Questions tagged [breadboard]

A breadboard is a pre-made generic board for prototyping, typically referring to solder-less, reusable plugboards.

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What is this breadboard that can be soldered on a PCB

Very simple question. What is the part number of this small bread board on this board. There are two breadboards on it. The smaller one actually is soldered on the PCB and it is connected to IOs of ...
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48 views

Number Blocks toy that changes colors according to how many blocks are connected

Number Blocks is a British children's show that gets kids to enjoy learning numbers and simple arithmetic. I watch the show with my 4.5yo and it's really well done. One neat thing they do with the ...
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Did I wire this correctly? Trying to understand Thevenin and Loading of circuits

So right now I'm learning about RThevenin and VThevenin of a circuit and how to calculate what the voltage will be once you load the circuit. I am trying to build this circuit: I am not using these ...
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117 views

Question about various power/ground sources in one circuit

I would like some advice on how to handle different power/ground lines on the same circuit. I am not clear about how to wire-up multiple peripherals etc. with their own power sources in a single ...
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105 views

Voltage of Logic Low on ICs

I'm currently trying to create a 4 bit ALU using the CD4011BE quad 2-input CMOS NAND gate ICs. However, I'm having some trouble when creating the full adders. Sometimes, when the IC outputs logic low,...
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Why are the inputs on my analog multiplexer tied to each other in pairs? (0+1,2+3,3+4…)

I'm currently wiring the signal of 16 potentiometers into a CD74HC4067 16 Channel Analog Multiplexer. The circuit is powered by the 3.3V signal on the Teensy 4. P0 (the first potentiometer) is wired ...
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2answers
60 views

What would I use to distribute power in my project?

I want to power 10 SG90 servos, which each operate at 4.8v or 6v and need over 1 amp in order to start and use 700ma max during operation (I think). When I look at a kit like this (https://www.amazon....
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33 views

Connecting breadboards with different batteries to a single switch

I have three different breadboards with ten LEDs & resistors connected in parallel. All three are powered by a 9v battery. I was wondering if there would be a way to wire all three batteries to a ...
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2answers
153 views

How to mount a narrow component on breadboard?

I have a narrow component with two rows of pins. The pins have the right pitch but the rows are too close together to be placed over the non-conducting gap between E and F rows of the breadboard. The ...
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1answer
62 views

Breadboard circuit with PN2222 transistor, LED constantly on

I am trying to build a breadboard circuit for my class assignment using a PN2222 transistor. The LED light is constantly on, without pressing the switch (button). The directions of my assignment ...
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51 views

How increase pressure sensor breadboard sensitivity?

I build a pressure sensor breadboard according the schematic. It works, but has quite low sensitivity - it shows some pressure only after big pressure is applied. Is there a way to increase ...
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405 views

Perfboard dimensions

I would like to design a 3D printed enclosure for my project. I am using these perfboards from amazon. I could not find online the dimensions for the mounting holes. I know I can use a calliper, but ...
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4answers
77 views

simplest way to create an activatable alarm on a speaker?

I have made a circuit that produces a 3.3V high when its active and 0V when it is off. Now I would like to extend it with a speaker that plays some sort of alarm (although it shouldn't be too ...
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35 views

Unable to supply FONA 32u4 3.5 v through circuit

I am relatively inexperienced when it comes to circuitry and electronics. However I am trying to create a simple device in which with a press of a button, the device turns on and calls a specific ...
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57 views

Relay circuit not working

I have connected my relay with a nodeMCU so that when I give commands to relay through nodeMCU the led connected to relay gets powered up. But after proper connection also it doesn't power up.
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588 views

TRRS 3.5 mm Audio Plug (male) into a printed circuit board

Have a device I'd like to plug into a headphone jack of a cell phone. Wanted to start making some more professional prototypes; print my first circuit boards, etc. I'd like to be able to implement a ...
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1answer
79 views

Would this be the correct way to wire this breakout board sensor with an ADC?

I have a Raspberry Pi 3 Model B. It is going to be wired to an ADC called the MCP3008 like this: I also have a breakout board, called the ML8511 UV Sensor which I am going to solder to the ...
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2answers
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Is this the correct way of building a voltage divider through this Link

I’m trying to build a voltage divider through following the instructions on this link http://raspberry.io/projects/view/reading-from-a-mcp3002-analog-to-digital-converter/#step1 I have connected the ...
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how do I connect the infrared distance sensor to the breadboard?

Someone said I was suppose connect the analog to digital converter and the infrared distance sensor to the breadboard by following this link:http://raspberry.io/projects/view/reading-from-a-mcp3002-...