sbfreddie
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    • sbfreddie
      David: You cannot use MTP with the Mac Finder as this is a MicroSoft protocol that has not been implemented on the Mac. However there are several apps you can download that will read this protocol, google is your friend. Regards, Ed
    • sbfreddie
      The series resistor is placed between the IC pin that drives the signal voltage, and the rest of the signal trace. (If we put the series resistor on the other side, near the input pin, we get reflections and other nasty stuff, because electrical...
    • sbfreddie
      VictorFS: I am often amused by people who see everything as a software solution. (I you only have a hammer everything is a nail) This type of solution in my option would best be to use a combination of hardware and software such as using a...
    • sbfreddie
      I agree with most of this wholeheartedly, the only acception being since at least 1980 the DOD and other US government agencies requires very strong ESD immunity for just about everything you as a contractor creates for the agency. But most of...
    • sbfreddie
      sbfreddie reacted to AndyA's post in the thread Teensy 4.1 Digital Input Tolerance with Like Like.
      Ultimately the requirements depend on the exact nature of the signal, the environment and how paranoid you want to be. Obviously test conditions aren't the same as the real world but it gives you an idea of what it is reasonable to expect a...
    • sbfreddie
      Audiomath: My experience comes from the Aerospace world going back to the late seventies. Having worked on projects where EMP and other very fast transients were a problem, way back when we used transzorbs (which is a trademarked name for a very...
    • sbfreddie
      I just looked up the name of the library I used: UartEvent.h by Colin Duffy copyright 2015. A little less than 10 years ago. Regards, Ed
    • sbfreddie
      As I recall, the SerialDMAClass had 3 choices, fixed number of bytes, a specific character at the end of the block, and I can't remember the 3rd choice for the interrupt to be set. I choose fixed number of bytes which worked quite well for me...
    • sbfreddie
      I used DMA on the serial port to solve this type of problem 10 yrs ago on the T3.2. It used a set size of transfer and when each byte came in, it was automatically dumped into a buffer of bytes. When the number of bytes was completed the DMA...
    • sbfreddie
      Gentleman: I hope you understand how little 1.1 to 10 PicoFarads at 233MHz really is. This value could very easily be created by simply routing an etch close to power or ground. In the pictures above I see at least 10 to 30 pF of capacitance...
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