Introduction This circuit is a data logger that records voltage samples at specific time intervals. I’ve used it to record the voltage discharge curve on NiCad battery packs. The data file can be dropped into a spreadsheet and plotted. I’ve also used it to record the amount of time a possibly defective refrigeration unit was […]
DATA LOGGER measures and stores voltage using PIC16F876 Read More »
Updated 3. Sep. 2002. If you are from Denmark ! read the Danish version !! In the good old days I had some parts but now This Wattmeter is in ELEKTOR MAGAZINE OKTOBER 2002, they will sell PIC and PCB The extra input B is for a later SWR brigde project, also the TX serial
Digital Watt meter using PIC16F876 Read More »
In the same way as the LCD project this frequency counter circuit uses TMR1 in 16 bit counter mode to count the input signal edges. Counter overflows are accumulated to give the total count in multiples of 65536. Adding the current value of the counter at the end gives the total count. Specification of the
50MHz 7 segment frequency counter using PIC16F877A Read More »
A frequency counter is a useful addition to an engineer’s toolbox and you can create the design described on this page for free. All you need is a PIC microcontroller (or any microcontroller that has a high speed timer input module) and a 2 line LCD display (the standard HD44780 one is the one used
Frequency Counter using PIC16F877A Microcontroller Read More »
This post provides a simple digital voltmeter circuit using PIC12F675 microcontroller. This code is written in C language using MPLAB with HI-TECH C compiler. You can download this code from the ‘Downloads‘ section at the bottom of this page. In this post, it is assumed that you know, How to use ADC of PIC12F675 microcontroller. If you
Simple Digital Voltmeter (DVM) using PIC12F675 (Code+Proteus simulation) Read More »
Sine Triangle Square Saw Burst Sweep Noise – runs on a PIC16F870 After the recent demise of our multifunction signal generator, we decided to make one of our own. The circuit uses a PIC16F870 (about $3), an R/2R resistor ladder network (for a real fast and cheap D/A), and a few other parts. You can
Function Generator using PIC16F870 microcontroller Read More »
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. This LC meter design is pretty old but since it is a perfectly good device there was no need to design/build/debug one of my own. So, I just changed the
LC meter using PIC16F628A Microcontroller Read More »
Far and away my most ambitious project to date, this digital oscilloscope can sample up to four channels at a rate up to 100kHz. And the best part? It only cost me about $40 in components. The user interface is an application running on a PC. The user selects the configuration settings here. When the
Digital Oscilloscope using PIC16F688 Read More »
This project comes as a KIT. It includes these components: Low-cost DMM (digital multimeter) M830D TX (transmitter) circuitand wireless module TX-433. These are mounted within the DMM housing. RX (receiving) circuitwith a wireless module RX-433, LCD and piezo buzzer. The general idea is to read all LCD data from a cheap DMM (directly from its
Wireless MultiMeter using PIC18F452 Microcontroller Read More »
Introduction Most of the digital multimeters these days have built-in features for testing diodes and sometimes transistors. The purpose of this project is to demonstrate a simple way to construct a testing device for diodes and bipolar junction transitors (BJTs) using a microcontroller. The testing algorithm is based on a simple fact that a working
Microcontroller based Diode and Bipolar Junction Transistor (BJT) tester using PIC16F688 Read More »
