2answers

[Others] Do you know how to record a change in value of a analog pin immediately ?

I'm using an arduino and the value in the analog pin needs to be monitored constantly at all points in the program . I’m aware of using a interrupt pin but it will only work when a pin goes high o...
2answers

[Others] Is there a type of switch that only have the short press function?

I have a momentary swith wired to a board which has a short press and a long press function. I only need the short press function and I cannot program out the long press one, so I need a hardware solu...
2answers

[Others] Some trouble with Opamp circuit

I am buidling this circuit to amplify a signal from a analog sensor. But for some reason, when I build the circuit on a breadboard I get 0v on the output of U1. The output of U2 works fine, so there i...
2answers

[Others] NTC thermistor and fixed resistor, which one has more advantanges?

Both NTC thermistor and fixed resistors can be used for limiting the inrush current. But which has more advantanges in this application?
3answers
1answers

[Others] How do I trigger 3 x SCRs in series with a microcontroller without a pulse transformer?

I know ways of triggering a single SCR using a microcontroller pin. How would you go about triggering multiple SCRs in series using a microcontroller since only the last SCR cathode is connected to gr...
7answers

[Others] Could I modify the soft touch switch to always on or bypass it?

I was planning on using a wifi socket to control this dehumidifier only to find out it's touch sensitive switch which defaults to off when plugged into power. Have you met this? Any way to bypass ...
  • answered Nov 05,2020
    by Gorge
1answers

[Others] Teensy 4.0 to emulate 27c512 eproms.

Do you think that this board is fast enough to emulate a 28dip 8bit eprom chip without any other peripherals, just read the Adress Pins (16 digital inputs), get the data from the Teensy ram and output...
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Ranking Name Answers
1 PCBWay Team 9
2 Xiaoyang Ma 1
3 Engineer 1
4 Christian Davies 1