You can buy ready-made programmers, but why spend money when you can build it yourself from parts that you have lying around The simple SI-Prog doesn`t require that many parts and is supported by several popular pieces of software. The full SI-Prog is designed to work with a variety of different chip types, as well as provide power to the microco
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ntroller that it`s programming. If one assumes that we`re only going to be programming AVRs and powering the circuit ourselves then it can be simplified quite considerably! I`m using the circuit from the AVR Programmer page on Electronics-DIY. com. The circuit diagram is replicated below. The DE-9 connector plugs into your PC`s serial port, and so should be a standard female connector. For the in circuit serial programmer (ICSP) side, I recommend using a six-way single row pin socket - you can then put a matching pin header on your circuit board (or plugged into your breadboard) to allow you to quickly and easily connect and disconnect the programmer. The nearest-sized sockets and headers I found were eight-way, but you should be able to cut them to size with a sharp pair of wire cutters. Now that you have a programmer, you need some way to test it. A suitable circuit for the ATmega168 is illustrated below: the programming header is connected to the AVR`s RESET (1), MOSI (17), MISO (18) and SCK (19) lines, as well as its power supply ” both VCC (7) and AVCC (20) are connected, as well as GND (7). Consult the ATmega168 data sheet for more pin definitions. The pins in pin headers usually have one long end and one short end either side of the insulating block. You may find that they spring out of breadboards if you put the short end in first, or fail to make a proper connection to the programming header if you put the long end...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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