1. P

    Seeking direction to make an led tachometer for an obd1 car

    Hello to those far more knowledgeable on the subject of electronics than I. I guess I'll tell you what I'm aiming for and go from there. Ideally, I've been wanting to create a led tachometer that at least resembles the one from a honda s2000, I'll include an image for reference, but to make it...
  2. J

    Fan Tachometer signal to on/off state

    Hi guys, I have a fan tachometer signal that is faster than my PLC can manage to read. Is there any readily available PCBs out there, that would be able to take the tach signal, analyse it, and provide a simple ON/OFF output based on the speed?
  3. B

    Help with LM3914 Tachometer w/ shift light

    Hello, I'm currently working on an LED bar tachometer using an LM3914, with the alarm flasher functionality being used as a shift light. I followed a circuit diagram from this post (https://forum.allaboutcircuits.com/threads/led-tachometer-lm3914.37656/) about setting the input to be 0-5v...
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