Power & Source of Big Ideas

I've been testing the "Heat Sink+Fan(V2.0)" R2S with the yellow plastic case. There was no mention of an included fan on the product page. The first OS image I tried was FriendlyWRT and I didn't notice the fan noise. Then I tried Armbian Focal and was very surprised to hear a fan whirring ...
USB slave is not enabled in current FriendlyWRT. It does seem to be enabled in armbian focal. I tested this by plugging the r2s into my linux workstation and monitoring the USB port with tshark and the usbmon kernel module. Booting from FriendlyWRT shows no packets on the micro USB port. Booting fro...
Have you executed `ls` over ssh in a large folder during the stress tests? Without DMA, the USB ethernet chipset's buffer would become full under stress and refuse more packets. What happens to `ls` on an SSH session when both CPU and USB ethernet are busy? The iperf3 and bonnie test was with the u...
I installed the latest FriendlyWRT on my NanoPI R2S (20200707). I was very happy that it was such an easy process to write the image to a micro SD card and get it booted. A few things along the way made me think this project could be reminded about the Principle of Least Privilege (https://en.wikipe...
I tested it and was surprised to see that there was barely any impact when running an iperf3 test on the LAN ethernet adapter and running a bonnie++ test on a usb stick in the usb 2.0 type A socket, at the same time. macbook pro -> r2s LAN + USB2.0 mem stick iperf3 test [ 5] 592.00-593.01 sec 111 MB...