Project "Lazy BBQing": Step 4 Graphing, Case design and Food

So I have not updated this in a while. But i got some excellent results.

First, I have the PID tuned very nicely and used google charts to draw the graph

I simplified the status screen

I enclosed the stuff in a Lego Box

I even make a version that works with electric hot plates. I switched over to Solid State Relays instead of the router speed controller.

Finally, the food

Next step switch over to using cheaper probes and using easier to find parts.

Project "Lazy BBQing": Step 3 Making a fan/turning

Created a mount for the fan to go onto the Big Green Egg with manual adjustable flow rate control.
Used roof flashing and a pair of aluminium cutters

So did 2 test runs with the green egg.

Setup:

Run 1: Hold temp 180*F - top vent was open too much, couldn't cool down the egg to sub 200. Also temp probe was mounted too low so there were a lot of fluctuations in the reading.

Run 2: Hold temp 300*F - almost perfect

Next temp going to grill with it. Make sure it all works.

Also want to increase the sample time to .5 second or .25 seconds to get a smoother curve.

Project "Lazy BBQing": Step 2 - Remote access

Install TightVNC on raspberry pi, a viewer on my tablet and an set TightVNC as a autostart up. Log sensor temp to unique log files grouped by start up time.
Make a pizza and watch it all work.
Not bad for someone with a dumb phone.

https://learn.adafruit.com/adafruit-raspberry-pi-lesson-7-remote-control-with-vnc

Also enabled SSH in Raspi-config

Project "Lazy BBQing" - Step 1 - Measure temps

Project "Lazy BBQing" step 1 complete: Reading temp with a Raspberry Pi. Ever wonder why it is a bad idea to touch a soldering iron? Because it is 520+ Degrees F.