Links 2015 KW 12

Raspberry Pi 1B vs Pi 2 B

Raspberry Pi 2 B is just a Pi v1 with more power.

Comparison of some other cool (and older) boards: http://techwatch.keeward.com/geeks-and-nerds/arduino-vs-raspberry-pi-vs-cubieboard-vs-gooseberry-vs-apc-rock-vs-olinuxino-vs-hackberry-a10/

Copy your FreeBSD img to sd card @MacOS

  1. Plugin your sd card
  2. Open a terminal as sudo/root/admin
  3. $ diskutil list // Identify the /dev/diskNUMBER of the sd card
    $ diskutil unmountDisk /dev/diskNUMBER
    $ sudo dd bs=1m if=FreeBSD-11.0-CURRENT-arm-armv6-RPI-B-20150217-r278908.img of=/dev/diskNUMBER

How to build your own freebsd raspberry pi (arm6) image:

raspberry pi b+ overclocking options

SoC (Broadcom BCM2835 ARMv6) thermal range is up to +85 °C.

Orginal /boot/config.txt

disable_commandline_tags=1
gpu_mem=32
device_tree=rpi.dtb
device_tree_address=0x100
kernel=uboot.img

My additional options (stable system):

arm_freq=900
arm_freq_min=700
gpu_freq=250
gpu_freq_min=250
core_freq=450
core_freq_min=250
sdram_freq=500
sdram_freq_min=400
over_voltage=0
over_voltage_min=0
initial_turbo=15
temp_limit=75

source