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Pony programmer

Download schema pcb Pony programmer
Download schema pcb for 16F84, 12C50x, 24Cxx i SDE2506
Download schema pcb for 16F84, 12C50x i 24Cxx

The simplest eeprom programmer

This design uses only two resistors to program any IIC serial eprom. It is connected to a PC serial port. I’ve succesfully built it for a 24C16 part, but it should work with both smaller and bigger chips (24C02 24C08 24C32 24C65 etc.). It is driven by the Claudio Lanconelli’s PONY PROG free windows [...]

Programator 24Cxxx

C1 – 47uF 10V
C2 – 0.1uF
D1, D2 i D3 – Zener 4.7V
D4 – LED
D5, D6 i D7 – Diodos 1N4148
R1 i R2 – 4K7 ohm
R3 – 390 ohm

FM Telephone Bug

Here is a simple transmitter that when connected to a phone line, will transmit anything on that line (execpt the dial tone) to any FM radio. The frequency can be tuned from 88 to about 94Mhz and the range is about 200 feet. It is extremely easy to build and is therefore a good, useful [...]

100W Audio Amplifier

PLEASE READ THIS BEFORE YOU START CONSTRUCTION
To cater for those who wish to use 4 ohm speakers with this amplifier the Kit includes the necessary components for both versions. The components that differ are R3,4,17 and 23. If you build the 8 ohm version then you must also include in the circuit R28 and D7, [...]

Simple Fm Transmitter

Small Fm Transmitter

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10 Channel Chaser for 12V/60W lamps with PIC16F628A

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: – [...]

Battery Level Indicator

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 [...]

Timer from 1 to 999s with PIC16F84A

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 [...]

8 LED VU Meter Project

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 [...]

12 Channel LED Chaser with PIC16F84A

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 [...]

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Tehnik Service blog launched in 2007. This blog is built for educational purpose to help you to be informed about all the news come from around the world in the field of electronics.