FutureKit Temperature Controller: Difference between revisions
Brian Wilson (talk | contribs) Created page with "PDF data sheet: http://futurekit.com/2009/manual/future/eng/PDF_FK9/fk951te-1_a3.pdf This is an approximately 7x9cm card with a large 4 digit LED display, 5 push buttons, rel..." |
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I bought this figuring it looked like a fun board to reprogram if I did not use it as a temperature controller. I don't see any source code floating around the Internet for it, so I will create some. :-) | |||
First I thought I'd try it out in its stock form. Then I packed and moved from Oregon to California and lost the controller! I am sure it's one of my storage bins! But coding is more fun that searching bins... | |||
The | Here is the [http://futurekit.com/2009/manual/future/eng/PDF_FK9/fk951te-1_a3.pdf data sheet for this kit]. | ||
This is an approximately 8x10cm card with a large 4 digit red LED display, 5 push buttons, relay, LED, two 3 pin headers to connect temperature sensors via 3 wire ribbon, and a | |||
7806 6vdc regulator. (6 volt? really? There is a diode inline that drops it below the 5.5vmax for the CPU.) | |||
Board input power is spec'ed at 12vdc, so that the 12v relay can fire. I bet it would work down to the dropout of the voltage regulator, which must be around 8 volts. High voltage input is determined by other components (like electrolytic caps) but should be fine up to about 14vdc. | |||
The controller that I lost is an ATMega8, I am upgrading to an ATmega328P to make it more compatible with my shiny new [[Arduino Uno]]. It will drop right in. I bought a replacement along with a USB tiny ISP programmer from Sparkfun; this board has pads for a 6 pin inline header that taps into the ICSP lines so I can reprogram the controller in situ. | |||
Sensors are one-wire DS18B20 https://www.sparkfun.com/products/245 | |||
7 segment LED display: | 7 segment LED display: | ||
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Sensor #1 is on port B1 | Sensor #1 is on port B1 | ||
optional sensor #2 is on port B2 | optional sensor #2 is on port B2 | ||
[[Category: Electronics]] | |||
Revision as of 18:39, 24 July 2015
I bought this figuring it looked like a fun board to reprogram if I did not use it as a temperature controller. I don't see any source code floating around the Internet for it, so I will create some. :-)
First I thought I'd try it out in its stock form. Then I packed and moved from Oregon to California and lost the controller! I am sure it's one of my storage bins! But coding is more fun that searching bins...
Here is the data sheet for this kit.
This is an approximately 8x10cm card with a large 4 digit red LED display, 5 push buttons, relay, LED, two 3 pin headers to connect temperature sensors via 3 wire ribbon, and a 7806 6vdc regulator. (6 volt? really? There is a diode inline that drops it below the 5.5vmax for the CPU.)
Board input power is spec'ed at 12vdc, so that the 12v relay can fire. I bet it would work down to the dropout of the voltage regulator, which must be around 8 volts. High voltage input is determined by other components (like electrolytic caps) but should be fine up to about 14vdc.
The controller that I lost is an ATMega8, I am upgrading to an ATmega328P to make it more compatible with my shiny new Arduino Uno. It will drop right in. I bought a replacement along with a USB tiny ISP programmer from Sparkfun; this board has pads for a 6 pin inline header that taps into the ICSP lines so I can reprogram the controller in situ.
Sensors are one-wire DS18B20 https://www.sparkfun.com/products/245
7 segment LED display: port D0-D7 control the segments:
D0 g D1 c D2 d D3 e D4 dt D5 b D6 f D7 a
port B0,C3,C4,C5 select the digit
C5 1 (numbered left to right) C4 2 C3 3 B0 4
Push buttons are on
1 MOSI 2 MISO 3 SCK 4 D7 (shared with 7-seg segment 'a') 5 D6 (shared with 'f')
Relay is on C0
Sensor #1 is on port B1 optional sensor #2 is on port B2
