pcDuino goes quad-core, swaps Arduino for RPi compatibility
LinkSprite’s $25, 64 x 50mm “pcDuino4 Nano” SBC is a re-spin of FriendlyARM’s NanoPi M1, offering a quad-core H3, Raspberry Pi expansion, and 3x USB ports.
Can you be a pcDuino without the Duino? For its latest open source pcDuino board, LinkSprite has switched from Arduino compatibility to a 40-pin Raspberry Pi expansion interface, breaking the mold of the three pcDuino SBCs, and five models total, that made it into our June HackerBoard SBC survey. The new pcDuino4 Nano, which is on pre-sale for $25, follows the $40 pcDuino3 Nano, which fell directly in the middle of the pack of our reader rankings of community-backed SBCs, but was the most popular of the pcDuino models overall.
Linux 3.9 To Linux 4.9 Kernel Benchmarks: Testing The 21 Last Kernels
With the in-development Linux 4.9 kernel showing signs of some performance improvements, I've gone ahead and tested the last 21 major kernel releases on the same system. From Linux 3.9 to Linux 4.9, each of the major kernel releases was tested from the same Intel Core i7 desktop with a variety of benchmarks.
Keeping up the fight for free software
Here's John Sullivan's vision for a more just world: You pop into your favorite electronics retailer and encounter a panoply of new gadgets, each one more alluring and astounding than the last—and each one guaranteed to respect your freedom. Your freedom to inspect its software. Your freedom to modify that software. Your freedom to have that software collect only the data you wish.