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https://openhackfarm.wordpress.com/2019/03/23/open-hack-farm-x-%e5%8d%97%e6%96%b9%e5%89%b5%e5%ae%a2%e5%9f%ba%e5%9c%b0-%e5%ae%b6%e5%ba%ad%e5%a0%86%e8%82%a5%e8%a3%bd%e4%bd%9c/

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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

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

# apt-get install libffi-dev