Today’s Diminutive Device is a small castellated System-On-Module (Twitter link, nitter proxy) from [MangoPi] called M-Core, with a quad-core A53 CPU and 1 GB of RAM. As such, it’s very… ...

So he decided to add an 8×8 LED module which would display the load for each individual core of his CPU. It looks great next to the illuminated tachometer.

Linux kernel module to blink LEDs on block device activity. Update: Starting with version 4.8, Linux now has built-in support for blinking LEDs (through the disk-activity trigger). However Linux's ...