The sketch is the software that runs on the arduino. The software code of arduino vu meter is written in arduino programming language and compiled and burned using arduino ide. Amp hour meter with data logging micro sd, 16 bit adc, rtc real time clock, arduino nano, and 20x4 lcd. This library allows an an arduino based on samd architectures i. The arduino can be damaged by greater than 5v or by negative voltage. Build your own sourcemeter mit photovoltaic research. Arduino current sensor this arduino based current, voltage, and power sensormeter tutorial was created for hacktronics by steve spence. Our arduino example code has been written so that you can plug the coulumb counter board directly into arduino digital pins 2 through 7 as shown below.
The acs758kcb150u is a hall effect current sensor rated for 150a. Trumeter adm series graphical panel meter, 1% accuracy, current, voltage or frequency input, negative backlit lcd configurable to white, green, red display, 2 discrete or analog configurable outputs, 1224 vacvdc operating voltage, panel mount. This circuit, then, essentially function as an ammeter, which is a device that measures current. A kilowatt hour is a huge unit of measurement for an. During my childhood days continuing studies after dusk was a real challenge. The main reason behind making this is from my personal experience, when i was performing one experiment in the lab, i could not find a voltmeter so i made this hack to fulfill my requirement and also i think it will help others too. Its designed for dc application like a battery charging system or for a solar system power output monitoring.
The model 910p digital amptime meter is a stand alone microprocessor based unit. Circuit diagram of the dc panel meter using arduino is shown in fig. Introduction measuring voltage, current and subsequently the power. Arduino uno is an open source electronics prototyping platform based on flexible, easytouse hardware and software. If you want to buy cheap volt amp meter, choose volt amp meter from. Right now it monitors the above values of attached gear, and im thinking about adding web. You want some resolution on time that is less than 1 hour. The ampere hour meter or amp hr meter or ah meter is similar to the watt hour meter which is used to calculate the total usage of electricity at households and commercial establishments. Arduino based audio meter full project available with. Diy amp watt hour volt meter arduino use arduino for. In this project, we will show how to connect an analog current panel meter to an arduino, so that we can measure and display the amount of current flowing into the arduino board. Arduino nano could not drive the microsd card, so i switch to a mega and it works perfectly.
Electrical enclosure with arduino current sensor 72 amp dc or ac datalogger. Working on a 240v meter in a box which i will have done soon to test my amateur radio linear amplifier. Voltage is measured by the help of a voltage divider circuit. Resistor r 1 is current limiting resistor connected to anode pin of lcd for backlight. This is an explanation and set of building plans for a usbpowered sourcemeter with a personal computer interface. Analog amp meter clock an elegant timepiece marks the hours with needle meters by gene scogin several years ago i had the idea of making an analog clock that used voltmeterstyle needle gauges rather than a standard dial. Whatever clamp meter for arduino styles you want, can be easily bought here. For my offgrid ham radio and solar projects, i needed a way to measure volts, amps, watts, amp hours and watt hours.
Like, a wattmeter built using arduino can easily be tweaked to monitor the results on serial monitor and plot a graph on serial plotter or add an sd card to automatically log the values of voltage, current and power at predefined intervals. Panel meters in regulated power supplies are used to display electrical parameters like voltage and current. In this article, i will use the current monitor based on the zxct series ic for measuring current voltage and watts. The final code also prints the m watts hour and the elapsed time since the board was power. Presented here is a dc panel meter circuit to display dc voltage and current of power supplies, including diytype ones.
However, ampere hour meter takes into account the ampere hours and just like the watt hour meter, it is also an integrating meter. The sourcemeter was designed as a homemade currentvoltage iv tester to measure the iv. Diy byo do it yourself ac dc hall effect current sensor transducer assemble this current monitor diy kit within an hour using soldering iron and volt meter and 12 volt power supply. A shunt is already on board so its very easy to hook up. I also replace the meter face to show the proper scale. The adm100 is not recommended for milliamp ma applications. Theres a couple of commercial products that can do this, but not with the flexibility i wanted. Download the code from a link below and open it in your arduino ide. Usage pro trinket power meter adafruit learning system. To start the amphours will be around 0, but over time they will grow based on how much current a device uses. It also a good idea to add some protection diodes with any voltmeter. The 8509412 is a dc hour meter with highly reliable drive mechanism, the honeywell 85000 series features an odometer gear train and accurate quartz crystal timing to provide enhanced performance. Because there are 3600 seconds in an hour, one amp hour equals 3600 coulombs.
As the arduino analog pin input voltage is restricted to 5v i designed the voltage divider in such a way that the output voltage from it should be less than 5v. This meter is capable of calculating how much currentampis consumed in a minute or in a hour for up to 99hrs. The main objective will be to implement a function that measures the temperature of the hands of the person that makes the experiment. This electricity sensor is based on ta12100 current transformer, which can transform ac signals of large current into small amplitude signals. It endeavors to provide the products that you want, offering the best bang for your buck. For displaying the seconds, a part of the code has been added. For measuring current, you pass the current through a small value resistor to generate a small. Weve made d2 permanently high for vio, and d5 low for gnd. Major corrections and additions made 992014 see the new and improved 2015 version at. I have a 43 watt light bulb connected for the load in the picture which is showing 44 watts.
Because your setup, ct, resistors and input voltage may be different, there is a scaling factor in the sketch which you will need to change before you will get accurate results, see below for calibration. Once the libraries are installed download the power meter arduino sketch from its home on github by clicking the button below. I have spent the last 48 hours looking on more forum sites than you can believe with what. A wide variety of amp hour meter options are available to you, such as digital only, analog and digital, and analog only. The schematic diagram of the arduino ammeter project is follows. In addition to the wattmeter, this circuit can also act as a voltmeter and ammeter to measure voltage and current. I made an arduino volt amp watt meter, but i like the amp hour used feature you have, a great addition to my meter. I think the amp hour feature will help me judge the remaining power in the battery. Arduino based current meter with i2c lcd screen duration. The schematic diagram shows the connection of the arduino uno with lcd, resistor and led. I built this nicelooking wooden analog style clock with an arduino nano and 1ma ammeters.
This arduino based current, voltage, and power sensormeter tutorial was created for hacktronics by steve spence. Diy byo do it yourself ac dc hall effect current sensor. It is ideally suited for precious metal plating and has a wide range of features. In the third project we will make a loveometer using a temperature sensor and three leds with 220. Dc panel meter using arduino full electronics project. Ever wanted to see how much electricity your next project is consuming. Choose one that could withstand over 10w or 15w of power, so you could measure up to 1 amp at 12v.
Diy amp watt hour volt meter arduino use arduino for projects. The amphour measurement is interesting because its showing how much current has been consumed by the device since the power meter was turned on. Building your own meters not only bring down the cost of testing, but also gives us room to ease the process of testing. Play video i belong to a village of odisha, india where frequent power cut is very common. It is an improved odometer gear train, plus snaptogether chassis, fits into a shockproof and totally sealed case often resistant to many acids and solvents. The arduino converts the raw data from its analog input into human readable values, then sends them to the serial port monitor. Sound detector circuit using opamp 741 engineering projects.
I designed a arduino microcontroller based solution that is very. Selecting an amperage size with an h causes the meter to accumulate amphours. In this article i describe the simple setup and explain the code to drive analog meters using pwm outputs from an arduino and the lcd smartie program. First of all, we will have to connect our electrical circuit. The heart of the circuit is opamp 741 which is used in order to sense the. This panel meter requires a dc voltage to run, and then has two thick gauge wires to measure current draw. The circuit diagram of sound detector circuit using opamp 741 is shown in figure 1. This meter is capable of calculating how much current amp is consumed in a minute or in a hour for up to 99hrs. Overview pro trinket power meter adafruit learning system.
Diy arduino power meter logger homemade electronoobs. In this project, i will show you how to build an arduino wattmeter, a device that can be used to measure the power consumed by a load. Arduino uno is the power source of the all other components. Similarly, wiper of variable resistor is connected to pin 3 of led in order to adjust the contrast of display. This project is about the simple hack of voltmeter by arduino. This eliminates the need of calibrated shunt leads. Analog current meter module ac 05a ammeter sensor board. Ampere amp hour meter is a solid state measuring device, a similar concept to that of a water meter, which is used to calculate the amount of electricity charge used by multiplying the flow rate of electrons by the amount of time electrons flow through the wire. I designed an arduino microcontroller based solution that is very extensible. All thats needed is an arduino and a 16x2 liquid crystal display lcd. Using a shunt, a device that converts current flow into millivolts, an amphour meter is able to measure the total amount of current that flows into and out of a battery bank.
Arduino ammeter circuit learning about electronics. Arduino wattmeter voltage, current and power measurement. Arduino analog panel meter clock arduino project hub. If you want to buy cheap clamp meter for arduino, choose clamp meter for arduino from. Fortunately, theres an alternative way to measure soc that provides much more information than the humble voltmeter. Selecting a size with an m causes the meter to accumulate ampminutes. The meter is a little bigger than the plate and had to enlarge the hole. Amplify shunt resistor voltage to an arduino using an op amp. You can use a voltage divider to knock down the voltage, and a diode or fullwave rectifier to take care of the negative voltage.