PDF link. I've read through...

    Thank you for the PDF link. I've read through chapter 4 and plan to read 5 and 8. Already I can see that is it not as simple as capturing the data and replaying it. I did not know USB is polled by...
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    USB Packet Record & Replay With Teensy 3.2?

    Hi, I have an Teensy 3.2 . I've done quite a bit of searching but could not find a clear anwser. I'm hoping someone here will be able help. What I want to do is record a USB packet of a keypress from...
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