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Electrical Engineering

Questions tagged [button]

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I want to simulate a push button with a little circuit. I'm using an IC 555 as a timer. The button is in another circuit (different device), pin A has 2.4 V and pin B is GND, it does activate if I ...
Panamanian's user avatar
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1 vote
4 answers
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I have a wireless and rechargable microphone, it has a button that needs to be pressed for two seconds. If I hold the button down for more than four seconds it turns off again. (So I cannot shorted ...
Panamanian's user avatar
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I have the circuit in the picture of a pushbutton interlock on a test bed setup that I'm experimenting with. I was hoping someone to show me how I would go about making another set of push button ...
Lynx Fan's user avatar
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0 answers
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As you can see in the picture, the button is very big. I want to replace it with two pink classic buttons (just like in the picture) if this is not possible, how can I change the size of the button? ...
MR MOVIE's user avatar
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2 votes
2 answers
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I am new to electronics and I am trying to build RGB LED which can be controlled with buttons. Each button toggles red, green and blue value respectively. I am stuck with buttons, I am trying to make ...
Artem Khvostyk's user avatar
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2 votes
2 answers
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I have a RP2040 microcontroller on a custom PCB, but the reset button (marked in blue) oxidized quite a bit in one year. You can see the greenish hue over the copper button. This button is the TS-...
ThomasPaper's user avatar
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2 answers
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İmage from https://www.altinkaya.com/web/content/287481?download=true I want to use DIN rail-type boxes for my PCB design. There are three buttons on top of the box, but they are about 40mm away from ...
mehmet's user avatar
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1 vote
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I bought a motorcycle Button Pod that has 1 latching (red) and 6 momentary buttons, and 7 wires (2 buttons are on the back). I opened it up/ checked connectivity and its wiring diagram is shown below. ...
John Robinson's user avatar
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2 answers
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I am building a battery-powered circuit which has an ESP32 microcontroller. I have a push on / push off button which should connect and disconnect the battery from the device as below. BAT + and BAT - ...
Engineer999's user avatar
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-1 votes
3 answers
231 views

Here's what I try to do: There is these common soft latching circuits using BJTs or MOSFETs or a 555 timer I made those circuits and they're working very well. The buttons used are always Normally-...
gowb0w's user avatar
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1 answer
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Here is such a scheme, I added the selection of BOOT0 via a jumper, put a resistor on this pin according to the datasheet, I did not put an external oscillator 32.768 kHz on the pins PC14 and PC15 ...
Pisppus's user avatar
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I am implementing an emergency button for a medical device prototype and I was wondering what is the best option to switch the load off when the button is pressed: a mosfet or a relay? The "load&...
PeUl's user avatar
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I have attached a reference schematics. The idea is to push the button (SW1) to turn the controller ON (via VCC I suppose), and when it is ON, the button can be used as Input to the controller. If the ...
Tahoor Asim's user avatar
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1 vote
1 answer
202 views

My situation: A power button (non-latching, 6 pins, but only 3 connected) on a board. When pressed, this button first bridges pins 1 and 2, then pins 2 and 3 and then returns to its original position. ...
elektroplax's user avatar
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1 answer
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I want to debounce a button in micropython and found this page on the micropython docs: https://docs.micropython.org/en/latest/pyboard/tutorial/debounce.html It uses a library called pyb but my ...
user3553471's user avatar
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