Raspbian enable SSH when creating SD card

$ sudo mount /dev/mmcblk0p1 /mnt/
$ cd /mnt
$ sudo touch SSH
$ sudo umount /mnt

Open Hack Farm Blog

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Reduce Raspberry Pi Zero power consumption

# vi /etc/rc.local

# Disable HDMI
/usr/bin/tvservice -o

# Disable LEDs
echo none > /sys/class/leds/led0/trigger
echo 1 > /sys/class/leds/led0/brightness

References :
Raspberry Pi Zero - Conserve power and reduce draw to 80mA
Controlling PWR and ACT LEDs on the Raspberry Pi

jieba don't reload dicttionary

import jieba
jieba.initialize()

References :
jieba.load_userdict()的问题 · Issue #399 · fxsjy/jieba

org.bluez.Error.Failed

# rfkill unblock bluetooth
# hciconfig hci0 up

References :
蓝牙设备上电提示Failed to set power on: org.bluez.Error.Blocked - pengrui18的专栏 - CSDN博客

fatal error: glib.h: No such file or directory

# apt-get install libglib2.0-dev

ImportError: No module named 'btlewrap'

# pip3 install btlewrap