I’ve gotten a lot of questions on the blog about the new version of the MHS5200A function generators available on eBay. Viewer Tolga was kind enough to send one in to me to review and tear down. Although some improvements have been made over the older models, there are some concerning issues with these new models too!
Teardown and review of the new MHS5200A – [Link]
I was inspired by the Play Button awards YouTube sends out for subscriber milestones and whipped up a simple circuit using an ESP8266 wifi board and seven segment display to show off my realtime subscriber count. This is a great IoT beginner project, with just a little soldering and a code personalization required to make it work for your own account.
YouTube Subscriber Counter With ESP8266 – [Link]
Arduino’s newest board, the Arduino 101 is finally here… It has an Intel Curie processor, and an on-board gyroscope, accelerometer, and Bluetooth. Let’s see how it stacks up to the Uno, and find out what each of the components on the board do. At the end of the video, I go through setting it up in the Arduino IDE and run a simple sketch.
The New Arduino 101 (Genuino 101) – Unboxing, Set Up, and Comparing it to the Arduino Uno – [Link]
Teardown and analysis of microwave (26.5GHz) electro-mechanical step attenuators from The Signal Path:
In this short episode Shahriar takes a close look at a pair of Hewlett Packard microwave electro-mechanical step attenuators operating up to 26.5GHz. Mechanical attenuators offer excellent repeatability, low insertion loss and nearly limitless linearity. The teardown reveals that the construction of both modules is very similar on the microwave path. In fact, the lower-frequency model still uses the same attenuator components. The newer model employs electronic control circuity while the older generation attenuator uses purely mechanically controlled DC path. Both models use a solenoid style actuators for step attenuation control.
Teardown and analysis of microwave (26.5GHz) electro-mechanical step attenuators – [Link]
In this Arduino project video educ8s.tv is going to build an Arduino Game, a Tic Tac Toe game with a touchscreen.
In this video we are going to build an Arduino Tic Tac Toe game. As you can see, we are using a touch screen and we are playing against the computer. A simple game like Tic Tac Toe is is a great introduction to game programming and Artificial Intelligence. Even though we won’t be using any Artificial Intelligence Algorithms in this game, we will understand why Artificial Intelligence Algorithms are required in more complex games.
Tic Tac Toe Game with a touch screen and an Arduino Uno – [Link]
In this video educ8s.tv is going to compare the computational speed of the WeMOS D1 ESP8266 based Arduino compatible board with the computational speed of the most popular Arduino boards and the Teensy 3.2.
A few weeks ago, in a similar video we compared the performance of the Teensy with the most popular Arduino boards. Today, we are going to add another board to the comparison, the WeMOS D1 ESP8266 Arduino compatible board. I have prepared a detailed tutorial on that board so you can check it out before we start.
WeMOS D1 ESP8266 vs Arduino Uno, Arduino Due and Teensy 3.2. Which one is the fastest board? – [Link]
In this episode Shahriar attempts a difficult repair of a Tektronix RSA real-time spectrum analyzer. This well-equipped instrument reports several error messages during startup POST including LO Unlock as well as Signal Path failures. The service manual of the instrument does not provide any detailed block diagram and no schematics. Most failures require the instrument to be serviced by the Tektronix factory. The equipment has various advanced options including 110MHz analysis bandwidth, digital modulation analysis, wide-band IF output and deep memory.
Teardown, Repair and Experiments with a Tektronix RSA 6114A Real-Time Spectrum Analyzer – [Link]