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    Progress

    One common example here.... https://www.electronicspoint.com/forums/threads/circuit-soldering-question.292691/reply?quote=1796280
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    Inverting a negative PWM signal to a Positive PWM

    Don't follow your description...perhaps a quick circuit?
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    Progress

    Once again, good move, only if using a pot, think about what will happen if it is turned to one end in particular and how to avoid a problem.
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    Circuit Soldering question

    Bit over the top with hobby electronics. Just my opinion. Not quite the same as 1lb iron, burner, 3/8" 60/40 solder/lead stick, and hydrochloric acid on galvanised iron.
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    Progress

    Good one. Now make one flash longer than the other.
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    Circuit Soldering question

    Normal approach to using the board shown above is to do the layout grid fashion. By that I mean similar to the circuit drawing itself. Components are placed and soldered to the individual pads and then bridge to the next connection by soldering adjacent circle pads and joining with a blob of...
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    Inverting a negative PWM signal to a Positive PWM

    Not familiar with your gear but normally a single transistor circuit will work as a signal inverter. Scroll down to your NOT circuit ...... https://electronicsclub.info/transistorcircuits.htm
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    Increase 12 VAC

    No I don't miss much. Seems the Op has gone into hiding anyhow.
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    Increase 12 VAC

    It's only an intercom. Needs more information on the specs of the unit and cable size used. Reference to ac voltage drop ...... https://www.jcalc.net/voltage-drop-calculator-as3008
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    Common ground

    Show how you did your common ground and other items. i.e. show complete circuit.
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    TVS Transient Voltage Suppressor

    First thing came up on Google search.....amazing...
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    RF keyfob & arduino.

    The Arduino itself is not a receiver. Receiver is an add on device and the Arduino is coded to accept whatever it outputs and then do whatever. Having said that there are new variants with receiver modules but not directly compatible with your key fob as far as I am aware. Many Arduino rf...
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    Tesla Coil Kit - help needed

    I don't believe anyone here would be prepared to stick their neck out and provide information whereby you could assemble this thing, regardless of any assurity you may provide. There is a good reason why details are not broadcast on the web. 12Kv @30mA is lethal stuff and your final words...
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    measuring time and distance

    You're not going to get accurate distance readings from within the moving vehicle without fixed external reference points.
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    measuring time and distance

    Line on the ground don't move no matter how many horses....:)
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    Boost converter output voltage being limited by led current draw?

    I'd be giving these a wide berth and spend the money on the driver designed for the LED strip. Too many unknowns in your specs.
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    What is the ic in this NPF970 lipo usb battery?

    Oooo...bet that got your attention.:eek: Not good to go shorting out electronics.:oops: Possibly a proprietary line product from the battery manufacturer if none visible on the net. Something to do with battery protection I imagine. Quite possibly took out other bits at the same time that are...
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    measuring time and distance

    You already have the distance @1/4 mile. 2 Microcontrollers (preferably)...Arduino of any type would cover the requirement. Pickup sensor at the start to detect green light on-time, ideally hard wired. Pickup sensor at the 1/4 mile mark to detect when crossing the line and shut down the timer...
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    Weird Harley starter solenoid issue

    I suspect the Op's unit is similar to the one below. Shows the solenoid operation as I explained in #5 above. Perhaps note the video the Op posted comes from a different post by someone from way back in 2013 and may not be a good representation of the Op's gear or problem. Reference starts at...
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    Nichrome wire heat up

    Found that with the foam cutter for r/c aircraft wings etc. where the blank size varied. Used a large transformer from an ice machine cutter circuit with a 400va dimmer on the AC input to control the output. Nichrome wire here varied in both gauge and length anywhere from perhaps 30mm to over 1...
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