Circuit playground express is the newest and best circuit playground board, with support for circuitpython, makecode, and arduino. Mar, 20 i needed a good lc meter for my one of my next projects so i went and built the famous lc meter by phil rice. Hello, im trying to understand your project here, and want to give some advice. Description after finishing my last project simple lc meter, there were some discussions in the forum i am a member of, that ability to measure electrolytic capacitors would be very useful in this type of device.
Refer to the getting started page for installation instructions. To measure inductance or capacitance the frequency of an oscillator is measured, and the changes are relative to the component being measured. For more details of measuring frequency with timers, see my article frequency counter. The most powerful and scaleable electronic register ever produced. Easy to operate, easy to see, and configurable to your industry or application.
May 15, 2012 if you want to build a low cost lcf esr meter then lcfesr meter by dr. How to make a digital arduino voltmeter mechatrofice. For more circuit examples, see the fritzing project page. Stepper motor with a4988 and arduino tutorial 4 examples.
The revised software checks for the presence or absence of a 1k resistor from pin 11 of the pic to ground. Pic16f628 lc meter circuit lc meter circuit made with 16f628 microcontroller can be used to measure the inductor and capacitor values. It is good that if you can create a readme file and. So i decided to write this article on how to build an lc meter using an atmega328p chip and arduino libraries. The positive displacement measuring instrument that provides sustained accuracy and repeatability providing accuracy you can depend on. Diy lc meter with frequency measurement once again kerry wong has published details of a useful arduino based project his lc meter with frequency measurement. In this project, we will show the inductance and capacitance values along with the frequency over 16x2 lcd display.
It includes high quality doublesided printed circuit board pcb with red solder mask and presoldered tracks for easier soldering, lcd display with yellowgreen led backlight, programmed pic16f628a microcontroller chip, high precision capacitors and inductor, 1% metal film. Lc meter circuit made with 16f628 microcontroller can be used to measure the inductor and capacitor values. Special edition lc meter kit includes top notch high precision components that are only found in premium quality kits. Pic16f84 lcd display lc meter circuit box front waisted measure be careful when buying the box to cut the picture box paste it on top and falcata or drawing a knife then stop in the box bourdu to keep the four m3 screws and nuts, use bordt using the reader relays internal diode line is im a little late, i realized i did board relay leg. Oct 14, 2015 an lc meter circuit is used to measure value of a reactive element like a capacitor or an inductor. After building and using the pretty good lc meter for a few months, i came to understand some ways in which it could be improved. Rcmeter from one blog just copy, interesting idea for picofarads measuring. Basically lc meter is a kind of frequency meter, there is an lc tank oscillator that oscillates with measured l or c and result is being calculated. The system combines an onboard frequency generator with a 12bit, 1 msps, analogtodigital.
This is a arduino microcontroller based lc meter working discription video, we can be able to measure the inductance and capacitance with this arduino based meter. The opensource arduino software ide makes it easy to write code and upload it to the board. Lc meter with ttl mosfet useful, but not included in final collection. Despite its modest cost, it offers automatic direct digital measurement over a wide range for both capacitance c and inductance l with 4digit resolution. This waveform is affected by the lc circuit, filtered by the comparator. We named this new arduino lc meter goliath, its a simple tool for hobbyist for inductance and capacitance measurement. Having inspired from surprisingly accurate lc meter. Arduino code is quite easy to use without the arduino boards. Oct 16, 2010 so i decided to write this article on how to build an lc meter using an atmega328p chip and arduino libraries. Software voltmeter using arduino starting electronics. I needed a good lc meter for my one of my next projects so i went and built the famous lc meter by phil rice. An improved inductance capacitance meter by phil rice vk3bhr.
We are using the inbuilt serial monitor in the arduino ide to act as the terminal to communicate with the arduino board. Because its based on arduino, so you can easily use the foca to update the new firmware. So, i just changed the original firmware a bit and added few electronic goodies to it to make it more compact. At the heart of the a4988 driver you will find a chip made by allegro microsystems. To measure inductance or capacitance the frequency of an oscillator is measured, and. Its just a lc oscillator and the mcu is only used to measure the frequency and a bit of math. Water level indicator arduino, arduino projects, arduino lcd. We already built frequency meter, capacitance meter and resistance meter using arduino. Well here we are going to build an inductance meter using the arduino microcontroller. Portable arduino based lcr meter nina jetchkova djermanova, jivko gospodinov kissovski and vasil atanasov vatchkov abstract an arduino based portable lcr meter is designed, using the impedance converter ad5933 for measuring the reactance. Because its base on arduino, so you can easily to use the foca to update the new firmware. After building and using the pretty good lc meter for a few months, i came to. This means that the comparator will turn it into a square wave with a duty of 50%, and pulseinpin, high, 5000.
I love hungarian rock since my school days, but i dont know a. This is achieved by energizing the coils with intermediate current levels. A pretty good lc meter based on the avr microcontroller calculates and displays l and c from oscillation frequency using reference components. Rc meter from one blog just copy, interesting idea for picofarads measuring. Autoplay when autoplay is enabled, a suggested video will automatically play next. With this article i kick off my series on the arduino esplora board. Here is another piece of laboratory equipment lc meter. May 29, 20 the arduino code is a modified version of the sketch from the arduino lcd voltmeter project. The only difference between the two projects is that the software voltmeter sends the voltages as a string on the usb port instead of displaying the voltages.
Consider supporting the arduino software by contributing to its development. My guess is that there is a lot of signal conditioning going on that would be difficult to replicate in software. It also doesnt matter much if the software is for avr, pic, or whatever. In the first of them, there is 1nf1% capacitor and in the second 22uh10% inductor. It has a powerful processor, 10 neopixels, mini speaker, infrared receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors. Via arduino nano 33 iot and a php web application, check whether you have a particular book in your library before purchasing by using isbn. For the series lcr circuit in that file, the resonant freq is about 7117hz but the q is only 1. As nice as these other projects are, i wanted to make an lc meter that others could copy and get working without very much trouble. Diy lc meter with frequency measurement freetronics. I searched the web and found a very cute project named lcm3 on this hungarian site. Since our wave is a true sinusoidal wave, it spends equal time above zero volts and below zero volts. Just as long you have the sourcecode for your favourite language. Smart energy monitor based on arduino arduino project hub.
Pin 6 and 7 of max 485 are connected to pins 7 and 14 of the energy meter which are meant for rs485 serial communication. This article describes the design and functioning of a simple circuit using a. Lcmeter with ttl mosfet useful, but not included in final collection. Using this method we are able to calculate inductance about 80uh to 15,000uh, but it should work for inductors a bit smaller or much larger. No relays, no range switching, a minimum of controls. Low cost auto range l c f esr meter electronic project circuit. Lcfesr meter is a precise, autorange meter for measuring inductivity l, capacity c, frequency f and equivalent series resistance of a capacitor incircuit esr based on avr atmega88papu microcontroller. A pretty good lc meter based on the avr microcontroller. A typical lc meter is nothing but a wide range lc oscillator. The device is very sensitive when i put the test leads there is 35 pf reading on display, but it is eliminated with the calibrating button. This article describes the design and functioning of a simple circuit using a 555 timer and a microcontroller. Specifications 100% compatible with arduino ide tools board arduino pro 5v, 16mhz w. A voltmeter measures the electric potential difference between two points in an electric circuit.
That meant that exotic components need to be kept to a minimum, and to me, that means no relays or hardtofind special switches. Despite its modest cost, it offers automatic direct digital measurement over a wide range for both capacitance c and inductance l with. So today we are going to make an inductance lc meter using arduino. Low cost auto range l c f esr meter electronic project.
In the attachments section, you will find a technical ebook explains the project processes from zero to hero. It is good that if you can create a readme file and write some information about those files. This lc meter design is pretty old but since it is a perfectly good device there was no need to designbuilddebug one of my own. The duration of the burst in each cycle, called pwm duty cycle, is defined by the pwm value from 0 to 255 as implemented in arduino where 0 means no burst at all, at. Jul 24, 2011 using an arduino to measure inductance. This integrated motor driver makes interfacing with a microcontroller super easy as you only need two pins to control both the speed and the direction of the stepper motor. A serial monitor voltmeter can be used to display the voltage values on a pc screen. The arduino code is a modified version of the sketch from the arduino lcd voltmeter project. Pic16f628 lc meter circuit electronics projects circuits.
Well this is a very accurate lc meter based on pic 16f628a. An lc meter circuit is used to measure value of a reactive element like a capacitor or an inductor. A microstepping driver such as the a4988 allows higher resolutions by allowing intermediate step locations. Pic16f84 lcd display lc meter electronics projects circuits. Communication over energy meter and arduino uno using. Us tax payers, please note this contribution is not tax deductible. This waveform is affected by the lc circuit, filtered by the comparator chip, then read back out the other side. This design is little different from other designs found on the internet. The arduino nano is a small, complete, and breadboardfriendly board based on the atmega328 arduino nano 3. Open source smart energy monitor with some new features like terminal commands, readings logger, and data plotting. Schematic source code this is the project i am currently working on 20100123.
I have left the pretty good lc meter page intact because it is a complete project and if one wants to build an lc meter based on the attiny23 or at90s23, this is a very good project for that. An even better lc meter based on the avr attiny861 cappels. Arduino sketches are uploaded through any usbserial adapter connected to 6pin icsp female header. Read the information from the lcd voltmeter project for an explanation on how the code works. The lc meter is based on elmcie or elsie and other similar lc meters. When measuring an inductor or capacitor, the added inductance or capacitance changes the oscillators output frequency. For instance, driving a motor in quarterstep mode will. This type of meter, especially l meter is hard to find in cheap commercial multimeters. It has more or less the same functionality of the arduino duemilanove, but in a different package. This project is in a very early prototype stage and is at the moment only capable of measuring inductors. Hello such friends, will show you how to create a measuring inductance, capacitance and resistance using arduino most commonly the atmega328p, all programming is thrown into arduino and components commonly found in our laboratory and will also be very cheap to do so, this meter measures pf to nf and also measuring uh and mh, as well as use a 7805 regulator can be powered from 24v to 6v, i used. Board is supplied by 25v voltage and may be powered by a battery such as lithium ion cell, two aa cells, external power supply or usb power adapter. I am using a schneider energy meter em6400 along with rs485 rs232 lc module and arduino uno.
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