Zimbra. Unknown command sent to server. ZxChatRequest

Unknown command sent to server. ZxChatRequest
v.8.8.15

Zimbra user password

Resetting the password:

sudo passwd zimbra

Using RPi3 as a WiFi AP

https://frillip.com/using-your-raspberry-pi-3-as-a-wifi-access-point-with-hostapd/

For RPi2 new hostapd:
http://quadfinity.blogspot.ru/2014/09/compile-latest-hostapd-v2.3-on-Raspberry-Pi-or-ODROID.html

Install OpenCV and Python to Raspberry Pi

Adding a RTC to Raspberry Pi

Enable connection to Raspberry Pi over USB

Use Android Tablet as a screen/keyboard

Wireless Mouse speed

To resolve problem of a sluggish mouse pointer with the wireless mouse: