RPI setup

config.txt

Below is a starting point for a /boot/config.txt matching a Raspberry Pi 3 B+. Most importantly is enabling turbo mode to prevent the cpu from changing its frequency dynamically. This will have a negative effect on Twitse time measurements.

Next the RPI’s are overclocked. They are not exactly speed kings and they can use a little boost. Common sense would dictate that overclocking must have a positive effect on the Twitse time measurements but this haven’t really been verified.

/boot/config.txt:

# See /boot/overlays/README for all available options

gpu_mem=16

dtparam=i2c1=on            # client only
dtparam=i2c_arm=on         # client only
dtparam=spi=on             # client only
dtoverlay=hifiberry-dac    # client only

force_turbo=1
arm_freq=1200
core_freq=500
sdram_freq=500
over_voltage=2
over_voltage_sdram=2

initramfs initramfs-linux.img followkernel

(This is from an Arch installation) ​ ​