August 2019
Hammerhead PI metal detector
“Hammerhead” is a pulse induction (PI) metal detector design. It is intended primarily as a learning platform for experimenters, and as a base design on which to expand. This design is very much like other commercial PI detectors, which tend to have similar circuit designs, so it has the potential for good performance.This project includes …
Tracker PI-2 metal detector
The microcontroller-based pulse induction metal detector Tracker PI appeared on the market back in 2003, and immediately gained immense popularity among users. Then the circuit received some improvements, and several versions of firmware were released including and deep and from the “first Tracer” appeared Tracker PI-2, Koschey 2I and Koschey 4IG. Koschey 2And this is …
Terminator 3 metal detector
Terminator 3 metal detector Terminator 3 is a coin searching metal detector that operates according to the induction balance principle (IB). The “Terminator-3” scheme was developed based on the Tesoro metal detector. However, there are significant differences from these metal detectors, both in its work principle, in the process of its manufacture or configuration. The …
Toner Transfer PCB method
In this article I will describe the laser Print -iron method (Toner Transfer method) for the production of printed circuit boards PCB, which I myself have been using for quite some time. This method is described on many sites, but since you can already read on my site right here. Toner transfer method Step 1. …
AVR-910 programmer
This USB programmer is built on the Atmega8 microcontroller, it is easy to manufacture, it can be assembled with your own hands. In fact, this is the AVR-910 of the popular scheme. USB programmer is reliable and has in its a magic function that allows you to recover microcontrollers with incorrectly installed firmwares. It should …
Chance PI assembling
The “Chance PI” metal detector uses the 1602 LCD display. We will connect the display to the microcontroller on the board via a 4-bit parallel interface. Chance PI assembling process. I will reproduce part of the scheme with the connection of the display. You can use a cable from the HDD drive as the wires …
Spider coil
According to reviews on the Internet, the spider coil can work with any pulsed metal detectors, but for proper processing of discrimination and selection, you need to make the coil as close as possible to the parameters of the author’s coil. The result should be a coil with a small parasitic capacitance, with the following …
AVR Serial programmer 2
If you want to work with the AVR micro-controllers, you have to get a programmer. This article describes the simplest ISP programmer for AVR microcontrollers that works with a convenient program for flashing UniProf controllers (AVR serial Programmer). This programmer is referenced to page: Link The version PCB layout of the programmer under SMD components …