Difference between revisions of "Ceramic Kiln/Controller"
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* Status: reading temp and displaying it on lcd display; I'm waiting on the SSR from ebay to start integrated kiln testing. The high fire Type K thermocouple arrived and is installed. | * Status: reading temp and displaying it on lcd display; I'm waiting on the SSR from ebay to start integrated kiln testing. The high fire Type K thermocouple arrived and is installed. | ||
| + | |||
| + | == Usecases == | ||
| + | |||
| + | 1.'''Turn On / Clear''' | ||
| + | * Press Init Button | ||
| + | 2.'''Select Cone''' | ||
| + | * Starts at 022 and goes to 8 | ||
| + | 3.'''Select Hold Time (mutually exclusive with the physical cone switch)''' | ||
| + | * 0 to 9 hrs | ||
| + | 4.'''Select Kiln Mode - default is Fast speed''' | ||
| + | * Press Mode Button to switch between Slow, Medium, Fast, Slow w/ controlled cooling, Medium w/ C.C. (back to slow) | ||
| + | {| | ||
| + | |- | ||
| + | ! style="background: #EEEEEE"| Mode | ||
| + | ! style="background: #EEEEEE"| Time Segments | ||
| + | ! style="background: #EEEEEE"| Description | ||
| + | |- | ||
| + | | Fast | ||
| + | | 1 | ||
| + | | Balls to the wall/As hot as the elements can get | ||
| + | |- | ||
| + | | Medium | ||
| + | | 4 | ||
| + | | 1(0F-250F@200F/hr), 2(250F-1000F@400F/hr), 3(1000F-1200F@180F/hr), 4(1200F-1700F@300F/hr), Further heating at 200F/hr | ||
| + | |- | ||
| + | | Slow | ||
| + | | 4 | ||
| + | | 1(0F-250F@80/hr), 2(250F-1000F@250/hr), 3(1000F-1200F@150/hr), 4(1200F-1700F@180/hr), Further heating at 80F/hr | ||
| + | |- | ||
| + | | Slow w/Controlled Cooling | ||
| + | | 8/9 | ||
| + | | Heating cycle as Slow. Cooling is a reverse of Segments. | ||
| + | |- | ||
| + | | Medium w/Controlled Cooling | ||
| + | | 8/9 | ||
| + | | Heating cycle as Medium. Cooling is a reverse of Segments. | ||
| + | |} | ||
| + | 5.'''Start Button''' | ||
| + | * Verifies all selections are valid and begins Firing Cycle. | ||
Revision as of 02:44, 9 March 2013
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Creator: |
Overview
I'm building an arduino based kiln controller for driving our Kiln.
Goals/Features
- Add mode button for Candling. (raise temp to 190F and maintain temp for 12 hours.)
- Add mode buttons for Timed Firing (not sure how this might be useful, but then I know nothing of ceramic arts either. maybe glazing?)
- Add mode button for Gradual Heating (slowly heat the kiln as opposed to full electric on.)
Materials/Links
- Arduino Uno
- Thermocouple Amplifier MAX31855 breakout board ($20)
- Type K High Temp Thermocouple ($28)
- DC-AC Solid State Relay SSR-40DA 40A 3-32VDC 24-380VAC w Heat Sink ($24)
- DigiSpark Relay Shield (because I had spares and am a little afraid of hooking the SSR directly to the arduino without a transistor circuit; also I'm lazy)
Technical Details
- Status: reading temp and displaying it on lcd display; I'm waiting on the SSR from ebay to start integrated kiln testing. The high fire Type K thermocouple arrived and is installed.
Usecases
1.Turn On / Clear
- Press Init Button
2.Select Cone
- Starts at 022 and goes to 8
3.Select Hold Time (mutually exclusive with the physical cone switch)
- 0 to 9 hrs
4.Select Kiln Mode - default is Fast speed
- Press Mode Button to switch between Slow, Medium, Fast, Slow w/ controlled cooling, Medium w/ C.C. (back to slow)
| Mode | Time Segments | Description |
|---|---|---|
| Fast | 1 | Balls to the wall/As hot as the elements can get |
| Medium | 4 | 1(0F-250F@200F/hr), 2(250F-1000F@400F/hr), 3(1000F-1200F@180F/hr), 4(1200F-1700F@300F/hr), Further heating at 200F/hr |
| Slow | 4 | 1(0F-250F@80/hr), 2(250F-1000F@250/hr), 3(1000F-1200F@150/hr), 4(1200F-1700F@180/hr), Further heating at 80F/hr |
| Slow w/Controlled Cooling | 8/9 | Heating cycle as Slow. Cooling is a reverse of Segments. |
| Medium w/Controlled Cooling | 8/9 | Heating cycle as Medium. Cooling is a reverse of Segments. |
5.Start Button
- Verifies all selections are valid and begins Firing Cycle.
