This is an lc meter designed by vk3bhr and presented here. An incircuit serial programming icsp header is provided so. Pic 16f628 frequency counter with rs232 output in a db9 backshell by jan panteltje. Here is the description of a simple capacitance and inductance meter, easy to build, based around a pic microcontroler. Pic16f628aip microchip technology integrated circuits. Special edition lc meter kit includes top notch high precision components that are only found in premium quality kits. The power supply pins and the io ports of the pic16f628a microcontroller are accessed through male headers. This project may not be repeated with pic16f628a as this pic does not have.
The reference manual should be considered a complementary document to this data sheet, and is highly recommended reading for a better understanding of the. Construction of an apparel that allows measure inductors inductimeter and capacitors capacimeter, knower like lc meter, using pic 16f84 or 16f628 and display marries in lcd. Here is my somewhat pessimistic take on these things, the results of others may vary as long as you understand that even in the best sense they are sparkfun type items for the hobbyist and not serious testmeasurement tools youll be ok and maybe even enjoy the experience a bit. All accurate lc meter kits already come with microcontroller that is already programmed and ready to be used.
It would make life a bit easier when attempting to identify a few of those components that are always left over on the desk after building a project. Practical electronics pic lcf meter modifications calatron. Todo o funcionamento da biblioteca assim como sua construcao pode ser vista no primeiro post conectando um display lcd no pic. Thats the only way to be 100% sure what is supposed to be going on. For more details of measuring frequency with timers, see my article frequency counter. The project also incorporated autocalibration by shorting the test leads. The group of handyman met to manufacture a lcf meter. The pic16f628a contain es micro controllers with nano watt technology thats one difference. The precision is very good and even better than many commercial lcmeter. There is no need to hold tester while measuring, more convenient operation. An improved inductance capacitance meter by phil rice vk3bhr. Knacro lc100a digital lcd high precision inductance capacitance l c meter accuracy 1%. Heres another breadboard module that carries a pic16f628a microcontroller.
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used i n the intended manner and under normal conditions. Mplab x integrated development environment ide mplabxide mplab x integrated development environment ide is an expandable, highly configurable software program that incorporates powerful tools to help you discover, configure, develop, debug and qualify embedded designs for most of microchips microcontrollers, microprocessors and digital signal controllers. The goal of my hard work is to people get success in a. Additional information may be found in the picmicro midrange reference manual, ds33023, which may be downloaded from the microchip website. The revised software checks for the presence or absence of a 1k resistor from pin 11 of the pic to ground. Well this is a very accurate lc meter based on pic 16f628a. This project caught my attention as a replacement for a rather old and large marconi lcr bridge, having purchased the pcb and obtained all the parts plus programming the pic from the downloaded file at the p. This design is little different from other designs found on the internet. The original description has been done by phil rice vk3bhr on his pages. So, someone figured out how to automate the bios bruteforce crack. I suppose i could have wound that myself but how to measure it without a meter. Capacitance meter with microchips pic 16f628a and dem 16216sgh. May 25, 2017 this design is a simple lc meter that accurately measures the inductance and capacitance. In this section we will explore how to use the microchip pic mostly the 16f628a and the 12f683.
Special edition accurate lc meter is designed for professionals that require unprecedented measurement accuracy and offers great value at low cost. It measures ower 1uf exactly the double capacity, so 2cap. Voltmeter and ammeter can be easily made using pic microcontroller having adc analog to. The project utilizes a pic16f84a microcontroller to produce one of the most accurate and simplest lc inductancecapacitance meter which allows direct measurements of small inductance starting from 10nh to nh, 1uh to uh, 1mh to 100mh, and 0. Pic16f84a microcontroller based lc meter eeweb community. While the previous section on the pic18f2550 was written in c, here ill use only assembly language related youtube video. The another thing is, that when i turn on the unit, it displays capacitor time out message. Lc meter using a microchip pic 16f628a hacked gadgets diy. Posted on october 2, 2014 by rb leave a comment diy lc meter projects are very popular among hobbyists and students. Pic16f628a 2048 224 128 16 1 y 2 21 pic16f648a 4096 256 256 16 1 y 2 21 18pin flashbased, 8bit cmos microcontrollers with nanowatt technology. If you look closely you can see the crack on the assembled board in the next.
It can be easily plugged into a breadboard and is very useful for quick. Microchip pic16f628 assembly code programs tutorial. Posted on december 3, 2010 by rb 18 comments heres another breadboard module that carries a pic16f628a microcontroller. Pic16f628a ip pic pic 16f microcontroller ic 8bit 20mhz 3. When placing orders, please use this page of the data sheet to specify the correct part number. Here is another lc meter project which is based on pic16f628a microcontroller. This is an lc meter designed by vk3bhr and presented here another project mostly from my junkbox i just needed the 16f628 and 100mh inductor from digikey. Upon opening them you will notice instantly that the titles have been changed. Posted tuesday, march, 2012 the project came from a famous lc meter with a few modifications such as changing the original firmware and adding few electronic goodies for more compact shape. This neat little circuit provides 8 leds directly driven from the pic along with a single mode control switch. It is upward compatible with the pic16f628, pic16c62xa, pic16c5x and pic12cxxx devices. 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. It uses a tank oscillator circuit combining a few external components and pics internal comparator module. I am working on the epe magazine lcf meter project recently using a pic16f628a.
Microchip pic16f628a, led blinking code using c language, time delay 600 milliseconds to 1 second. It can be easily plugged into a breadboard and is very useful for quick prototyping. Muito obrigado pelos tutoriais, recebi hoje o meu programador e consegui meter a funcionar. Knacro lc100a digital lcd high precision inductance. The circuit is well explained with diagrams and the source code written in embedded c language is available for download. Sound card lcr meter miniapp with esr, df, and q daqarta. My previous trials are showing 0v output from the pins 1,6,7,8,9,10,11,this means all the data ports and lcd ports are inactive.
Basically, the specs advertised are similar to the lcf meter i built, but mine has. The two web pages below are the data sheets for the pic16f628a. The design specifically uses the pic16f628a microcontroller of microchip, which is. In this article, we have come up with a new pic micro controller project. Our author mithun has created a digital voltmeter circuit using pic16f73a and multiplexed 7 segment displays. This lc meter was built using a microchip pic 16f628a. We dont share your credit card details with thirdparty sellers, and we dont sell your information to others. The goal of my hard work is to people get success in a single try. A popular lm311 ic is used by the lc meter that functions as a frequency generator which is needed in this project. Capacitance meter with microchips pic 16f628a and dem 16216sgh some time ago i found a nice blog about creating a capacitance meter with the pic16f628a by roman black. The inputs are specified up to 50mhz, which can be stretched by adding a prescaler. The frequency is displayed on line 1 by 7 digits with leading zeros removed down to 3 digits.
Diy lc meter projects are very popular among hobbyists and students. Posted tuesday, march, 2012 the project came from a famous lc meter with a few modifications such as changing the. While the previous section on the pic18f2550 was written in c, here ill use only assembly language. A frequency will be generated by the lm311 which can be measured with a frequency meter. Microchip pic16f628a, led blinking code using c language. Posted in clock hackstagged clock, multimeter clock, voltmeter. Features include a 4 mhz internal oscillator, 128 bytes eeprom data memory, capturecomparepwm, usart, 2. The lc tank will continue to oscillate at fo, as it is driven from the output through r4.
It has an auto ranging system, which can measure 10nh to 100mh range of inductance and 0. Im not much acquainted with the programs, but i would like to know which pins of the pic are hi and which pins are lo after we turn on the circuit. Thanks to the use of lcd connectors lcd display can be detached from the main pcb board at any time even after the kit has been assembled. The led stays lit at the specified pin and does not blink. The lcd and driver module is a 2 lines 16 characters, it has 14 way connector.
Jan 23, 2020 the good and high precision capacitor meter capacimeter inductor meter inductimeter auto range lc meter for pic 16f84 or pic 16f628 and display lcd by phill rice. Lc meter using a microchip pic 16f628a hacked gadgets. A pic16f84a has one 8bit hardware timer tmr0 while a pic16f628a has the same thing plus two additional timers tmr1 16bit and tmr2 which is 8bit. The firmware elsewhere on this page drives the leds with a 5 bit pwm signal providing each of the 8 led channels with four levels of intensity. The voltage is displayed in an hd44780based character lcd. 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. This allows the same device to be used for prototype development, pilot programs and production. This page generated automatically by the devicehelp. A pf capacitor should be used if the value of the unknown inductor needs to be calculated. I am using pic16f877a and the result is displayed on an lcd display.
Before pic16f628a microcontroller can be used it has to be programmed with a hex code which has to be sent from the computer. Very accurate lc meter based on pic16f628a using pic. Another project mostly from my junkbox i just needed the 16f628 and 100mh inductor from digikey. I happened to have some 74as74 flipflops, which go up to more than 100mhz, which becomes therefore the defacto maximum frequency of my version. Mine are often dumped into a miscellaneous box with other various components which makes it even more difficult to identify later. Using pic16f628a for a modified lc meter eeweb community. The good and high precision capacitor meter capacimeter inductor meter inductimeter auto range lc meter for pic 16f84 or pic 16f628 and display lcd by phill rice. Our payment security system encrypts your information during transmission.
This design is a simple lc meter that accurately measures the inductance and capacitance. I finished my lcf meter from epe, but i have problems with it. On the electronic side of things, its all run by a pic16f628a, which controls. The meter shows a resistance value, plus a capacitance or inductance value. Apr 30, 2014 here is the description of a simple capacitance and inductance meter, easy to build, based around a pic microcontroler. The l and c values are computed from the resonant frequency of the lc tank circuit. I liked the simplicity, but unfortunately i did not have the 16 mhz crystal and only the hex file was available for download. Having inspired from surprisingly accurate lc meter. Cracking bios passwords is usually done by reading a bios chip with a programmer and extracting the password from it.
The circuit is well explained with diagrams and the source code written in embedded c. Special edition accurate lc meter kit electronic schematics for hobbyists the source free fm transmitter related schematics, circuits, diagrams, projects, pcbs and tutorials. Sep 17, 2011 this lc meter was built using a microchip pic 16f628a it would make life a bit easier when attempting to identify a few of those components that are always left over on the desk after building a project. A further advantage of the electricallyerasable flash. Voltmeter and ammeter using pic microcontroller electrosome. Accurate lc meter kit this kit comes with all the components including programmed pic16f628a microcontroller chip, lcd display with green backlight, switches and all the other components that are. An attiny10 dvm and dfm allinone with an i2c lcd display and a minimum of other components. Yet another lc meter using pic16f628a embedded lab.
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