teardownit

  History and creation reasons Pic from: https://xc3sprog.sourceforge.net/guide.php The project was created by accident at the moment of urgent need for a mobile standalone device for ISP programming and testing a lot of printed circuit boards with controllers and FPGAs. The task was quickly solved on a Raspberry by assembling a small IDC-10 socket adapter with a button and LEDs on a breadboard and installing OpenOCD and xc3sprog packages. It became a solution, after which any thoughts about buying or upgrading another programmer just disappeared. In fact, if you have been working with programmable devices for a long time, you can surely find a whole museum of such devices for flashing (I have a whole drawer of them on my nightstand) - ByteBlaster, Segger, (maybe even several), ST-Link, etc., but there are many of them! These devices are built for LPT, COM, USB... lots of different ones, but here's the trouble - many are already old, unsupported, and incompatible. We'll have ma

  Feature description The INRIKS EX4076KVM is a transmitter and receiver kit that allows HDMI and USB signals to be transmitted over twisted-pair cables for up to 230 feet. Specsheet claims the maximum supported video resolution is 4K at 60 Hz. The transmitter has an HDMI pass-through output port. It can help connect a nearby TV or monitor. The receiver has a digital S/PDIF output for connecting an audio system. The manufacturer does not specify the version of the USB standard. We assume this is USB 1.1, intended for connecting low-speed devices like a regular keyboard and mouse. So, the webcam most likely will not work with such an extender, but we will check it anyway. Let's take a closer look at what's in the box and how everything connects together. Visual overview As usual, INRIKS ships out the EX4076KVM kit in a gray cardboard box with a brief description on a sticker. Inside the box, one finds the transmitter and the receiver neatly tucked in soft-touch plastic baggies.

The awesome Colpitts oscillator. Exploring the secrets of the Colpitts generator. Hello, and welcome to our electronic studies! We probably all know that an oscillating circuit consists of a capacitor (C) and an inductor (L), and its waveform is an ideal sine wave. In the LC resonant circuit, single-frequency oscillations occur, and their period in seconds is equal to 2π√(LC). This equation is called Thomson's formula after its author, William Thomson, aka 1st Baron Kelvin. Many other things are named after him because Lord Kelvin was an outstanding scientist and inventor. One can recall, for example, the Kelvin, a unit of absolute temperature, or the marine compass with sundial he invented. Another thing we know is that a transistor and an operational amplifier amplify the signal, meaning they transform a sin wave with a small amplitude into a sine wave with a bigger amplitude. We had 0.5 volts; it became five volts - ten times as much. However, real electronic devices, even seemi