Category: raspberry / carambola / atmel / embedded linux

why is RUST so popular? well… it is the better C++, so fore those familiar with C++ it will be a breeze, but for anyone else it might be a steep learning curve (the compiler gives very very helpful error […]

long story short: “The Year 2038 problem is where the Unix time can no longer be stored in a signed 32-bit integer and thus after 19 January 2038 will begin wrapping around as a negative number for representing the number […]

Solar Panel 100W (12V?) and Battery Charger (12V) https://www.offgridtec.com/en/complete-systems/solar-system-autarkic/offgridtec-solar-bausatz-basic-starter-100-watt-12v.html Solar Panel Module Voltage: (Vmp) 17,6V Victron BlueSolar PWM-Light 12V 24V 10A -> DataSheed Maximum solar voltage: 28V possible alternative: Steca Solsum 8.8F 12Vor better: Steca-LCD-Display-PR-2020 12V -> 5V Car USB […]

warning: this only works if you have a gui/gnome installed. thanks goes to this superb tutorial with screenshots: http://xmodulo.com/debug-program-nemiver-debugger.html For Debian based distributions, it should be pretty straightforward: apt-get install nemiver; # Debian and Ubuntu pacman -S nemiver; # For […]

specs Compared to the Raspberry Pi 1 it has: A 900MHz quad-core ARM Cortex-A7 CPU 1GB RAM Like the (Pi 1) Model B+, it also has: 4 USB ports 40 GPIO pins Full HDMI port Ethernet port Combined 3.5mm audio […]

on intel / amd cpus/boards: use lm sensors: su – root; # become root apt-get install lm-sensors; # install sensors-detect; # detect available temperature sensors, answer with YES usually # monitor cpu temp every second while true; do sensors|grep Core; […]

update: 2019-10: what it does: one can install a very decent Debian and have okay working speed so yes it can be seen as a very energy efficient (5V based) and still usable (definately faster than pi2) desktop system (99% […]

MicroKernel for mobile devices? LK (Little Kernel) is a tiny operating system suited for small embedded devices, bootloaders, and other environments where OS primitives like threads, mutexes, and timers are needed, but there’s a desire to keep things small and […]

Via Seriellem-D-Sub-9-poligen Anschluss: kann man bei vielen Geräten einen Terminal-Bildschirm-Output bekommen. D.h. man bekommt ASCII-Zeichen ausgegeben und kann mit dem Gerät interagieren, als wäre man via SSH oder TELNET eingewählt. Serielle Kabel, Nullmodem, LapLink usw. Oft müssen auch Daten zwischen […]

This article is about finding out: What low-power PC with decent performance is best suitable for solar-powered (12v would be nice) Off-Grid-computing while respecting your privacy in an FSF-kind? done! see: run a Solar-Battery powered 12V Raspberry Pi Model B […]

B with keyboard = 1.89 W -> daily 45 Wh B+ with keyboard = 1.21 W -> daily 29 Wh B+ with LAN/USB chip off (no i/o except GPIO) = 0.76 W -> daily 18.2 Wh B+ shut down = […]

# delete old vitualbox install package apt-get purge virtualbox # install & download package wget –no-check-certificate https://www.virtualbox.org/download/oracle_vbox.asc apt-key add oracle_vbox.asc echo “deb http://download.virtualbox.org/virtualbox/debian wheezy contrib” >> /etc/apt/sources.list apt-get update apt-get install virtualbox-4.2 dkms # you might also want the guest […]

Carambola1 (discontinued) is based on a network card chip from Ralink the RT3050F, Wi-Fi enabled Linux module, featuring the lowest power consumption in the industry that is pretty fast at network-things and can even run a whole PHP-stack webserver (MySQL […]

in order to get support for FAT32 formatted USB sticks  i want to compile my own carambola firmware. ready compiled and tested firmware for carambola 1 rt305x CPU download here (do sysupgrade with file called openwrt-ramips-rt305x-carambola-squashfs-sysupgrade.bin): openwrt-ramips-rt305x-carambola-squashfs-sysupgrade.bin_03.2013_ramips.zip.pdf (download .zip.pdf renamte to […]

Carambola1 (32MByte) the smallest possible webserver. (lighttpd + php5 working) So here is how you connect to carambola / OpenWRT. TO CLARIFY: THIS CARAMBOLA-WIKI-ENTRY SAYS: “From factory Carambola is shipped with ttyS0 disabled. Or to be more precise it is in […]