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mission:resources:picoreflow [2016-09-21 09:20] – [picoReflow] chronomission:resources:picoreflow [2016-10-27 22:33] (current) – [Heating] chrono
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 In order to be able to work with these chips, a reflow solder process is needed. So we've built our own DIY reflow oven, using a Raspberry Pi as a universal, web enabled, PID Reflow Oven Controller driving a convectional hot air oven originally designated for gastronomy/bakery purposes.  In order to be able to work with these chips, a reflow solder process is needed. So we've built our own DIY reflow oven, using a Raspberry Pi as a universal, web enabled, PID Reflow Oven Controller driving a convectional hot air oven originally designated for gastronomy/bakery purposes. 
  
-Since it's all open-source you may also use it to build the world's most sophisticated pizza oven controller and experiment with temperature curves for fresh/frozen pizza and has also been reported to be used in other lab/production processing systems and autonomous climate testing applications.+Since it's all open-source you may also use it to build a kiln controller, the world's most sophisticated pizza oven controller and experiment with temperature curves for fresh/frozen pizza and has also been reported to be used in other lab/production processing systems and autonomous climate testing.
  
 <WRAP round alert> <WRAP round alert>
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 ==== Heating ==== ==== Heating ====
 +
 +=== Load Wiring ===
 +
 +{{:mission:resources:picoreflow-ssr-load-connection.png|}}
 +
 +=== Signal Wiring ===
  
 SSR connected to P1-23 SSR connected to P1-23
  
 +^ PullDown Connection (default) ^ PullUp Connection (alternative) ^
 +| {{:mission:resources:picoreflow-ssr-signal-pulldown-connection.png?320|}} | {{:mission:resources:picoreflow-ssr-signal-pullup-connection.png?320|}} |
 +
 +
 +The default configuration has historically been to use the PullDown config, which results in an inverted control logic: When you pull GPIO23 low, the heater is switched on and when you pull GPIO23 high, the heater is switched off. 
 +
 +<WRAP round important>
 +**Please keep in mind that you'll have to have some script/code in your setup that makes sure that GPIO23 is pulled high as soon as the system has booted** (to be sure the heater is off) or change your setup to PullUp configuration instead, if you don't want to worry/bother.
 +</WRAP>
 ==== Cooling ==== ==== Cooling ====
  
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 A custom built oven to bake carbon composite parts.   A custom built oven to bake carbon composite parts.  
 +
 +==== WiFi/Raspberry Pi pottery kiln controller ====  
 +
 +{{:mission:resources:kilnrunning.jpg|}}
 +
 +http://succulentceramics.com/2016/10/07/wifiraspberry-kiln-controller/
 +
  
 {{tag>research lab reflow oven pid controller raspberry pi picofab software hardware}} {{tag>research lab reflow oven pid controller raspberry pi picofab software hardware}}
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