#72 Making the invisible visible: Tools for debugging and re-engineering electronic designs

In this video I show tools to find out, how a unknown electronic device works. I start with a Multimeter, continue with a Digital Storage Oscilloscope (DSO), and end up with a modern Logic Analyzer.
The goal is to build an enhanced electronic load with a nice touch display and data logging. Could have used an Arduino, but decided to use an ESP8266 because I wanted to have a wireless connection on the bench. And maybe, we will be able to replace the display with a web interface?

Links:
Review of used electronic load: https://youtu.be/snROh2acybs
Original Logic Analyzer: http://www.saleae.com/
Clone Logic Analizer: http://www.aliexpress.com/item/New-Arrival-USB-Logic-Analyzer-24M-8CH-MCU-ARM-FPGA-DSP-debug-tool/32321002686.html
Open Source software for Logic Analyzer: http://sigrok.org/
Electronic Load: http://www.aliexpress.com/item/Del-Multifunction-60W-Constant-Current-Electronic-Load-Battery-Capacity-Tester-Module-May09/32662409030.html
Document: https://github.com/SensorsIot/Electronic-Dummy-Load