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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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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 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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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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3 answers
225 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 answer
196 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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I am trying to understand properly how buttons work with the pico; I can make them work but I don't understand why it works or if it is the right approach. I get that I need to add Pin.IN when ...
user3553471's user avatar
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In my head I see it something like this: What it must to do? When I push button first, capacitor will charge and LED will emit(B->C in transistor). Before capacitor will be discharged and while ...
bazylevnik0's user avatar
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3 answers
177 views

I will add momentary push button to car infotainment panel (instead of blank). It's VW/Audi original button which I want to use to switch relay (ys-rt1c - Timer delay turn off) to supply 12 V for rear ...
Jason's user avatar
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1 answer
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I am facing a little problem on a CPB project on a reset function because a need one physical button and one programmable one by an output pin of an Annex MCU. How can I manage the positive signal ...
Khales Naim's user avatar
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7 answers
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I'm working on a project to add a time delay to the button, so that when pressed, the toy plays for, say, 15 seconds and turns off. The toy is intended for children with disabilities and sometimes ...
JSK's user avatar
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3 votes
1 answer
365 views

Is it possible to turn a capacitive button in to a protruding mechanical one? I am thinking something round that sticks to a surface with a capacitive button on it and is essentially just a button ...
Locane's user avatar
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3 answers
2k views

I'm hoping someone could guide me in the right direction. I have an ongoing project that seemed simple: to utilize a push button. When you press it once, it toggles the LEDs on; when you press it ...
Warranty_void's user avatar
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-1 votes
2 answers
485 views

I am using and emergency stop in an application. It is a push button with a twist release. I have the main circuit connected to the normally closed side and a detection circuit wired to the normally ...
Siva's user avatar
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1 answer
172 views

I have ordered some of these small joystick buttons and I'm not sure if they will be properly fixed just with the 6 soldering points, as you do some latteral pressure to action them. If I create a ...
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2 answers
304 views

How can I bypass the touch button on fan Sencor SFE 2340WH? I want to of/off fan with smart momentary switch. Below is componets maybe with reading errors. Components: TR1-TR5: HSDQ / BT134-800 / ...
Danster's user avatar
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1 vote
3 answers
196 views

I have a pushbutton which delivers 12V when is pushed. I want to connect it to a PIC12F1572 input pin. What is the proper way to do it? My idea was to use voltage divider to reduce voltage under 5V ...
SkePsis's user avatar
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1 answer
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I want to use this tactile switch in my PCB design: https://datasheet.lcsc.com/lcsc/2002271735_XKB-Connectivity-TS-1101-C-W_C318938.pdf As you can see in the document, the distance between the edges ...
user1584421's user avatar
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2 answers
596 views

I have an FPGA Starter Kit (Lattice MachXO3) which I'm using 25 IOs for push buttons inputs. I'm driving the starter kit and button circuitry from the wall with a 12V AC/DC adapter (rated for up to 2A ...
epiolba's user avatar
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0 votes
1 answer
163 views

UPDATED: I am building a sorting system using lights and buttons. The function is I have multiple items in a bucket I would like to sort to several different bins. What I would like to have is up to ...
BrinkDaDrink's user avatar
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1 vote
2 answers
122 views

I would like to create a program that uses a Raspberry Pi Pico, this four-digit seven-segment display, SG90 micro servos, and one of these buttons. My idea is that every time the button is depressed, ...
Vorde Vord's user avatar
  • 11
5 votes
2 answers
3k views

This is a "6-pin self-locking push button", but I don't know what dashed lines mean (those that are in the schematic).
Ibrahim Ali Bimo Design's user avatar
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-1 votes
1 answer
357 views

I have 5 signals as digital input. We can think of them as a simple button. They hook up to PCB via a connector on the card and I want to show them as a port in the Schematic. How can I determine ...
bcdyzi's user avatar
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0 votes
1 answer
233 views

I need to design a circuit with a NI DAQ 6001 and 3 push buttons. I don't know any design software, so I just drew by hand. I can give an explanation for you to understand. Pins 1, 2, and 3 are ...
Govind Sankar M R's user avatar
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2 answers
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I'm using two 14.8 V Li-po batteries each to power frequency generators that are connected to piezo speakers. I plan on adding XT60 connectors to the wires of the frequency generator so that the power ...
popeye3024's user avatar
  • 11
1 vote
1 answer
208 views

I'm trying to create a basic 4-button battery powered remote. The logic behind it is that when one of the buttons is pushed it pulls the base of the PNP low thus turning on power to the circuit. The ...
Gibran Zawahra's user avatar
  • 13
2 votes
1 answer
525 views

I need to read the input from 8 different push buttons on an ATtiny microcontroller. After researching how to do this with the least number of pins, I found out about using a voltage divider with ...
JV Lobo's user avatar
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1 vote
2 answers
219 views

Here is my button pull-up resistor circuit on a breadboard. Note both the additional link between the button and ground, and the multimeter measurement point is different. I was wondering what the ...
NJD's user avatar
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0 votes
1 answer
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I don't have a lot of experience with soldering, but I can manage small repairs and I regularly watch TronicsFix's repairing videos (like this one for the same issue I have). Quite lucky, right?! So ...
NutuS's user avatar
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0 votes
2 answers
239 views

I'm working with a MP3 player module: https://wiki.dfrobot.com/DFPlayer_Mini_SKU_DFR0299 The pin named "IO2" will do the following: at short button press it will start to play the mp3 file ...
Omer's user avatar
  • 103
0 votes
4 answers
212 views

Making a button-based input device for my Raspberry Pi. When a pin is pulled to ground it registers a false, so: "if pin 1 = false output = 1". The problem is I need 30 buttons and I only ...
Nareik Seivad's user avatar
  • 49
0 votes
1 answer
167 views

I am currently planning a circuit around an Adafruit Sound FX. I want to use it in a costuming prop, but use the main button to trigger different sounds (without them being randomized). It should also ...
DaveMitHut's user avatar
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0 votes
2 answers
133 views

I have a Bosch refrigerator and some buttons have started to fail and I'm going crazy trying to find the push switch they used. I can't see any references and I have no idea what to look for. Any ...
const314159's user avatar
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1 vote
3 answers
837 views

I have this momentary push button with built in LED. I cannot figure out whether it has a built in series resistor. How can I check if it already has a series resistor without damaging it? If I use ...
user1999's user avatar
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1 vote
3 answers
333 views

I want to add a tactile switch to interact with my MCU (using a GPIO) to add flexibility in using and debugging my PCB. My question is, is there any preference on adding the switch (N.O. type) in ...
Developing Electronics's user avatar
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1 vote
3 answers
208 views

I have an Arduino project where a pin is kept high until a momentary button press connects the signal directly to ground, so the code is expecting the button to be ...
mredig's user avatar
  • 111
0 votes
1 answer
674 views

I'm making a little flashlight that'll turn on and off with a push button, but the problem is that my push button changes 3.2 V into 2.8 V. I don't know if it's a normal issue or how to fix it. Any ...
Eli-ott's user avatar
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0 votes
1 answer
222 views

I have a XC6220B331MR-G 3.3 V LDO voltage regulator that supplies power to the MCU along with some other components on my board. The regulator has an enable pin which I connected to VIN so that the ...
Mostafa Ibrahim's user avatar
  • 51
0 votes
3 answers
384 views

I developed a PCB for a project I'm working on. Today after assembling I tested everything and all relays where working as well as the ESP32 itself. Then I connected the sensors and it stopped booting....
DeadSec's user avatar
  • 377
0 votes
1 answer
553 views

I want to do something similar to this question: PCB "Touch" Button However there the PCB was not described that much. I have a design where each 'finger' is 1mm apart. And I'm not sure ...
Anton Krug's user avatar
  • 135
5 votes
1 answer
889 views

I have bought single push buttons in India for 1 rupee a piece, that's a penny or so. They are seemingly very basic (you can see them around here other question). I might follow up here with more ...
Gunther Schadow's user avatar
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