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7 Mar 2015


Embrio, create Arduino programs without writing code:

Easy To Use -Make programs by adding and connecting nodes. No coding necessary!

Real Time Connection -Work with a live connection to your Arduino, see how your program works as you build it!

Powerful -While easy to use, Embrio is a powerful development tool that you won’t outgrow as your skills develop.

Embrio: A visual programming environment for Arduino - [Link]

6 Mar 2015


That´s why this modern multimeter is also suitable development of sensitive and “ultra low power“ devices.

Wide offer of modern measuring equipment enables us to choose a suitable device for every purpose and in various price levels. A decision which device to buy and/or a decision whether it´s worth to go for a higher-level device surely isn´t easy.

UT61D, which we want to introduce to you this time offers all usual features – at the first sight. But when we go deeper, we find out that besides a pleasant resolution (5999) and a decent precision (0,5-0,8%) it also offers 60mV ranges – for DC and also AC. Especially in the AC field it´s not that common (at equipment of thice price-level) and moreover – all that we measure in the AC signals can be labeled as TRMS (true RMS). And to all this, also measuring of current starts with a 600uA range (DC aj AC), what means measuring with a 0,1uA resolution.

Probably the last main bonus of UT61D is a possibility of communication with PC via serial port (RS232) and displaying of measured parameters in a simple graphic software.

Detailed information will provide you the UT61D user guide as well as UT61 family flyer.

UT61D handles high and also extra low voltages - [Link]

6 Mar 2015


by elektor.com:

TEXAS Instruments has announced the new SimpleLink ultra-low power wireless MCU platform. The platform has been designed to use so little energy it can be powered from harvested energy or will run for years on a coin cell. For versatility the platform supports multiple wireless connectivity standards using a single-chip and identical RF design. The SimpleLink ultra-low power platform supports Bluetooth low energy, ZigBee, 6LoWPAN, Sub-1 GHz, ZigBee RF4CE and proprietary modes up to 5 Mbps.

The first members of the SimpleLink devices to be introduced are the CC2640 which supports Bluetooth Smart and the CC2630 for 6LoWPAN and ZigBee. The CC2650 wireless MCU supports multiple 2.4 GHz technologies including Bluetooth Smart, 6LoWPAN, ZigBee and RF4CE. The support for such a wide range of radio standards helps future-proof designs and gives the ability to configure a chosen technology at the time of installation in the field. Planned for introduction later in 2015 are the CC1310 for Sub-1 GHz operation and the CC2620 for ZigBee RF4CE.

Ultra Low Power Wireless IoT Platform - [Link]

6 Mar 2015


by Einar Abell @ edn.com:

This Design Idea gives two versions of an indicator light that changes from green to red as a battery discharges. There are many circuits that do this sort of thing, but all the ones I have seen are too complex and costly for my taste. This DI shows a method that uses an absolute minimum of low cost parts: a dual-color LED and four other parts.

Voltage indicator transitions between colours - [Link]

6 Mar 2015


by retrotext.blogspot.co.uk:

I have just recently had solar pv installed, mainly to future proof my energy costs, I do not expect it to be like drilling for oil in my back garden, however the return looks to be encouraging.

The install gives you another single unit meter, from this you will see the total amount the panels produce, but that is about it.

I wanted to know how much the production was as it was happening, I discovered the light blinks on the front of the meter will flash 1000 times for each kWh of electricity which passes through. The rate of the flashing of the LED tells you how much power is currently passing through the meter.

A basic Arduino Solar PV Monitor - [Link]

5 Mar 2015


This is a small 2 Channel amplifier constructed around Sanyo’s LA4445 IC delivers 5.5Watts +5.5 Watts at 4 ohm load, supply in 12V DC 2Amp, Input impedance 30K.


Dual Channels output : 5.5W
Minimum External Parts
Very small pop noise at the time of power supply ON/OFF
Good ripple rejections
Small residual noise
Built-in protectors 1. Thermal Protector 2. Overvoltage Surge Protector
Standard Audio signal
Supply 12V DC
Load : 4 Ohms Speaker on Each Channel
Voltage Gain : 50DB
Output 5.5W on each Channel (THD 10%)
Total harmonic distortion 1% Max @ Po=1W
Input impedance 30 K-ohms

5.5W – 2 Channel Audio Amplifier - [Link]

5 Mar 2015


A thermometer is utilized to quantify the temperature of solids, liquids, or gases. A thermometer contains a fluid (normally mercury or a liquor arrangement) in a supply whose volume is directly reliant on the temperature (as the temperature expands, the volume increments). At the point when the fluid is warmed it ventures into a thin tube that has been aligned to demonstrate the temperature. Temperature can be recorded in Celsius, Fahrenheit, or Kelvin, accordingly it is imperative to note which scale the thermometer is balanced for.

This Do It Your Own (DIY) digital thermometer circuit can measure temperatures up to 150°C with an accuracy of ±1°C. The temperature is read on a 1V full scale-deflection (FSD) moving-coil voltmeter or digital voltmeter.

Operational amplifier IC 741 provides a constant flow of current through the base-emitter junction of NPN transistor BC108. The voltage across the base-emitter junction of the transistor is proportional to its temperature. The transistor used this way makes a low-cost sensor. You can use silicon diode instead of transistor. The second operational amplifier is amplified by the small variation in voltage across the base-emitter junction, before the temperature is displayed on the meter. Preset VR1 is used to set the zero reading on the meter and preset RV2 is used to set the range of temperature measurement. Operational amplifiers operate off regulated ±5V power supply, which is derived from 3-terminal positive voltage regulator IC 7805 (IC1) and negative low-dropout regulator IC 7660 (IC2). The entire circuit works off a 9V battery. Assemble the circuit on a general-purpose PCB and enclose in a small plastic box. Calibrate the thermometer using presets RV1 and RV2. After calibration, keep the box in the vicinity of the object whose temperature is to be measured.

Digital Thermometer Circuit - [Link]

5 Mar 2015



VFD Modular Clock IV-18 SMT edition is a special solder-free kit version of the original VFD Modular Clock . The firmware is mbed based and is freely available at http://developer.mbed.org/teams/Akafugu/code/vfd_modular_clock_mbed/


  • IV-18 8-digit Russian VFD Display Tube
  • Open source mbed based firmware
  • LPC1347 ARM Cortex-M3 64kb microcontroller
  • GPS (option)
  • Four Letter Word
  • Easy to update firmware with no special drivers required (LPC1347 usb bootloader)

VFD Modular Clock IV-18 SMT - [Link]

5 Mar 2015


The miniSpartan3 is our new, low cost, tiny, FPGA kit. It starts at just $25, and there is a more powerful FPGA chip available for $35.

  • The Spartan 3A XC3A50 FPGA ($25), or the Spartan 3A XC3A200 FPGA ($35) from Xilinx.
  • An on-board USB JTAG Programmer to power and program your FPGA.
  • An on board USB to Serial Interface.
  • One HDMI port.
  • 41 digital I/O pins.
  • A 4-channel analog to digital converter running at 200 KSPS with 8 bit resolution.
  • 4 Mbit SPI Flash.
  • 32Mhz oscillator.
  • 3 LEDs for debugging.
  • 2 DIP switches.

miniSpartan3 - [Link]

5 Mar 2015


The Emic 2 Text-to-Speech Module is a multi-language voice synthesizer that converts a stream of digital text into natural sounding speech. Using the universally recognized DECtalk text-to-speech synthesizer engine, Emic 2 provides speech synthesis capabilities for any embedded system via a simple command-based interface.

EMIC 2 Text-to-Speech Module - [Link]





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