Temperature control - Revision history

Cartridge1987: /* writing the software */

2015-11-11T11:07:14Z

writing the software

Rew: /* writing the software */

2012-03-23T10:48:12Z

writing the software

Tom: /* writing the software */

2012-03-22T16:14:26Z

writing the software

Rew: /* Putting the hardware together */

2012-03-22T16:06:08Z

Putting the hardware together

Rew at 16:05, 22 March 2012

2012-03-22T16:05:46Z

Rew: /* Putting the hardware together */

2012-03-22T16:02:03Z

Putting the hardware together

Rew: /* writing the software */

2012-03-22T16:00:41Z

writing the software

Rew: /* writing the software */

2012-03-22T16:00:17Z

writing the software

Rew: /* Putting the hardware together */

2012-03-22T15:59:51Z

Putting the hardware together

Rew: Created page with "= intro = I wanted to demonstrate that temperature control using three of our boards would be easy. I will replicate this experiemnt at home to make a "sous vide" setup short..."

2012-03-22T15:20:25Z

Created page with "= intro = I wanted to demonstrate that temperature control using three of our boards would be easy. I will replicate this experiemnt at home to make a "sous vide" setup short..."

New page

= intro =

I wanted to demonstrate that temperature control using three of our boards would be easy. I will replicate this experiemnt at home to make a "sous vide" setup shortly.

= Putting the hardware together =

I took my ftdi_atmega

@@ Line 26: / Line 26: @@
 and I extended the LM35 sensor (and waterproofed it). I put the sensor in the water in the coffee pot.
-= writing the software =
+= Writing the software =
 I took the spi_atmega demo application, and modified it to add temperature control. This was really easy:

@@ Line 34: / Line 34: @@
     unsigned char heater;
     static unsigned char curheater = -1;
     t0 = SPI_getu16 (SPI_TEMP, 0x28);
     //pputs ("t0 = ");hexshort (t0);
     t0 = (t0 * 1000/11) >> 16;
     // pputs (" t0 = ");hexshort (t0);
     heater = (t0 < wanted_temp);
     pputs (" t0 = ");hexshort (t0);
     pputs (" wt = ");hexbyte (wanted_temp);

@@ Line 34: / Line 34: @@
     unsigned char heater;
     static unsigned char curheater = -1;
     t0 = SPI_getu16 (SPI_TEMP, 0x28);
     //pputs ("t0 = ");hexshort (t0);
     t0 = (t0 * 1000/11) >> 16;
     // pputs (" t0 = ");hexshort (t0);
     heater = (t0 < wanted_temp);
     pputs (" t0 = ");hexshort (t0);
     pputs (" wt = ");hexbyte (wanted_temp);

@@ Line 13: / Line 13: @@
 [[File:tempcontroller_02_spi_temp.jpg|200px|thumb|none|spi_temp board]]
-The spi cable was then daisychained to the next board:
+The spi cable was then daisychained to the next board: spi_relay
 [[File:tempcontroller_03_spi_relay.jpg|200px|thumb|none|spi_relay board]]

@@ Line 5: / Line 5: @@
 = Putting the hardware together =
-== atmega ==
 I took my ftdi_atmega
-[[File:tempcontroller_01_ftdi_atmega.jpg|200px|thumb|left|FTDI ATMEGA PCB]]
+[[File:tempcontroller_01_ftdi_atmega.jpg|200px|thumb|none|FTDI ATMEGA PCB]]
-== spi_temp ==
 and used a standard 6 pin SPI cable to connect it to my spi_temp board.
-[[File:tempcontroller_02_spi_temp.jpg|200px|thumb|left|spi_temp board]]
+[[File:tempcontroller_02_spi_temp.jpg|200px|thumb|none|spi_temp board]]
-== spi_relay ==
 The spi cable was then daisychained to the next board:
-[[File:tempcontroller_03_spi_relay.jpg|200px|thumb|left|spi_relay board]]
+[[File:tempcontroller_03_spi_relay.jpg|200px|thumb|none|spi_relay board]]
-== extension cord ==
 The Relay was hooked up to an extension cord. This way the relay would control the power to the extension cord.
-[[File:tempcontroller_04_relay_and_extensioncord.jpg|200px|thumb|left|spi_relay and the extension cord]]
+[[File:tempcontroller_04_relay_and_extensioncord.jpg|200px|thumb|none|spi_relay and the extension cord]]
-== coffee pot ==
 Next I hooked up the coffee pot to the extension cord.
-[[File:tempcontroller_05_coffee_pot.jpg|200px|thumb|left|coffee machine]]
+[[File:tempcontroller_05_coffee_pot.jpg|200px|thumb|none|coffee machine]]
 and I extended the LM35 sensor (and waterproofed it). I put the sensor in the water in the coffee pot.

@@ Line 25: / Line 25: @@
 I took the spi_atmega demo application, and modified it to add temperature control. This was really easy:
 <code>
-if (wanted_temp && tchanged) {
+ if (wanted_temp && tchanged) {
     long t0;
     unsigned char heater;