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Thanks to all, good suggestions that I'll keep up my sleeve. After a bit of playing round, came up with a pulse shaping circuit that it looks like will work. A 150n capacitor from the sense input to Vcc, and a 6K8 resistor from the input to 0v. The switch and a diode in series go between Vcc...

Thanks AJL, I'm contemplating just that. However, a software solution would be neater.

Hi, I have input from an anemometer head to a Teensy 4.0, it's a squarewave ranging in frequency from a few Hz up to about 30 Hz. Checking the switching on a scope, there is debounce apparent, but it's all inside a 15 microsecond window. Using the usual debounce tools available, with the timer...

Is there inbuilt functionality in any of the MIDI libraries for inverting the polarity of the MIDI OUT line?

Just in case this helps anyone else, I did some investigation on TimerOne on Teensy 4.0 following encountering some strange behaviour with the demo code referenced in my original post. It turns out that the maximum reliable value for the Timer1.initialize function argument is a bit over 50,000...

Thanks Mark, To my surprise the .h is most helpful. Well commented.

I started off with Timer1 with information from this page: https://www.pjrc.com/teensy/td_libs_TimerOne.html It got me going, but I need some more details, all my efforts to locate something have failed. I clicked the appropriate link at the bottom of the page, and it sent me to a generic...

Thanks so much Defragster. Your suggestion worked a treat. I first tried using a standard 1/2watt resistor as a 'loosener', that didn't improve things at all. Then I tried a fine gauge galvanised steel wire (not sure which one, diameter is a bit larger than the resistor), once that was done the...

Hi, I've soldered 0.1" pin headers into a new Teensy 4.0 so I can insert it into a 'push-in' prototyping board to create a hardware test platform. However hard I push, the device won't go in, I suspect the problem is simply the number of pins involved. Standard wired components such as resistors...

Sorry, this post is inconsistent. IGNORE. I can't see a way to delete it. I note the following in the documentation for Teensy4.0|USB|Serial: “The Teensy does not actually become a serial device until your sketch is running, so you must select the serial port (Tools -> Serial Port menu) after...

My application relies on configuration data residing in the CPU EEPROM. Is there a way that I can load it to the target directly through the IDE, rather than having to write code a both ends? The source data currently resides in a binary file, but that is flexible. Thanks for any info.