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• http://opensourceecology.org/wiki/File:LiftT
racWithTracks.jpg
http://blog.ted.com/2012/07/27/civilization-reboot-fellows-friday-with-marcin-jakubowski/
ARDUINO NETDUINO
16 MHz 8-bit AT mega
32K
2K
~ 25 EUR,-
Native (Cpp)
48 MHz 32-bit Atmel ARM
128K
60K
~ 50 EUR,-
Micro SD
Ethernet
.NET TinyCLR
CPU
Max program size
RAM
THE CALCULATIONS
4186 joules for 1 Liter water to heat 1° Kelvin
1 Watt = 1 joule / second
Heater = +/- 1000W
Heat 20L water 25° = 4186 * 20 * 25 = 2093000 joules
2093000 / 1000 / 60 = 34 min.
AUTOMATIC HEATING
The materials
• Electric heating plate
• Npn temperature sensor
• Arduino
• Relay
• LCD touchscreen
NO PID
Heat only; Only On-Off switch;
Measure Delta
• Far – long bursts
• Medium – medium bursts
• Close – short bursts
BUILDING STUFF IS EASY!
OPEN SOURCE HARDWARE IS ALL
AROUND
CHEAP AND ACCESSIBLE
CONNECTIVITY IS EASY
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