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arduinoisp

james-workshop

Config files for my GitHub profile.

joule-thief

uses 3 pcs of PCB to make the Joule Thief look like a battery

magnetic_polarity_tester

mini-wled-controller

ne555_door_lock_timer

NE555 timer was launched in 1971 and has a history of 50 years. It is easy to use, stable and cheap, so it is still widely used, and its output in 2003 was 1 billion. Now I use NE555 to make timers. Most of the control parts of electronic door locks use this circuit. The timing method is very simple, 1.1 x RC, which is not very accurate compared with MCU, but it is very simple

pcb-christmas-tree

When Christmas is coming, what can an electronics lover do ? A PCB Christmas tree of course ! The idea here was to make a simple Blinky Board that drives 13 LEDs in a blinky sequence. LEDs are driven by astable multivibrator circuit.

pcb_ruler

Many DIYre have made PCB rulers. In order to have a lot of information, usually PCB rulers are very large. I want it to be easy to carry, so I plan to limit the PCB ruler to less than 10cm, so I can use it as a key chain

pcbart

PCB stands for "Printed Circuit Board." This is the standard circuit board you will find inside of most electronic consumer products. In addition to being used as electronic consumer products, I think PCB can also be made into tools or artistic creations. First

rgb-led-matrix-youtube-sub-display

Displaying live YouTube subscriber count using an LED Matrix and and ESP8266 (Arduino)

rgb-matrix-led-mario-bros.-clock

Super Mario is my childhood memory, when I saw JnthasMario Bros. Clock project, I immediately decided to make one

solder-reflow-plate

PCB based SMD reflow plates

wash-hands-timer

The sketch uses ESP8266(D1 Mini) as a 30 second countdown counter to remind that hand washing must last at least 20-30 seconds to prevent diseases and minimize the spread of diseases.

wi-fi-led-christmas-tree