Shahriar from the SignalPath purchased a defective Agilent E4433B ESG-D Signal Generator as a teardown and repair project. Sounds expensive but this piece of equipment is an expensive piece of gear. Shahriar goes through the troubleshooting of the system in great detail and repairs the fault! “The Output RF board is equipped with various amplifiers, electronic attenuators, I/Q mixers, heterodyne paths and final PA. By using soldered SMA cables
If you have something that needs to be turned on and off why not do it in a unique way. This Sound-Activated Outlet project lets us use an Arduino to monitor for sound patterns and then control an outlet accordingly. “The circuit for this project can be divided into two main parts: A microphone assembly and a relay driver. The microphone assembly is composed of an electret microphone element, two
Darbin Orvar built a cool tech electronic Christmas Tree. Best of all the above video will show you how to make your own. For more inspiration you can have a look at her blog. “My version of a DIY Christmas Tree made with redwood and plywood. Perfect for an apartment and easy to move around. As a bonus this tree is powered by an Arduino and LED strip lights playing
This Reverse Geocache called the Captain Herrmano’s Mystery Box packs a ton of sensors into the box and some slick programming brings it to like with a full on treasure hunt. “The housing – that is, the box itself – came from a Nanu Nana store (which is a German chain of stores). Inside of the housing, an Arduino Mega controls and receives information from different sensors and boards
If you have a bunch of boards to program and test you have probably thought to automate some of the steps. Wiring all the connectors, hooking it up to a computer, programming in test firmware, running the system through a battery of tests and finally programming in the release firmware can be a tedious task. snifikino shows us how he made a test jig that is connected to a
JEELABS did a nice WS2812B LED Driver Project that uses an ARM LPC810 running at 30 MHz to get things done. “Sending 12 bits @ 2.4 MHz takes 5 microseconds. If we were to set the LPC810 to run at its maximum 30 MHz clock, we could probably drive the SPI hardware entirely via interrupts, but for a simple timed example this is not really necessary. Instead, we can
 DickB1 built a very interesting clock called Numechron Digital Clock which is based around a very old clock. It uses an AC motor to keep time which keeps time based on the 60 Hz in the AC line. “I really liked the Art Deco style of the Model 1364 case and chose to emulate it, although my clock is considerably larger than the prototype. While mimicking the original
