FutureKit Temperature Controller: Difference between revisions
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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. :-) | 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 | First I thought I'd try it out in its stock form. Then I packed and moved from Oregon to California and lost the ATmega8 microcontroller! I am sure it's one of my storage bins! But coding is more fun that searching bins... | ||
Here is the [http://futurekit.com/2009/manual/future/eng/PDF_FK9/fk951te-1_a3.pdf data sheet for this kit]. | Here is the [http://futurekit.com/2009/manual/future/eng/PDF_FK9/fk951te-1_a3.pdf data sheet for this kit]. | ||
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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. | 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. | ||
I am upgrading to an ATmega328P microcontroller 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 | Sensors are one-wire DS18B20 https://www.sparkfun.com/products/245 | ||
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7 segment LED display: | 7 segment LED display: | ||
port D0-D7 control the segments: | port D0-D7 control the segments: | ||
PD0 g | |||
PD1 c | |||
PD2 d | |||
PD3 e | |||
PD4 dt | |||
PD5 b | |||
PD6 f | |||
PD7 a | |||
port | port PB0,PC3,PC4,PC5 select the digit | ||
PC5 1 (numbered left to right) | |||
PC4 2 | |||
PC3 3 | |||
PB0 4 | |||
Push buttons are on | Push buttons are on | ||
1 MOSI | 1 PB3 (MOSI) | ||
2 MISO | 2 PB4 (MISO) | ||
3 SCK | 3 PB5 (SCK) | ||
4 | 4 PD7 (shared with 7-seg segment 'a') | ||
5 | 5 PD6 (shared with 'f') | ||
Relay is on C0 | Relay is on C0 | ||
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optional sensor #2 is on port B2 | optional sensor #2 is on port B2 | ||
There is a programming port 1x6 | |||
1 RST | |||
2 GND | |||
3 MOSI | |||
4 MISO | |||
5 SCK | |||
6 +5V | |||
There is a 2x3 port, undocumented | |||
PC1 (ADC1/PCINT9) 1 6 PC2 (ADC2/PCINT10) | |||
GND 2 5 GND | |||
+12V 3 4 +12V | |||
[[Category: Electronics]] | [[Category: Electronics]] | ||
Revision as of 00:55, 29 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 ATmega8 microcontroller! 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.
I am upgrading to an ATmega328P microcontroller 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:
PD0 g PD1 c PD2 d PD3 e PD4 dt PD5 b PD6 f PD7 a
port PB0,PC3,PC4,PC5 select the digit
PC5 1 (numbered left to right) PC4 2 PC3 3 PB0 4
Push buttons are on
1 PB3 (MOSI) 2 PB4 (MISO) 3 PB5 (SCK) 4 PD7 (shared with 7-seg segment 'a') 5 PD6 (shared with 'f')
Relay is on C0
Sensor #1 is on port B1 optional sensor #2 is on port B2
There is a programming port 1x6
1 RST 2 GND 3 MOSI 4 MISO 5 SCK 6 +5V
There is a 2x3 port, undocumented
PC1 (ADC1/PCINT9) 1 6 PC2 (ADC2/PCINT10)
GND 2 5 GND
+12V 3 4 +12V
