4 Wheel Robot Motor Driver ( 4X 3Amps LMD18201 H-Bridge)
This compact board will help you to drive 4 Wheel Drive Robots, each axis can handle a load current up to 3 Amps and supply 12V – 48 V DC. Board requires two PWM and Dir. signals for full 4WD operations, mainly differential steering for taking turns left or right or complete 360...
Continue ReadingMulti-brightness LED controller draws zero off-current
T A Babu @ edn.com has a design idea of a led controller with some nice features: The key features of this Design Idea are: Soft switch on/off operation Zero current drain in sleep mode Two level dimming Low battery protection Simple controller based on CMOS 4017...
Continue ReadingAccelerometers for vibration measurements & wireless condition monitoring
Graham Prophet @ eedesignnewseurope.com discuss about two new MEMS accelerometers from Analog Devices: Analog Devices (ADI) has added two devices to its low noise, low drift, low power, three-axis MEMS accelerometers. The low noise performance over high frequencies provided by the...
Continue ReadingOpen Source UV Index Detector
Boris Landoni @ open-electronics.org documents his UV index detector. It measures solar radiation and visualizes the corresponding value on the integrated display of a miniaturized Arduino, in order to tell us when to expose ourselves to the sun… Open Source UV Index Detector -...
Continue ReadingSEPIC/Ćuk converter sprouts second output
by Gheorghe Plasoianu @ edn.com Many applications require positive and negative supply voltages, with only one voltage requiring tight regulation. This Design Idea describes a dual-output, hybrid SEPIC-Ćuk converter whose positive output voltage can be lesser or greater than the...
Continue ReadingReverse engineering the 76477 sound effect chip
Ken Shirriff has written an article on reverse engineering the 76477 “Space Invaders” sound effect chip: Remember the old video game Space Invaders? Some of its sound effects were provided by a chip called the 76477 Complex Sound Generation chip. While the sound effects1 produced...
Continue ReadingFree PADS PCB packages from Mentor/Digi-Key
by Graham Prophet @ eedesignnewseurope.com: Two versions of the PADS software package (by Mentor, now a Siemens business) have been made available through distributor Digi-Key. Positioned as design software for “the aspiring innovator” both the free and the $499 versions include...
Continue ReadingEmbedded vision development kit targets mobile & ‘edge’ applications
by Graham Prophet @ eedesignnewseurope.com: Lattice Semiconductor positions its Embedded Vision Development Kit as the first of its type, that is optimized for mobile-influenced system designs that require flexible, low cost, and low power image processing architectures, by which the...
Continue Reading