Beagle Board – Create Open Embedded Devices

 Embedded  No Responses »
Aug 182009
 

Beagle Board – Create Open Embedded Devices

BeagleBoard.org – Creating powerful, open, and embedded devices.

“The Beagle Board is a low-cost, fan-less single-board computer based on Texas Instruments OMAP35x processors featuring the ARM Cortex-A8 core”

The USB-powered Beagle Board is a low-cost, fan-less single board computer that unleashes laptop-like performance and expandability without the bulk, expense, or noise of typical desktop machines.

OMAP3530 processor highlights:

Over 1,200 Dhrystone MIPS using the superscalar ARM Cortex-A8 with highly accurate branch prediction and 256KB L2 cache running at up to 600MHz. HD video capable TMS320C64x+ DSP for versatile signal processing at up to 430MHz.

Buy a BeagleBoard at Digikey

Some Projects on BB

beaglelab – BeagleLAB is an Embedded Developer’s Workbench

BeagleBot – Beagle powered robot – A small experimental robot with Beagle Board as it’s heart.

 Posted by delabs at 12:40 pm

Lighting LED Driving Solutions from ROHM

 Power Electronics  No Responses »
Aug 172009
 

ROHM’s High Efficiency LED Lighting Solution

Lighting LED Solutions OHM

ROHM products include DC/DC and AC/DC Converters which are ideal for Consumer LED Lighting. High Efficiency LED Drivers are also in the Product line.

“Uniform, shadow-free light (fluorescent type LEDs) A proprietary design consisting of a large number of medium-power LEDs creates uniform, shadow-free light.”

The Industry’s Thinnest LED Base Lighting Device

Some Features of the R-CK001 LED Base Lighting Unit

  • Seamless design – even edge-to-edge illumination
  • 38mm thin
  • Provides a luminance of 380lx
  • Power consumption 24W
  • Proprietary high efficiency 85%
  • Long life: 40,000 hours

ROHM Semiconductor and Modules. System LSI, discrete components and module products, utilizing the latest in semiconductor technology. Interface – @ROHMsemi

ROHM – Electronic Components

 Posted by delabs at 6:45 am  Tagged with:

Mixed Circuits Analog with Digital

 Analog Design  No Responses »
Aug 072009
 

Mixed Circuits Analog with Digital Here are some circuits that have both Analog and Digital Signals in them. At one time i wanted to make reed relays, it was a good spot to be in, as it was used in Telecommunications. Even Small Office EPABX systems would have quite a Few of them. It was Simple, get some reeds from OKI and wrap them up in some copper coil and Pot them in a plastic can with epoxy. Before i could get even some trials out, the market was flooded with Good Quality Reed Relays from many. So the Lesson, [Read More ....]

 Posted by delabs at 7:20 am  Tagged with:

Instrumentation and Measurement Circuits

 Instrumentation  No Responses »
Aug 062009
 

Instrumentation and Measurement Circuits T&M and Process Control Instrumentation have many things in common; but the conditions in which a Industrial Instrument works, may be very unfriendly. Industrial Instruments are used both in Clean-Cool Control Rooms and also in a corrosive, humid, hot and vibrating industrial environment. Even high levels of Static, Magnetic influences in conjunction with spikes and brown outs can be expected. Test and Measurement instruments are of two types, by way of its usage; Portable and Benchtop. Portable Instruments will consume low power, insulated and rugged. The Product Safety features are more stringent as they are HandHeld [Read More ....]

 Posted by delabs at 2:08 pm

Electric double layer capacitor an eFlywheel

 Discrete Passive, Power Electronics  No Responses »
Aug 042009
 

The Electric double layer capacitor has the main use of a Charge Reservoir. That means a large amount of electrical charge in a small footprint. These charge/discharge quickly unlike the battery, There is no Electrical Energy to Chemical Energy Transformation and back, like in batteries. It may need caution in design and usage as they may carry a lot of punch. Also known as Ultracap, Goldcap, Supercap – Electric double layer capacitor, In Farads, like batteries, Energy Reservoirs or eFlywheel. In Product Safety terms; The Battery has a Internal Resistance, but a Supercap does not. When used in Values like [Read More ....]

 Posted by delabs at 10:33 am

Battery Charger and Rechargeable Batteries

 Power Electronics  No Responses »
Aug 042009
 
Battery Charger and Rechargeable Batteries

The main Types of Rechargeable Batteries are NiCd – Lead Acid – NiMH – Lithium ion. The Gel Lead Acid Battery is Termed Maintenance Free and may have to be treated differently for charging. List of battery sizes – Wikipedia 4.5 Volt – D – C – AA – AAA – 9 Volt – SR41/AG3 – SR44/AG13 Battery Charger Circuits and Resources Battery Charger for Gelled Lead Acid Solar charger for lead-acid batteries 12 Volt Gel Cell Charger Temperature Controlled NiCd Charger Battery charger 150-1700 mAh with PIC16F876 Rechargeable Batteries and Chargers Typical Rechargeable Flashlight Schematics User-Configurable Programmable Lead Acid [Read More ....]

 Posted by delabs at 8:40 am  Tagged with:

Interface ICL7135 Voltmeter to Atmel 89C52 or PC

 Circuits, Embedded  No Responses »
Aug 022009
 

This circuit is an interface between 89C52 of Atmel with 7135 of Intersil. With This circuit you can read analog data of both polarities you can change the range scale with extra circuits, you can store data on a EEPROM or send them to PC thru RS232 or Comm port. ICL7135 to Printer port Interface The four Digit Drive outputs and four BCD outputs of the Multiplexed Display Driver of 7135, along with A-D status output which is also four, are routed to four input pins on printer port via three 74HCT373 Digital Switches. This is because we have less [Read More ....]

 Posted by delabs at 8:01 pm
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