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) […]
Category Archives: app notes
C2000 Piccolo: F2806x MCU
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 […]
Introduction to computed tomography (CT) medical imaging
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 […]
App Note: LEDs allow new remote-controlled lighting applications
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!
App Note: Overview of industrial motor control Systems
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 […]
Introduction to magnetic resonance imaging (MRI)
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 […]
Building an engineer
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. […]
App note: Digitally controlled DC/DC converter
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 […]
Design a DC to DC switchmode converter
EEVblog has a new video on switchmode DC to DC converters using an MC34063. Via the computer controlled power supply thread in the forum.