Questions tagged [wiring]

Items referring to physical wiring. For question to the wiringPi library use the tag wiringPi.

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50 views

Is it safe to use 3V3 on raspberry pi 3B+ to control a 3V DC motor?

I want to connect power to a 3V DC motor straight from 3v3 GPIO. Is it safe or will I brick my Pi 3B+ ?
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0answers
37 views

RPi.GPIO + single channel relay + solenoid lock

I'm working on my first python/hardware project and I want to create a simple (or at least I thought it was simple) cabinet lock, which will lock/unlock when certain RFID tags are approached to the ...
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0answers
19 views

128x64 LCD install to Pi Zero W

This is my first Rasp project, so please be understanding. I have Raspberry Pi Zero W and 128*64 dot china LCD. I do not have any program done for the screen yet. When start my Rasp only backlight ...
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1answer
35 views

Need Help with Controlling Some LEDs with a Raspberry Pi

I'm mainly trying to follow this guide here in order to connect some LEDs to a Raspberry Pi. I've read other guides as well, but this link is where I got the majority of my setup done. I've never used ...
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0answers
29 views

Bridge between Twilio API/phone line and closed circuit 20v intercom

Question about how to achieve the below using a Raspberry PI. What hardware would i need to buy and is the below possible? I have a closed circuit intercom system in my house. This is a video ...
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0answers
67 views

(Wiring) RPi 4B laptop keyboard

NOTE: Not that I've chosen a few wired keyboards, I'll accept an answer that explains HOW to (easily) wire a keybard to the pi - it cannot obstruct the use of a small fan powered by the GPIO. I'm ...
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1answer
54 views

Need help powering a raspberry pi thermostat using 24v power from the unit. I have it working plugged in usb

I have a raspberry pi thermostat that is plugged in through USB. Dealing with this voltage I don't want to "try and see what happens". My current setup is the Pi is powering the relay module through ...
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1answer
245 views

Wiring GPIO pins to press hardware button on USB MOUSE

i have soldered out buttons and replaced them with wired in USB mouse. Mouse itself is connected to device. Is it possible to wire those cables to GPIO in Raspberry PI model 2. And control clicks via ...
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1answer
32 views

How can I get the image recorded from a rear-view camera?

I have a rear-view camera (NAVITEL MR250) which I use everyday. I got into image processing and I thought a good personal project would be to create a "self-driving car" (Quotation marks because I ...
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3answers
45 views

Can I safely add a switch between a fan connected to power/ground?

I've just got a small 5V fan for my Pi, but it is very loud, and I'd like to be able to switch it on/off. Currently, the fan is just wired to 5V power and ground. I know that I can use the GPIO pins ...
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2answers
1k views

Rpi GPIO Controlling 5V Relay Problem

I am working on a project that requires a camera analyzing some images and activating the appropriate GPIOs to control a relay board. I currently have a touchscreen display, a Raspberry Pi Cam ...
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2answers
2k views

Rpi3 to Arduino Serial UART Communication Tutorial

I'm trying to connect my Arduino to my Raspberry Pi using the GPIO pins. I understand that the Pi uses a 3.3V signal while the Arduino uses a 5V signal so I bought a bi-directional logic level ...
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0answers
84 views

Multiple SDA/SCL | Getting 16x32 RGB LED to work with MCP23017?

I am close to completing a device which will have a 16x32 led matrix as well as quite a few lights/buttons/sensors. All these lights and sensors go through an MCP23017. I am using the Adafruit led ...
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28 views

Motor-Potientiometer read and write, additional power source

I want to get and set values for a motor potentioneter ALPS RK16812MG from a raspberry pi. I found a similar approach here however, the answers in that forum suggest a different wiring with an ...
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0answers
204 views

Connecting Raspberry Pi to old found TFT display

I have an old car DVD player sitting around that has a fairly decent secondary TFT LCD screen (hannstar 721h440b19-a1) that I thought I could use with my Raspberry Pi 3 Model B. I opened up the unit,...
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1answer
568 views

How can I wire a Raspberry Pi to an 8-relay board in a tidy professional manner?

I want to connect a Raspberry Pi to an 8-relay board, such as this one. Together with ground and power this amounts to ten wires. One option to connect the two is by using female to female jumper ...
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1answer
66 views

DS18B20 device not showing

Things I've tried: Replacing the DS18B20 twice (First one was a different brand than the other 2) Using: modprobe -r -a w1 w1-therm modprobe w1 pullup=1 modprobe w1-therm strong_pullup=1 Checking ...
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2answers
365 views

Creating jumper leads from ethernet cables - connect multiple components

I've bought some crimpers and a dupont connection kit and I'm planning on reusing some old cat5 ethernet cables I have. Is it reasonable to connect two devices to the RPi via the 8 wires in the cat5 ...
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2answers
742 views

How to use Solenoid Lock 12V DC

I'm new to this, and I can't see how to control a solenoid lock using raspberry (The wirings). I have an 8x AA Battery pack which is wired to output 12V. I don't know where to connect the black and ...
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1answer
185 views

Controlling button on YwRobot with Raspberry Pi

I am obviously new to Raspberry and Stack, but would be great if community can advice. My setup is the following: - YwRobot 545043 power supply (controller) connected to the breadboard and to the ...
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2answers
384 views

Do I need a resistor to wire my Pi Zero directly to a power source?

I want to connect my Pi Zero directly to a 5V 10amp power adapter (shown below) which in turn connects to a wall outlet. I know that with LEDs you can't just connect it directly to the power source ...
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1answer
186 views

How to connect more I2C sensors on top of a RPI shield

I'm struggling with a problem, how to connect more sensors on top of this raspberry shield => https://sixfab.com/product/raspberry-pi-nb-iot-shield/ The shields schematic can be found here and it ...
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1answer
453 views

How to wire up a LED Matrix with a Raspberry PI

I'm not sure how to wire up the LED Matrix corrctly. I followed the steps in this guide: https://github.com/hzeller/rpi-rgb-led-matrix/blob/master/wiring.md In this tutorial the matrix has 3 GND pins. ...
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1answer
2k views

Correct wiring for multiple analogue sensors?

I’ve recently embarked upon a project that I’ve wanted to do for a while. My overall plan is to have 3 planting shelves; each will have its own soil moisture sensor, water pipe and LED lighting. The ...
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2answers
82 views

Can somebody please tell me how to wire this?

I litterally cannot find it anywhere on how to wire this https://www.adafruit.com/product/2934 The only thing any of the pigrrl schematics show is connecting wires from b1,2,3,4 to pins on another ...
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1answer
1k views

How to wire an HC-SR04 without a breadboard?

I have a Raspberry Pi and a HC-SR04 integrated circuit for measuring distance. I have found many resources for how to connect the HC-SR04 to the GPIO of the Raspberry Pi, but because the HC-SR04 ...
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1answer
87 views

Wiring a RGB LED on to a Raspberry Pi

So I got a bunch of these LEDs and I can't seem to figure out how to wire them. This is what I'm working with. I tried adding the gnd and 5v but it doesnt do anything. When i connect the Din to 5v ...
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1answer
411 views

How can I use Garage Door Safety Sensors with Raspberry Pi?

I am trying to use garage door safety sensors as a way of counting cars. From my understanding, if there is no object (car) between the sensors, then they output a 3.3V signal every 6 milliseconds. If ...
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1answer
167 views

Flow Meter connected RPI 3 wiring [closed]

Is the wiring the same from a RPI B+ to a RPI 3 to connect a the flow meter too? If you strip the connector to just bare ends from the flow meter what cables/connectors do you recommend purchasing for ...
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2answers
2k views

Potentiometer on 16x2 LCD, does it need to be connected to VCC?

I am following this Adafruit tutorial on 16x4 LCD, and I managed to make it work. https://learn.adafruit.com/drive-a-16x2-lcd-directly-with-a-raspberry-pi/wiring From this tutorial, the potentiometer ...
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1answer
529 views

How do I debug an LED strip that isn't working?

I've scoured the forums here and elsewhere and can't exactly figure out what my next step should be. I've followed this tutorial https://tutorials-raspberrypi.com/how-to-control-a-raspberry-pi-ws2801-...
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1answer
283 views

Trouble with Flex Sensor and MCP3008

I'm working on a project currently, though things aren't quite working so I would like whoever's advice. So, to put it briefly, I'm using a Sparkfun Flex Sensor and an MCP3008 hooked up via a ...
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1answer
194 views

Wiring a SNES Controller to pi3 gpio or tactile switches

I'm looking to build a super pi boy, in the original they use tactile switches. However, I'm not sure how to wire the tactile switches and make them work as a x b y up down left right etc. I'm also ...
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1answer
832 views

How do I connect this anemometer to a Raspberry Pi? [closed]

I want to connect an anemometer to my Raspberry Pi 3. I'm trying to use the Maplin N25FR Wind Speed Sensor. How do I connect it to my Raspberry Pi? I found this picture online, but I don't ...
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4answers
2k views

“Blinking” relay by toggling pins between input and output

Edit for searches: This question is about using a 5v relay with Raspberry Pi GPIO pins that outputs 3.3v. There are a number of great questions below, read them through to understand whats going on. ...
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5answers
9k views

Controlling Switches from both Raspberry Pi relay & Manual [Home Automation]

I am currently working on Home Automation Project with Raspberry Pi, I am using 8 channel relay board for this, I can control switches over relay easily. But I want to operate them with pre-existing ...
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3answers
113 views

Basic questions about inputs/outputs on a breadboard (Pi 3)

I have started my first basic project today and I have a few questions I couldn't find answers to yet or I just don't know how to search for any. Sorry if those questions seem a bit stupid, but I will ...
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1answer
120 views

How to wire a switch to turn on and off the power source on a Pi Zero?

I'm planning a project that involves a portable Pi Zero with a battery and I want to wire a switch that turns on and off the pi/battery. I'm not too experienced with hardware and I would like some ...
1
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1answer
352 views

What Circuit Should I Use to Hardwire Raspberry Pi to Doorbell?

I am trying to connect my raspberry pi to my hardwired doorbell in order to send a text message when the doorbell button is pushed. I have successfully sent the text message using a button connected ...
1
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1answer
2k views

GPIO Buzzer. Not sure how to do this

Buzzer (all it says on the back): 3 VDC, 15 mA, 75 dB I have a simple breadboard circuit with a LED that works. I'm now perplexed (again, I know zero about circuitry) how to add a working buzzer. ...
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2answers
30k views

Using single 5V relay (jqc-3ff-s-z) - safety advice required

Above is relay I'm using and everything works as expected using diagram below. I will add 1n4148 diode on IN line for safety and will connect VCC to power supply before Pi. Can I use ground (GND) ...
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2answers
377 views

Are there any buzzers that work natively with 1 Model As?

I'm trying to follow the examples in this CanJam EduKit project -- see page 2: I'm having enormous difficulty tracking down a piezo/buzzer that I could use for that project, a buzzer that: Works "...
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2answers
409 views

When to set internal pin resistance at software layer

I'm trying to wire my Raspbery Pi 1 Model A (hereafter RPi) to a simple 6VDC buzzer and here is my best attempt: So the 3.3V power pin from the RPi is connected to the breadboard's top-most rail via ...
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1answer
225 views

Turning on-off-on-off switches to normal switches and integrating with GPIO [closed]

I have the following on-off-on-off button that I purchased from Adafruit for use with my Raspberry Pi 1 Model A. I'm trying to "bypass" the "on-off-on-off" functionality, and just make it so that its ...
3
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1answer
4k views

GPIO pin wiring for LEDs and their resistors

I have a Raspberry Pi 1 Model A and am trying to control an LED from an app that I will be running on it. The wiring I'm planning on going with is: Even though thats a RPI 3 in the diagram above, the ...
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1answer
643 views

Is wiringPiSetup BCM or BOARD?

I am using WiringPi to simulate PWM output to my GPIO pins. My problem is that I converted from the regular Rpi.GPIO library to WiringPi. I used BCM as GPIO mode but now WiringPi uses BOARD. How can I ...
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2answers
7k views

How do I do a basic MOSFET switch with Pi?

I have my GPIOs doing PWM with pi-blaster. Now I just need to figure out the wiring. I checked over electrical engineering, and found this question: https://electronics.stackexchange.com/questions/...
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0answers
168 views

Controlling M35SP-9T stepper with UNL2003

I would like to control a recycled stepper motor with UNL2003. I bought a downloaded a sample script from here Created a test circuit, and the controller is working fine with the 28BYJ motor. I did ...
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0answers
34 views

Wired IR with CIRT1/2 for Calypso CA-1000

Is it possible to do IR over wire with a Calypso CA-1000 amp? It has an IR receiver and wired IR in/out ports (IR out for daisy-chaining) and looks for CIRT1, 2, and custom codes. I would like to be ...
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1answer
162 views

Simple RPI3 / Garage Door help?

I have a very simple RPI3 / SainSmart 8 channel SSR setup. I have GPIO18 set as out and wired to the relay board. I can turn on the relay (at least its LED lights appropriately). My issue is that it ...