Atmel’s latest processor uses less juice

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by Martin Cooke @ elektormagazine.com:

Atmel has announced a new series of Atmel | SMART ARM® Cortex®-A5-based microprocessors (MPUs). Firmly targeted at IoT applications they are said to deliver the world’s lowest power consumption for all MPUs in their class. They deliver sub 200 µA in retention mode with context preserved, 30 µs ultra-fast wake-up and a new backup mode with DDR in self-refresh at only 50 µA. Among the built-in features of the Atmel | SMART SAMA5D2 series includes a complete audio subsystem, lower pin-count and ultra-small package. The integrated PCI-level security capabilities will find applications in IoT devices, wearables and point of sale (POS) equipment.

Atmel’s latest processor uses less juice – [Link]

RELATED POSTS

Simple Infrared Barrier

Fig0047

by Maurizio @ dev.emcelettronica.com:

Although a remote control is not so difficult to design and build, there is an even simpler option: the IR barrier. This consists of a constant IR signal permanently going from an emitter to a receiver, both of them being in two different places (a few meters apart). When an obstacle comes in between the emitter and the receiver, the IR signal is blocked and the receiver senses that it is missing, flagging the event in an appropriate manner (figure 1).

The principle of operation is simple enough, and with most components taken off the shelf, it is easy to design the schematic. The IR element in the emitter is a simple IR LED. This behaves absolutely like any other LED, with the sole exception that it emits light in the infrared spectrum. The emitted light is thus invisible to human eye, but it is meant to excite the infrared receiving element on the other side of the barrier. One important element of this LED is the wavelength of the emitted light, of which we already know that is in the infrared spectrum.

Simple Infrared Barrier – [Link]

S.M.A.R.T. Alarm Clock

by Tony DiCola @ makezine.com:

Wouldn’t it be nice to have an internet-connected alarm clock that automatically sets itself, based on your calendar? You would never miss an early appointment, never forget to set your alarm, and enjoy more restful sleep knowing you’ve solved the nightmare of regulating your alarms. An internet-savvy alarm clock could even watch your inbox and wake you up if friends or family send you an important email.

This S.M.A.R.T. Alarm Clock (Setup for Meetings, Appointments, Reminders, and Tasks) uses the Arduino Yún, which is a special Arduino with two processors. One processor runs an embedded version of Linux and is connected to the internet over wi-fi or Ethernet. The other processor uses the same chip as the Arduino Leonardo microcontroller, allowing the Yún to work with most Arduino shields and accessories. By using the Arduino Yún, this project can talk to complex web services with the Linux processor, and interface with hardware — an LCD touchscreen — on the second processor.

S.M.A.R.T. Alarm Clock – [Link]

Simplify yourself a mechanical design of a device

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With suitable spacers and other fastening technology you´ll use a space optimally while gaining a stable and professional construction at the same time.

Success and reliability of a device depends not only on laboratory tests in “ideal conditions” but also on its mechanical construction. Elimination of mutual influence (EMC), optimal space usage, resistance to vibrations, easy assembly at production are one of factors why it´s worth to design mechanical part of a device into details.

At production of prototypes or small series it may be not that important how demanding is to assemble the device into a final form. However at bigger series, the time- and cost-effectivity of every production step will be visible very soon. Suddenly you´ll find out, that for example 1000 pcs of a given device can be finalised (mechanically) within a week, but by simplifying a mechanical design it might be done substantially sooner.

Also for this reason a huge amount of mechanical and electro-mechanical components can be found on the market. If your company grows and your production batches getting bigger, probably you´ve already found out, that certain mechanical component (spacer, cable gland, insulating washer, …)which seemed to you to be a kind of “useless” would save you a lot of time and made a production more effective. This finding is typical if you start to produce hundreds to thousands of pieces.

Our aim is to always provide you complete solution from development up to final production, that´s why in our portfolio can be found lots of mechanical and electromechanical components, mainly marks EttingerKeystone electronics and Toolcraft.

A few attached images may be more illustrating than thousand words. So if you´re searching for any component for construction of your device, try to look at the “assembling material” segment and if you´ll find what you´re searching for, we´ll deliver it to you immediately from our stock or in a short lead-time at favourable conditions (items on request).


Simplify yourself a mechanical design of a device – [Link]

HCS08 VGA Output

This reference design is a simple VGA signal generation that uses the Freescale’s MC9S08SH16VTJR, which is an 8-bit microcontroller that has Central Processor Unit (CPU) speed of 40MHz with a maximum bus frequency of 20MHz. It has an internal clock source module containing a Frequency-Locked Loop (FLL) controlled by internal or external reference. Its precision trimming of internal reference allows 0.2% resolution and 2% deviation over temperature and voltage with 1.5% deviation using internal temperature compensation. The simplest instructions such as NOP take 1 bus cycle, the other instructions take more cycles, and for example RTS takes 6 bus cycles.

The VGA signal has 5 components that include horizontal synchronization, vertical synchronization and three analog color signals. The analog color signal range is 0-0.7V with 75Ω impedance and sync signals are TTL signals. The device has a refresh rate of 60Hz with 640 x 480 resolutions, and the pixel clock is 25.175MHz. The display refresh rate is therefore slightly lower, somewhere around 57Hz. The implementation for video signal generation is in the form of an infinite loop where one loop cycle is equal to one video frame. During every frame the video signal is generated line by line. A subroutine was created that draws multiple lines, where the number of lines is expected in the A register. Every line is divided into 16 parts. Colors of these parts are stored in RAM. Pointer to this array is expected in the HX register. Each of the 3 color channels is 1 bit only having 8 available basic colors.

The device is very simple that adds character to an ordinary static image displayed in an old CRT display. This can be easily reprogrammed as desired by the user. A scrolling strip may be added that is implemented as a rotating buffer. The circuit can be easily constructed using only an MCU, crystal oscillator, VGA connector and few capacitors.

HCS08 VGA Output – [Link]

Sinewave Generator

Picture

Sine wave Generator project will provide you with a Sinusoidal Waveform output to test various instruments.  You can also use the High quality output from this kit to insert a tone modulation in your audio and RF equipment.  This kit is designed using XR2206 IC to provide High Stability and Accuracy.

  • Supply input 12 VDC Max @ 50 mA
  •  Range: Jumper selectable and preset tunable range of 10 Hz – 100 KHz
  •  Output Level can be controller with onboard preset
  •  Power-On LED indicator
  •  Screw terminal connector for easy connection
  •  PCB dimensions 55 mm x 50 mm

Sinewave Generator – [Link]

ZofzPCB: FREE 3D Gerber Viewer

Rafal @ zofzpcb.com writes:

Many CAD designers, including myself, are equipped with powerful graphic cards. I definitely wanted to use a gamer graphic and I wanted to fly. There is the result, 3D Gerber viewer with newly implemented display of components. Components are guessed, not yet from BOM. Download at http://www.zofzpcb.com Do not forger to check the Autopilot.

ZofzPCB: FREE 3D Gerber Viewer – [Link]

LED Fade using Arduino Uno

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by DIYmasters @ instructables.com:

Hi everyone, this is my first Instructable, and in it, I’ll be showing you how to fade an LED with an Arduino Uno , 2 Jumper wires, 1 Resistor, and a breadboard.

LED Fade using Arduino Uno – [Link]

4 Channel Triac Board

4-CHANNEL-TRAIC-BOARD-PIC01

Opto-Isolated 4-Channel Triac Board (R) is used for fast switching applications. Ideal for switching mains circuits, lights, appliances and small load. Each circuit is effectively isolated with opto-isolators on each channel, TTL inputs control each channel.

  • Trigger input 2-12 VDC
  • Mains supply input 230 VAC or 110 VAC
  • Output 1 A @ 230 VAC (RMS ON STATE CURREN 4 AMPS EACH CHANNEL)
  • Snubber circuit for inductive load
  • Jumper for common cathode ground
  • Box Header connector for connection of control signal
  • Screw terminal connector for Load
  • Four mounting holes of 3.2 mm each
  • PCB dimensions 139 mm x 73 mm

4 Channel Triac Board – [Link]