THE REED SWITCH You will always need these reed switches for the Tricorder because there are no visible switches to activate it. The reed switch comes in two types but in many forms of packaging. I got these black ones because it looked more robust than the fragile glass types which keeps failing on me. […]
Category Archives: TR-595E
20220722 Soldering the Top Panel PCB
The Top Panel PCB has arrived and immediately, I began to work on it. This simple circuit took me three hours to figure out why it is not working. I have done the troubleshooting and although it checks out, the error was quite puzzling. POST SOLDERING DISCUSSION The soldering took far longer than it should […]
20220717 TR-595E: The LCD Screen
I forgot to take a look at the LCD screen which arrived two weeks ago. The 2.2inch 18-bit LCD screen used in the TR-595E is a 320×240 TFT with a microSD card. Unfortunately, it is also out of stock at Adafruit. When it comes to electronics, I have challenges in sound, LCD screen, motors, and […]
20220717 The Front Array Blah-blah-blah
So, I have completed three versions of the Front Array PCB. I love doing these types of SMD soldering and now, I think I am not that rusty anymore. But, I must admit, soldering these boards are a challenge. Lesson for the day (for me) is that I must not miss my own steps and […]
20220715 The Butle… er, 4017 did it
BE LUCKY ON A FRIDAY EVENING (or TGIF) So, right after I made the video for the previous post, I notice that two of the green LEDs in the scanning array is not lighting up. They are the same LEDs which had the same problem when I first soldered them a few days ago. It’s […]
