educ8s.tv shows us how to build a graphical user interface on Raspberry Pi using TkInter and Python. Having a Graphical User Interface (GUI) on a touch screen makes controlling your Raspberry Pi so much easier. With Python and TkInter one can develop his own GUI very easily. In this...

In this episode, Shahriar and Shayan discuss the design and characterization of a deceptively simple CMOS inverter-based transimpedance amplifier. The the large and small signal behavior of the CMOS inverter is discussed and measured using the Keithley 2450 and 2460 source meters. The...

Linear Technology Corporation announces the LT3091, the latest addition to our LDO+ family, a 1.5 A low dropout negative linear regulator featuring low noise, rail-to-rail operation, precision programmable current limit and a bidirectional output current monitor. The device is...

Dual Motor L298 H-Bridge Control project can control two DC motors connected to it. The circuit has been designed around popular dual H-Bridge L298 from ST. This circuit has current sense resistors for both H-bridges to provide voltage which enables this board to use in stepper motor...

The MKR1000 development board from Arduino provides a simple way to add wireless connectivity to IoT battery-powered projects. Arduino MKR1000 is based on the Atmel ATSAMW25 SoC (System on Chip), that is part of the SmartConnect family of Atmel Wireless devices, specifically designed...

AtomicZombie @ avrfreaks.net used an ATtiny85 ATMEL microcontroller to produce a 170x240 VGA signal and also send audio along with video. The original plan was to just bit bang some mono VGA and do up a Pong or Tetris game, but things went MUCH MUCH further than I ever thought...

Frederick @ frederickvandenbosch.be has build an Internet connected OLED display using Raspberry Pi Zero module. After last week’s Pi Zero mod, I thought I’d try a slightly more useful project. Using an Adafruit OLED display, two push buttons, a wifi dongle and a Pi Zero, I made...

sspence @ instructables.com shows how to interface a character LCD using I2C and only two IO pins. The typical parallel LCD used with an Arduino (16x2 or 20x4) has 16 pins. Only 6 I/O pins are required on the Arduino, but what if you could get that down to two I/O pins, and still...