How to Build an Ohmmeter Using an Arduino

In this project, we will show how you can build an ohmmeter using an arduino. An ohmmeter is a device that can measure resistance. Most of the times now, ohmmeters aren't standalone devices but appear as one of type of measuring device amongst many in a multimeter. An advanced multimeter, today, would have an ohmmeter, voltmeter, ammeter, capacitance meter, continuity tester, and possibly a temperature sens ...

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How to Build a Liquid Level Gauge Circuit with an Arduino

In this project, we will build a liquid level gauge circuit with an arduino. This is a circuit in which a liquid level can be monitored through a gauge. We read the liquid level from the gauge (low, medium, or high), just as you see above. With a microcontroller such as the arduino, building this circuit is a pretty simple feat. The microcontroller can read the analog voltage from the liquid level sensor an ...

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Arduino Light Meter Circuit

In this project, we will go over how to connect an analog volt panel meter to an arduino so that it can measure and give us a readout of light striking the circuit. In this way, the circuit will function as a light meter. When there is a lot of light shining on the circuit, the meter will deflect greatly. When there is a low level of light hitting the circuit, the meter needle will barely deflect. In this w ...

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Arduino-Based Optical Tachometer using arduino

Over ten years ago, I put up a web page with detailed instructions on building a simple electric motor based on one from the Beakman's World TV show. I called it the "Beakman's Electric Motor" page and over the years it has had hundreds of thousands, if not millions, of hits. Realizing that just building a motor, no matter how cool, wasn't a good science fair project, I added suggestions for using the motor ...

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Tweet-a-watt – How to make a twittering power meter… using arduino

Tweet-a-watt - How to make a twittering power meter... This project documents my adventures in learning how to wire up my home for wireless power monitoring. I live in a rented apartment so I don't have hacking-access to a meter or breaker panel. Since I'm still very interested in measuring my power usage on a long term basis, I built wireless outlet reporters. Building your own power monitor isn't too toug ...

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Isolated mains power monitoring (Arduino)

All about power today.. For a while now, I’ve been looking around for a mains (220-240VAC) power monitoring circuit that I might be able to interface with an Arduino.  There is of course the OpenEnergyMonitor solution, but they seem to use a transformer to isolate and measure the mains voltage.  The transformer doesn’t exactly couple to the mains nicely: so the voltage on the secondary side is not a scaled ...

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Arduino-Based Optical Tachometer

Over ten years ago, I put up a web page with detailed instructions on building a simple electric motor based on one from the Beakman's World TV show. I called it the "Beakman's Electric Motor" page and over the years it has had hundreds of thousands, if not millions, of hits. Realizing that just building a motor, no matter how cool, wasn't a good science fair project, I added suggestions for using the motor ...

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Arduino Serial Thermometer

The Arduino reads temperature from a MCP9700 temperature sensor IC and displays the temperature in the Arduino IDE serial monitor window. Also see the Arduino LCD thermometer tutorial (tutorial 14). Prerequisites Complete Tutorial 9: Using the Arduino Serial Port before attempting this tutorial. Components Besides an Arduino Uno board, USB cable, wire links and a breadboard, you will need: QTY PART DESIGNAT ...

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Telemetry with solar cell using an Arduino

*NOTE* THIS PROJECT IS DONE BY A GROUP OF STUDENTS FROM SINGAPORE POLYTECHNIC. Telemetry - Solar Cells Our project is using Arduino with the ZigBee to transmit and receive data from the solar cell. Data will be shown in the LCD and the software called “X-CTU”. Components used: 1 Arduino Uno 1 ZigBee Shield (Transmitter) 1 ZigBee (Receiver) 1 LCD Monitor 1 Solar Cell 1Resistor (Value may change) Instructions ...

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Sleep Tracking using an Arduino

Background and motivation This project was motivated by two things: my almost complete inability to get out of bed in the morning, and my fondness for recording data from routine activities and making graphs with that data. My main problem with waking up in the morning is that feeling of grogginess along with an intense desire to sleep more. However, I've noticed that sleeping without an alarm clock, and ju ...

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G Meter using arduino

I have a late 80's VW and the gauge cluster has 5 dummy LED locations underneath the other warning lights.  Well I was tired of the m not doing anything, so I decided to do something about it.  I came up with the idea to put a lateral gravitational force mater (G Meter)  in there place Step 1: Gather up the needed supplies If you wish to use your Arduino: 1- Arduino 5- RedGrenBlue LEDs (Mine are common anod ...

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STEAMPUNK STEAM GAUGE, POWERED BY ARDUINO

This was created to be some eye-candy for my kitchen. I wanted something unique for a special blank space on my wall, and adding movement, blinky lights and interesting mechanical “guts” made it even better. Ultimately, this project ended up requiring the following range of skills: 1. Basic mechanical skills 2. Light metalworking and fabrication 3. Graphic design – for the new dial face 4. Circuit design 5. ...

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