The TCS8418 is an I2C controlled keypad scan chip for up to 80 buttons: • Operating Power-Supply Voltage Range of 1.65 V to 3.6 V • Supports QWERTY Keypad Operation Plus GPIO Expansion • 18 GPIOs Can Be Configured into Eight Inputs and Ten Outputs to Support an 8 × 10 Keypad Array (80 Buttons) […]
rsdio tipped us to the floating-point Piccolo MCUs from Texas Instruments: C2000™ Piccolo MCUs offer an enhanced math engine specifically designed to simplify programming and optimize performance in real-time control applications that may require integrated communications. Developers of energy-efficient motor control and renewable energy applications can now use a single F2806x MCU to cost-effectively execute […]
rsdio tipped us to an app note on a computed tomography (CT) medical imaging. This tutorial explains how computed tomography (CT) imaging systems generate 3-D images of internal body structures. The high-end spiral CT technique is explained, as is the method by which light collected from photodiodes is processed into an electrical signal and eventually […]
A remote-controlled lightning applications: One benefit LEDs offer in general lighting applications is that they are easier to control remotely. This application note describes a remote-controlled architectural or street-lighting system and describes how to implement power-line or wireless communications control of a lighting system. Thanks for the tip rsdio!
An overview of industrial motor control systems: This overview of industrial motor controls highlights the differences and subsystems for DC motor, brushless DC, and AC induction motors. An in-depth analysis of critical subsystems focuses on monitoring and measuring current; sensing temperature; sensing motor speed, position, and movement; monitoring and controlling multichannel currents and voltages; and […]
rsdio tipped us to an app note on magnetic resonance imaging (MRI). This tutorial explains how magnetic resonance imaging (MRI) systems use the reaction of hydrogen atoms moving in a magnetic field to yield a detailed medical image. The types of magnetic fields typically used are described. The note explains why today’s higher resolution MRI […]
Jeremy presented what it really means to be an engineer. We all know that engineers build things, but what does it take to build an engineer? In this video, I talk about my open source hardware projects, how I became an engineer, and how I work to get other people involved with engineering and science. […]
A digitally controlled DC to DC converter: You can easily add margining capability (digital adjustment of the output voltage) to a DC/DC converter by adding a 2- or 4-channel, I²C-adjustable current DAC (DS4402 or DS4404) at the converter’s feedback input. Because each DAC output is 0mA at power up, the extra circuitry is transparent to […]
EEVblog has a new video on switchmode DC to DC converters using an MC34063. Via the computer controlled power supply thread in the forum.