Introduction Our project was an EEG-controlled brain computer interface that allowed a user to correct errors in machine behavior. The project was modeled as a trial-based “game.” In each trial, a solid colored green block or dotted yellow block was placed on a conveyor belt. One end of the conveyor belt had a solid colored …
Measurement and control of temperature and relative humidity finds applications in numerous areas. These days devices are available which have both temperature and humidity sensors with signal conditioning, ADC, calibration and communication interface all built inside them. The use of such smart sensors greatly simplify the design and reduces the overall cost. We discussed in …
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 …
A brief overview of Allegro ACS712 current sensor using PIC16F1847 (Part 2) Read More »
The device used for measuring daily insolation has been developed. The device was built with a PIC18F458 and the 128MB Multimedia Memory Card, MMC. The solar radiation is measured by a calculator solar cell. The PIC chip interfaces the MMC using SPI mode. The interval between samples is set to one minute. The firmware detects …
2. Counter The whole counter design is based on the PIC micro-controller 16F876A. The latter includes several peripherals and just a few of them are used in this project. The most important in this project are two internal, hardware counters/timers called TMR0 and TMR1. The TMR0 timer generates very precise interrupts every 100 microseconds (10kHz) …
Simple RF/Microwave Frequency Counter using PIC16F876A Read More »
This is a test project built hastily on a solder less breadboard. It uses a LM75 to read the current temperature via I2C and displays the result on three 7 segment displays. It uses a PIC16F628 with an internal 4 Mhz clock. The program was created using JAL Note the LM75 is a surface mount …
LM75 Temperature Sensor with 7 segment display output using PIC16F628 Read More »
I’ve wanted to build a sonar for a while now, and I was hoping to be able to do it with a design someone else had made, but alas, I’ve never had much luck. I’ve done many searches of web pages, and all that ever comes up are sonars that give a single range to …
PIC Based Imaging Sonar using PIC16F84 microcontroller Read More »
Frequency Detector using PIC 12F683 Processor This project describes hardware and software I have developed which allows a small 8 bit PIC microprocessor to function as a single frequency detector or tone decoder. Such a circuit can be used to detect the presence of a certain frequency within an analog signal, such as an audio …
DTMF Touch Tone Decoder Using Microchip PIC Microprocessor This project contains the details of using a Microchip PIC12F683 8 bit microprocessor to detect DTMF tones. The completed program allows the processor to be programmed with a string of DTMF tones to detect. If the programmed string is detected in the audio applied the audio input, …
DTMF Touch Tone Decoder Using Microchip PIC Microprocessor using PIC12F683 Read More »
Assembly using the chipKIT DP32 Board Unless you dug up a dusty chipKit DP32 in the back of one of your electronics junk drawers (or I unloaded the last one I have), what’s in here is mostly irrelevant. Go (back) to Assembly using SG-µMD1. Electronic Parts List using the chipKit DP32 The following are the components …
Assembly Instructions for the µMD1 using the Digilent chipKit DP32 Read More »
