The PIC sonar range finder works by transmitting a short pulse of sound at a frequency inaudible to the ear (ultrasonic sound or ultrasound). Afterwards the microcontroller listens for an echo. The time from transmission to echo reception lets you calculate the distance from the object. PIC Sonar Specification Range ~5cm – 300cm Accuracy +/-3cm […]
Sonar range finder using PIC16F88 Microcontroller Read More »
In the first part of this discussion, the features of ACS712 device were briefly discussed. Now we will use that theory to implement the ACS712 sensor to make a simple DC current meter. The analog output voltage from the sensor is measured through an ADC channel of the PIC16F1847 microcontroller. A voltage to current conversion
Introduction Just a handful of components builds an 8-pin microcontroller based circuit for temperature logging via a serial port; small, fast, and acceptably accurate. Features provides real-time data to your computer via serial port, interfaces up to four DS1820 temperature sensors, absolute accuracy near 0.5 degrees celcius (as per DS1820 specifications), relative accuracy near 0.01
Quozl’s Temperature Sensor Project using PIC12C509 Read More »
TD-USB-02 interface with touchpad sensor board and WinAmp interface. This is an example USB project showing how to interface a touchpad sensor (the AD7142ACPZ) with a standard XP/Vista computer. The TD-USB-02 board with a PIC18F2550 communicates with: the PC: USB 2.0 through a mini-B connector. the touchpad sensor board: SPI over 8-wire flatcable. PC WinAmp
TD-USB-02 interface with touchpad sensor board and WinAmp interface using PIC18F2550 Read More »
This is my first instructable…. ever. So here it goes. I own a Kaossilator 2 (KO2). It’s fun little phrase synthesizer and simple looper. But it has this awkward issue with mic button. When you want to record something from microphone you have to hold down two buttons simultaneously. First the mic button to enable
Kaossilator 2 hack: hands free (part 1/2) Read More »
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
TDA7000 FM Receiver / TV Tuner / Aircraft Receiver using pic microcontoller Read More »
Introduction I obtained an early vintage Radiodetection® RD400 “LLTS” Precision Line Trace unit for a very low price through eBay. The RD400 is the receiver portion of a transmitter/receiver pair that comprise an underground cable locator system. Because the matching transmitter was not available (hence the low price,) I had to design one that matched
Underground locator generator for Radiodetection using PIC16F628 Read More »
Sensing and controlling current flow is a fundamental requirement in a wide variety of applications including, over-current protection circuits, battery chargers, switching mode power supplies, digital watt meters, programmable current sources, etc. One of the simplest techniques of sensing current is to place a small value resistance (also known as Shunt resistor) in between the
A brief overview of Allegro ACS712 current sensor using PIC16F1847 (Part 1) Read More »
NEC-SIRCS-JAPAN-RC5-SAMSUNG compatible, multiprotocol infrared remote control. Replaces up to 6 existing remote controls into one. With manual learning function, LED display and/or LCD. 2V6-3V2, low power (sleep function) More protocols will be added later if needed (DENON, DAEWOO, MOTOROLA, RECS80.) Components: PIC16LF877-04/L (4Mhz PLCC Package), 24LC256 EEPROM (low power), 74HC148 encoder (SMD), optional Nokia 3310
Programmable IR remote control using PIC16LF877 Read More »
Microcontroller BoardsRead the temperature in PIC16F/18F Primer Board from temperature sensor ds1820. The PIC16F/18F Primer board uses the ADC pin for reading temperature from temperature sensor ds1820. The reading output is displayed into PC through UART. PIC16F/18F Development Board The PIC16F/18F Development Board is specifically designed to help students to master the required skills in the area
DS18S20 interfacing with pic and avr microcontroller Read More »
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