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Orange Pi Zero

This diminutive single board computer powered by a quad core H2 processor can be purchased for very little. At the time of writing $6.99 from Alibaba + shipping.

You will need to purchase a Micro SD card separately at least 8Gb preferably Class 10 or faster. I opted for a 16Gb UHS-I SD card from ebay

For serial access I used a FTDI USB board. This can supply 3.3v via a jumper and from what I read the Orange PI Zero does not like 5v. genu-bi00171.jpg

A good article on getting setup http://codelectron.com/how-to-setup-orange-pi-zero/

I tried a couple of operating systems. I found that RaspbianOS made the SoC run really hot circa 70C you can't keep your finger on its surface for too long.

[   18.170325] CPU Budget: Temperature: 69 Limit state:0 item[1200000,4,-1,0 0]
[   18.670126] CPU Budget: Temperature: 70 Limit state:1 item[1200000,3,-1,0 0]

I switched to https://www.armbian.com/orange-pi-zero/ and now the CPU runs much cooler too 53C

login as: root
root@192.168.1.197's password:
  ___                               ____  _   _____
/ _ \ _ __ __ _ _ __   __ _  ___  |  _ \(_) |__  /___ _ __ ___
| | | | '__/ _` | '_ \ / _` |/ _ \ | |_) | |   / // _ \ '__/ _ \
| |_| | | | (_| | | | | (_| |  __/ |  __/| |  / /|  __/ | | (_) |
\___/|_|  \__,_|_| |_|\__, |\___| |_|   |_| /____\___|_|  \___/
                       |___/
 
Welcome to ARMBIAN 5.30 stable Ubuntu 16.04.2 LTS 3.4.113-sun8i
System load:   0.08 0.13 0.09   Up time:       6 min
Memory usage:  12 % of 241MB    IP:            192.168.1.197
CPU temp:      53°C
Usage of /:    82% of 1.4G