a construction base for prototyping of electronics

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38 views

GPIO Callbacks and How to Use Them

I'm building a prototype lift shaft, as many of you may know. And I was wondering what the best GPIO callback is, and how to use it. I've tried RPIO, bu I couldn't download it. And I've heard of ...
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1answer
36 views

Connecting a PIR sensor and a screen

I want to connect a PIR Sensor and an LCD touchscreen to my Raspberry Pi B+. However, it seems that they both use the same pins on the GPIO, which makes me unable to connect them both directly. What ...
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1answer
48 views

How should I connect GPIO pins to leads to my sensor in a permanent Raspberry Pi deployment?

I have built a small IoT application that runs on my RP. I would like to deploy it permanently in my home, but would like to formalize the breadboard setup into something a little more durable and ...
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1answer
41 views

Stepper Motor Not Responding. Wiring Issue?

I am following the tutorial: But I am using a pi t-cobbler and a Pi 2. I am also using the ULN2803 driver. When plugging a button into the appropriate gpio spots on the breadboard, I am able to run a ...
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1answer
89 views

Can't get Raspberry Pi to Control LED Lights

I am currently trying to get my Raspberry Pi to be able to control my RGB LED Strip. Here is the guide I am using: https://popoklopsi.github.io/RaspberryPi-LedStrip/#/. Currently, the LED Strip lights ...
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27 views

Connecting to breadboard over long distances

I want to get several buttons that can communicate over the internet. So I decided to connect push buttons to a raspberry pi. However, the issue is that these buttons need to spread out across the ...
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2answers
49 views

Limiting GPIO input voltage

I am a very recent new Pi owner and am setting up to build a 'lab board', with a breakout breadboard for the GPIO pins. I have read a great many dire warnings about frying the Pi if I accidentally ...
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2answers
83 views

Build a patch panel for the GPIO ports on a Pi

I don't like the idea of casual experiments where attaching jumpers straight to GPIO pins is a common activity. I would actually prefer the Raspberry board remain safely affixed to a lab-board, with a ...
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2answers
319 views

How many sensors I can connect to one breadboard ? (raspberry pi 2)

I'm a new user of raspberry pi 2. I'm preparing a school project and I wonder how many sensors I can plug in to my raspberry pi. I would like to connect 3 sensors: PIR sensor DHT22 DS18B20 ...
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5answers
758 views

Reed switch wiring

Working my way through a garage door project. I purchased a few of these but I'll be danged if I can find a consistent answer on how they're wired to a Rpi. My thought was just start hooking it up ...
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2answers
203 views

3.5inch RPi LCD display - detach from RPi2

Recently I have bought the Raspberry Pi 2 along with a small 3.5 touch screen. It works fine and I'm more or less happy with it (there is some choppiness in the rendering of things (even the cursor is ...
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0answers
8 views

How can I install the KY-001 temperature sensor on my Raspberry Pi 2 B? [duplicate]

I'm a beginner and know basically nothing about Raspberry Pi. Recently I bought a sensor kit and a breadboard, but there are no tutorials for them. So how can I, for example, install a temperature ...
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2answers
254 views

Do I need a resistor while connecting a Raspberry Pi to a breadboard?

At my workplace give away, I found a bunch of sensors for free (sun founders kit). Unfortunately, the box that contains more than 20 sensors did not have a resistor in it. I wish to connect a few ...
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0answers
37 views

Half size breadboard problem

I purchased the Raspberry Pi YouTube Workshop Kit from Buy a Pi.com a few days ago. I have a B+. But when I completed tutorial number two, LEDs On and Off, only the LED on the right turned on. Then I ...
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1answer
148 views

What would I use to let me use the GPIO pins on my RPi without soldering directly onto the pins & without a breadboard?

Is there a 'thing' that I can use to use the GPIO pins on my B+ without soldering and without a breadboard? I know I could use a breakout board with a ribbon cable and breadboard, but that adds an ...
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1answer
154 views

Symbol lookup error when pressing button on raspberry pi breadboard

I have a raspberry with a breadboard and a button connected to the breadboard. I am running this simple Node.js program on Raspbian: var GPIO = require('onoff').Gpio, button = new GPIO(17, 'in', ...
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1answer
371 views

RGB LED is not lighting up

I connected an RGB LED(common anode) via the GPIO, and tried to get it to light up, but for some reason when I run the command, the LED does not light up. Here's the code I'm using import RPi.GPIO ...
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2answers
460 views

Pi2 won't start when connected to breadboard via ribbon cable and gpio-to-breadboard interface

I have a Raspberry Pi 2 that works great until I try connecting a breadboard to it via a 40-pin ribbon cable and GPIO-to-breadboard interface board. Whenever the board is connected to the pi, the pi ...
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1answer
133 views

Question about Breadboard positioning

That's my current structure: The short metal of the LED (-) is connected to GND, and the longer (+) is in the port 26. This black "thing" (I don't know the name) is connected to my Pi B+ by a gray ...
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1answer
339 views

GPIO Temperature Sensor not Recognized

I recently tried to connect a temperature sensor (http://www.adafruit.com/product/381) to my RasPi via the GPIO, with a 4.7k (2Watt) resistor connecting the power and data (Source: ...
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2answers
9k views

Maximum current from usb (model b+)

I want to run the ps eye camera for my raspberry pi model b+. It is rated at 5v 500 mA . The question is , is it wise to directly connect it to the provided usb? I am using the pi to make something ...
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1answer
398 views

Using PI4J to toggle a led on a breadboard

Since yesterday I been trying to figure out how to turn on a led on and off, my problem is that Pi4J (from what I can see) only takes up to 20 GPIO inputs and my breadboard is set to 30 and from a to ...
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1answer
516 views

How to add a usb slave port to a raspberry pi

Is there a way, with a small board add-on, a simple cable incorporating some specialized chip, to add a usb slave port to a RPi, to let it be used as a device?
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2answers
168 views

My first breadboard / led

I loosely followed this. I've been studying breadboards for about an hour now, so this is super fresh in my head. My understanding is as follows: 5v power on the +(red) track (white wire) Ground ...
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1answer
600 views

LED board connected to raspberry pi

I've been searching for a little while for an LED light board for a while now that is easily compatible with the raspberry pi that I could use an arduino to my raspberry pi and then use my raspberry ...
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1answer
143 views

How to use Slice of Pi kit for prototyping?

I have a Slice of Pi prototype board, but I'm somewhat confused as to how I'm supposed to use it. None of the pads in the prototype area seem to be connected. How am I supposed to wire stuff together ...
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1answer
536 views

How to Make the DS18B20 Temperature Probes Plug into a Bread Board Easier

I use a RPi with waterproof DS18B20 temperature probes to measure the temperature of my homebrew. Every time I brew a batch I must sanitize the probe and insert them through the airlock into the brew, ...
2
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1answer
2k views

ADC for ultrasonic frequency recording?

I'm trying to create a prototype using a breadboard that is able to record sounds at the ultrasonic frequency range. I am looking into purchasing this microphone. The problem is that the Raspberry Pi ...
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1answer
359 views

Need advice on completing my raspberry vehicle setup

Lets start with my goal: I want to control my raspberry pi tracked vehicle via wifi using nodejs. See the attached picture, it is awesome already. I've got the following working: rolling tracked ...
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4answers
4k views

12V device to a Raspberry Pi

For my school engineering project, I have a coin acceptor device which I would like to link to the Raspberry Pi. However the device requires 12V in power. I have an idea of what to do to power the ...
3
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1answer
697 views

Detect if current is flowing [closed]

I have a circuit I am working on and I need to be able to detect if current is flowing through certain GPIO (breadboarding wires really), but I'm not totally sure how to go about it! Would I want to ...
2
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1answer
712 views

Creating a 4 player electric shock game

I have torn apart a toy prank electric buzzer that delivers a shock when you press the button. I would like to find a way to send a signal from a GPIO pin to act as the button press. I would then like ...
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2answers
5k views

Microphone for a project

I'm just wondering whether or not this Electret Microphone Amplifier - MAX4466 will be sufficient enough for the project that I'm planning? My project I plan to connect the microphone up and accept ...
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1answer
3k views

Python script failing with AttributeError: LED instance has no attribute '__trunc__'

I am currently bread-boarding two LEDs with 560 mOh resistors connected to the RPi over a ribbon cable that connects to the breadboard with a Pi Cobbler. The problem I am getting isn't with the ...
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1answer
332 views

Why aren't GPIO_22 and GPIO_23 lighting up LEDs? (Beginner)

I'm losely following a traffic light tutorial where the following diagram has been provided: I've followed the diagram, only deviating from the tutorial to use RPi.GPIO in GPIO.BOARD mode.. I had no ...
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2answers
78 views

Is it normal to read a connection between pins 2 and 4 of a GPIO breakout board?

So, I recently bought this cobbler kit from adafruit, and finished up the soldering as they instructed. However, after doing so, I hooked the cobbler up to my breadboard to test the connections. I ...
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1answer
615 views

How can I use the RPi GPIO to make a headphone sensing audio jack?

I am working on a project that involves a raspberry pi acting as an internet radio client which the public can access by plugging their own headphones into a 3.5mm (1/8”) jack. They will have access ...
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1answer
2k views

How to get pin addresses on a MCP23017

Recently I purchased a few MCP23017. I've been reading up on them and I've gotten a few lights to turn on and such. I am having a problem trying to understand how to figure out the register address ...
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3answers
361 views

What is breadboad? Is it a must for DYI projects?

I have some questions before I commit myself into RasPi DYI projects. What is a breadboard? The usage of it? Can I connect LEDs or switches (and others), with GPIO pins, without breadboaord, and/or ...
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2answers
5k views

Female Breadboard Jumper Cables

Can I use the inexpensive female/male or female/female breadboard jumper cables to temporarily wire sensors to the GPIO pins? ...
10
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2answers
2k views

What do I need to simulate traffic lights using LEDs?

So I'm making a model that simulates traffic lights (Red, Amber, Green) so there will be three LEDS that need to be preferably extendable (I don't want them attached directly to the breadboard) but I ...
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2answers
200 views

Breadboards is this possible?

Is it possible to customise a breadboard to suite a project? Basically, I need to design a model of a "street" that has roads, and buildings on a breadboard that interacts with a Pi but making the ...