Fast and reliable identification of liquids is of great importance in security, biology and beverage industry. An unambiguous identification of liquids could be made by electromagnetic measurements of their dielectric functions in the frequency range of their main dispersions, but this frequency range, from a few GHz to a few THz, were not covered by any conventional spectroscopy.
Via Electronics-Lab.com | Posted on 2009.11.06 at 08:34
The purpose of this project was to design and implement a reliable and cost effective wireless temperature sensing system for the recreational spa industry.
Via Electronics-Lab.com | Posted on 2009.11.06 at 08:28
This project is a 2 channels amp meter. Those channels are completely isolated up to 2000 volts. It provides auto detection for AC or DC current. The main part of this project is the current sensor ZMC10 a cool DIP 14, which supports up to 10 A.
Via Electronics-Lab.com | Posted on 2009.11.06 at 08:13
Fred points out this schematic for a rather interesting radiotelephone transmitter instantaneously powered by the operator’s voice. [via]
One of the neatest minimalist amateur radio transmitter circuits around – this one is voice powered – it provides DSB, (double side band)modulation and power from an ordinary 8-ohm speaker – if are in doubt that the circuit works, the maker has the contacts and the voice recordings to prove it!
Voice-powered RF transmitter - [Link].
Via Electronics-Lab.com | Posted on 2009.11.06 at 08:11
Care to hand control of your playlist over you to an Arduino? [via]
Awhile back I was working on a project that that I wanted to be able to start music the on my mac through the IR receiver.
Via Electronics-Lab.com | Posted on 2009.11.06 at 08:08
Atmel’s ATA874x single-chip UHF ASK/FSK RF transmitter family targets a broad range of proprietary wireless industrial and consumer applications such as metering, alarm systems and home control applications.
Via Electronics-Lab.com | Posted on 2009.11.06 at 07:54
Control the colour of a powerful LED light beam with a remote control, store the colours and recall them at will. [via]
With this thing I can control the colour of a bright light into many different colours using the three fundamentals colours : red green and blue.
Via Electronics-Lab.com | Posted on 2009.11.06 at 07:46
Trax writes:
Here is my home-built, cloth iron soldered, range extender for CC1101 (included onboard) RF transceiver chip from Texas Instruments. You could say that it is a CC1101+CC2591, but for 868/920MHz band.
Via Electronics-Lab.com | Posted on 2009.11.06 at 07:03
This SMPS boosts low voltage (5-20 volts) to the high voltage needed to drive nixie tubes (170-200 volts). Be warned: even though this small circuit can be operated on batteries/low voltage wall-worts, the output is more than enough to kill you! Project includes: Helper Spreadsheet EagleCAD CCT & PCB files MikroBasic Firmware Source
High Voltage Switch Mode Power Supply for Nixie Tubes – [Link].
Via Electronics-Lab.com | Posted on 2009.11.03 at 21:50
Sebastian built an experimental record/looper circuit, resulting in some interesting sample contortionism. [via]
This circuit currently has a few ways to manipulate audio.
Via Electronics-Lab.com | Posted on 2009.11.02 at 04:30