RF Wireless and Device Networking

Designs and manufactures hardware for the implementation of wireless sensor networks, mesh networks and communication protocols for all sorts of distributed wireless networks.

Libelium Comunicaciones - Wireless Solutions

Meshlium is the world's only multiprotocol mesh router to combine Wifi, ZigBee, GPRS, Bluetooth and GPS technologies



Meshlium receives sensor data from Waspmote Plug & Sense! and forwards it directly to the Internet via Ethernet, Wi-Fi or 3G/GPRS protocols depending on the connectivity options available in the area.

Meshlium modular and configurable Router - Libelium

Meshlium is a Linux router which works as the Gateway of the Waspmote Sensor Networks. It can contain 6 different radio interfaces: WiFi 2.4GHz, WiFi 5GHz, 3G/GPRS, Bluetooth, XBee and LoRa. As well as this Meshlium can also integrate a GPS module for mobile and vehicular applications and be solar and battery powered. These features along with an aluminium IP65 enclosure allows Meshlium to be placed anywhere outdoor.

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There are places like your Backyard, outdoors, a village... where your Gadgets will stop working !!!

You will feel suffocated when your Smartphone or Tablet fails to respond to your caring strokes. Your Dupey is perishing due to Undernourishment. All you need is "Electronic Solar Umbrella" which was invented by me delabs on June 1st 2014.



The Red Light is for Data Networking SmartUmbrellas using Advanced Multi-Threaded Infra Red Technology.

SUN - Smart Umbrella Networking

Resources - Electronic Firms and Electronic Projects.

I just invented the SmartUmbrella - My Drone is Rushing to the Patent Office. Keep this confidential till my drone returns safely, the beagle boys are using Blimps with Large Magnets to capture Drones.


Another model with an ability to charge Notebooks, Netbooks would be good. If i am allowed to stretch my imagination …..A Networked Model with an embedded Wi-Fi Repeater, which will just connect with other Home Products which have embedded Wi-Fi Repeaters. These form an endless wireless Daisy Chain of Gadgets in the Neighborhood. When a couple of these gadgets are connected to Internet and Mains Power, the whole chain goes online. The Lamps can also double up as flash media servers.

Just like 3G, 4G, 5G in the end will become WiG. A Hybrid WiFi authenticated by 5G technology. WiFi using a Chain of HotSpots on the ground is better than AnyG or nG Towers. If everyone watches HD Youtube Videos at the same time, the towers will come crashing. Wireless Optics are even better, better than anything, for large data transfers in homes, offices.

Hence with Wi-Fi chain and Tablets you got Web at low power. Web means PDF and HTML = Knowledge Data and Power. This power must be a low energy burden.

A Mini Solar Station and 24V Green 100W Bus in the Home can Power the Wi-Fi and Lamps. Recharge the tablets and keep working and learning. This is the worst case scene when we have energy shortage.

The Long term solution for Energy is Solar, Wind and Most important Ethyl Alcohol employed in the proper way to power Mini Generators and Automobiles.

Electro-optics, design and development of a precision pulse generator line, and provider of custom laser systems for test and measurement applications.

Quantum Composers - Laser and Optics

A Benchtop Design with Easy Programming Interface. Cost-effective yet highly flexible and functional approach for your synchronization and timing needs. Modes: burst, duty cycle, continuous, single shot, channel multiplexing.



9500+ Series Digital Delay Pulse Generator

Some Highlights

• 1 ns Timing Resolution
• < 400 ps Jitter
• 2, 4 or 8 Independent Channel Outputs
• USB, RS232, GPIB Standard. Ethernet optional.

Quantum Composers Main Branch
212 Discovery Dr., - Bozeman Montana 59718, USA.

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"Imagine you have a radio receiver and you wish to display the receiving frequency. As you know the oscillator in a radio receiver works 455 kHz or 10.7 MHz above the receiving frequency. The 455 kHz and 10.7 MHz difference is called IF (Intermediate Frequency)."



A Google talk around 2006 with another electronic enthusiast

davidhvm (3:36:51 PM): Hello, i assembled de prototype and work fine
davidhvm (3:37:24 PM): anyway i add a push button to Set/Reset to 00 the counter
davidhvm (3:37:39 PM): thanks a lot again
davidhvm (3:38:13 PM): check this 2.5 GHz Frequency counter
davidhvm (3:39:07 PM): i'm looking for some apps for counters and i
found a lot o pages with very usefull
davidhvm (3:39:44 PM): circuits of course with PICs (Microchip or Atmel)
davidhvm (3:39:47 PM): Bye
delabs (3:44:58 PM): hello david
davidhvm (3:45:37 PM): hi all work fine
delabs (3:45:48 PM): great
davidhvm (3:46:40 PM): are amazing these projects
davidhvm (3:47:15 PM): ok thanks may be for long time
delabs (3:47:30 PM): fine
davidhvm (3:47:41 PM): i'm at middle of my carrer


"This project describes a very powerful frequency counter. Very simple construction which everyone can build. 6 LED display will present the frequency with 1kHz resolution and RS232 communication to computer is available as option. The software has also been implemented with some smart functions,"

Here is a active page of the counter 2.5 GHz Frequency counter

"You have a radio and you want to listen at 100.0 MHz (the IF is 10.7 MHz) The oscillator will be oscillating 10.7 MHz above the 100 MHz, so the oscillator is at 110.7 MHz. If you would measure the frequency with an ordinary counter you would get 110.7 MHz on the LED display but, by activating the offsetting function this counter will subtract and display 100.0 MHz.



The offset calculation is easy activated with 2 switches, one for 455 kHz and one for 10.7 MHz.
Boy, I wish I had this counter when I was building my first receiver for aircraft-band, which was manually tuned and not very stable."

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