After taking apart dozens of disposable cameras over the years, I found myself with a lot of lenses of varying sizes and nothing to use them for… until now! By making a simple carriage that would hold the lens and attach to my iPhone via rubber band, I was able to make a virtually free […]
Interfacing DS1307 to PIC Microcontroller with C code and Circuit Diagram This tutorial explains how to interface the DS1307 Real Time Clock (RTC) with a PIC16F877 microcontroller. The project is compiled using the CCS compiler and simulated in Proteus. The DS1307 communicates with the PIC microcontroller through the I2C protocol, which is a two-wire, serial, […]
Game rules You will have to memorize a melody, made of up to 62 steps. A step is one of the four tones available in the game system. In order to help you, each tone is associated to a color LED (yellow, green, orange, red) which lights each time the tone is played. The game […]
This project is an extension of my previous MAX7219 based SPI seven segment LED display module. The new display features eight 7-segment displays arranged in two rows of four digits. The on-board MAX7219 driver enables you to easily add eight 7-segment LED displays to your project using only 3 I/O pins of microcontroller. The major […]
Parts: 1x TDA7000 IC – FM Receiver 1x 3.5 Turns Variable Coil (L1) 1x MV2105 – Varicap Diode ANT – Telescopic Antenna or a piece of wire 1x 100K Potentiometer 1x 100K Resistor 1 x 22K Resistor 3x 100nF Capacitor 1x 22nF Capacitor 1x 10nF Capacitor 2x 3.3nF Capacitor 1x 2.2nF Capacitor 1x 1nF Capacitor […]
For one reason or another I really like to use breadboards for building prototype designs. The breadboard offers superior flexibility in that you can change a single electrical connection at any time, as long as you have a long enough wire. One of the draw backs of the breadboard is that you tend to build […]
In This Post we discuss about How to build a Refregirator Temperature Controller using Microcontroller. This Project is Development of Thermo meter project. Suggested Page>> MIcrocontroller Based Thermo meter project Mainly we use Mikro C Programming Language in this Project and ISIS Proteus Software use for testing Purposes. How to Work Refregirator Temperature Controller. You […]
Step 1: Assembling the Double Gearbox A basic hobby motor turning at 12,300 RPM is basically useless without a good gearbox. Just touching the shaft will stall the motor. I obtained a Tamiya double gearbox kit for under $10, which through a series of gears provided a ratio of 114.7:1 at 115RPM. There were a […]
Single microcontroller based 12v to 230v inverter with intelligent battery charging (Made by me) Here I describe the circuit as: *single microcontroller/controller (ATMEGA16/32) *no op-amps, only chips are the micro, opto-couplers and regulator (7805) *low-battery/overload/short-circuit protection *thyristor controlled battery charger, using the MOSFET body diode as the AC-DC rectifier *charger maintains the battery voltage (top) […]
Circuit Description The LED cube is made up from 125 LEDs arranged into 5 layers of 25 LEDs each. The display itself is multiplexed so instead of requiring 125 connections it requires one to each of the five layers and 25 to each LED in a layer making a total of 30. The cube is […]
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