Electronic business card / scroll display. 85 SMD 0805 led’s matrix display, Atmega88V uController, and couple of other smd parts. Dimensions are 24mm x 85mm, supplied from 3V small coin battery. It will work for long time, even on discharged battery (2V). After button is pressed, device is waking-up from power-down mode and start scrolling [...]
HAPPY BIRTHDAY TEHNIK SERVICE
It’s been two years since we launched Tehnik Service and we never expected it to have the enormous success it’s had. Beside that my baby girl Elizabeta is celebrating its first (1) birthday.
Ili na naso kazano Sreken Rodenden. Aj saa da odam da praam TORTA:)
Quick guide to assembling firmware with MPLAB
This is a very quick guide to allow you to assemble and generate the programmer HEX files from source code files downloaded from the Picprojects website. It’s not a comprehensive guide to using the MPLAB IDE and it’s not intended to be…
Source: Picprojects
Company says its new silver-based ink can be used to print electronic circuitry on everything from flexible e-book screens to pill bottles.
The Xerox process actually requires printing three layers on a substrate: a semiconductor, a conductor and a dielectric. The silver ink is the layer that conducts electricity.
Source: Stephen Shankland
This device uses PIC16C54 to control a triac. One push-button has the UP (increase) function, second one has the DOWN function and the third one is for ON-OFF. Button ON will increase the number on LED display from 00 to 99 which represents triac firing in percentages. Triac can power universal load such as light [...]
Temperature range
Display of temperature between -55 and +124 deg C (-67 to 255 deg F)with 0.1 degree resolution between -10 and 100 degrees.
Thermostat settings between 1 and 100 deg C (34 to 212 deg F.)
Features
Simple,cheap,compact design, few components, no surface-mount types.
Uses an accurate digital sensor to avoid the need [...]
This LED clock may not be the easiest to build but surely it is the one with fewer parts that you can find, for that reason I call it “The ANP LED Clock”. (ANP stands for Almost No Parts.)
Using the micro controller PIC 16F84A or the 16F628 (same pinout), this clock have more and [...]
MultiBoard PIC Trainer is a plate trainer multipurpose designed in modular form inspired by the creations of RedPic – picmania.garcia-cuervo.net , Nocturno – www.micropic.es and Ariel Palazzesi – www.ucontrol.com.ar
Source: Sergiols
Circuit test to turn a LCD controller based on NEC ?PD7225G. The microcontroller used is an ATmega48 in DIP package.
Source: Emilio Ficara
The purpose of this timer is to provide a countdown time from 1 second to 99 minutes & 59 seconds. I use it to control the lighting for the Ultra-Violet exposure of photosensitive PCB material. The project provides also an audible alarm at the end of the countdown time and switches the [...]
The device consists of six LED matrix displays 8×8px, so that the overall resolution of the display is 48×8px. Do LED display text can upload a maximum of 128 characters long, that gradually the entire dump gradually slid characters left. Loading text is done using a PC via the serial interface RS-232.
Source: svetelektro
This project allows instant start sequentially but a dozen low-voltage lamps 12 V / 60 W, and makes them fade and always sequentially (but slower). This system has been designed to meet the demand of a visitor who wanted ten recessed low voltage spot in a driveway to his house, with the following function: – [...]
This circuit allows switching on a LED when the battery voltage (12V) drops below a certain threshold. The operating system is based on a comparison of tension, which comes in a zener diode. If the supply voltage is 12V and the zener diode is a 10V model (this is the case in the diagram), we [...]
This is a good looking and practical device that can be useful in many areas where countdown timer is needed. This project is based on the PIC16F84A microcontroller. The time range can be adjusted between 1 and 999 seconds. This project has 3 buttons and one of them is named Set Button. In order to [...]
A VU meter is often included in audio equipment to display a signal level in Volume Units; the device is sometimes also called volume indicator (VI). In this project we are building a basic and low cost LED VU Metre circuit . The extent (range) display is -18 dBu to +3 dBu, spread over [...]
Today we have a new category “Projects” and a new electronic project 12 Channel LED Chaser with PIC16F84A.
This project is based on the popular PIC16f84A micro-controller.The heart of this project LED chaser is the PIC16F84A PIC microcontroller.A 4MHz crystal and capacitors C1 and C2 22pf is used for providing clock pulses to the micro-controller. The [...]
