Author: mixos

A dot matrix RGB LED graphic panel, managed by a FPGA-based controller board that may be separately used as a demoboard, so to evaluate the potential of the on-board Spartan 6. First installment. A FPGA controlled RGB LED MATRIX for Incredible Effects -...

circuitbasics.com has a tutorial on how to access Raspberry Pi with a remote desktop connection. In the previous post, we learned how to set up a WiFi dongle and access the Raspbian command prompt via an SSH client called PuTTY. PuTTY is a great application for accessing the...

In this Arduino project video educ8s.tv is going to build an Arduino Game, a Tic Tac Toe game with a touchscreen. In this video we are going to build an Arduino Tic Tac Toe game. As you can see, we are using a touch screen and we are playing against the computer. A simple game like...

Ken Shirriff has written an article on reverse engineering the ALU of the 8008 microprocessor: A computer’s arithmetic-logic unit (ALU) is the heart of the processor, performing arithmetic and logic operations on data. If you’ve studied digital logic, you’ve probably learned...

runtimeprojects.com has a quick review of the Digispark board. It's a really interesting mini board that can be used in small projects using Arduino IDE. In today’s blog post we’ll analyze one of the smallest and most practical boards out there. The Digispark board. It’s size,...

The circuit provided here is a transformer-less non-isolated power supply which is capable of delivering an output of 12V at 120mA current for an input voltage varying from 85VAC-265VAC. The LNK304 is the heart of this circuit which supports buck boost and flyback topologies. This...

by Graham Prophet @ edn-europe.com: With precision and high input linearity in a single high-performance device, Texas Instruments says it has the first operational amplifier (op amp) to offer both zero-drift and zero-crossover technology. The OPA388 op amp maintains high precision...

Teardown and analysis of a Peaktech 6225A power supply from ElectroBob: I got a Peaktech 6225A power supply to power some things, as it seemed like a good deal, going beyond what one might find normally in these types of supplies: more display resolution and supposedly, lower noise....