An overview & setup of the Arduino alternative "bluepill" STM32 ARM Microcontroller board
The "bluepill" is an ARM based Microcontroller, with awesome specs and strength, in this post I will talk about it's board the bluepill, soldering, get it to work
How to make a 0$ Microscope with only your phone !
With using a normal smartphone camera lens and a spherical-shaped droplet of water you can magnify & change your phone into a portable working microscope.