Inside the boxy blue base is an Arduino Nano, a DS3231 real-time clock module, and a perfboard full of transistors for switching the LED strips inside the segments.

Be careful with the DS3231 chips and modules, especially the modules from China. The DS3231 modules from China use chips labeled DS3231M which are less stable than the DS3231S parts (MEMS vs ...

Do you desire a teeny, tiny, little Arduino board with OLED display? You bet you do! Microview is a new "chip-sized" Arduino on Kickstarter that costs $45. What can it do? All kinds of stuff!