Woo Hoo!!!
I can now temperature control the Behmor using Artisan. I initially built an Arduino based HID as a stand alone device to digitally control the temp. This allowed me to infinitely vary the heater output. Yesterday I figured out how to get Artisan to talk to my device, Big Win!!!
Next step is my holy grail, to automate the roasting.
While I had the Behmor apart I had a crack at installing a buzzer whenever the display flashes. It was much more difficult than I thought. My current solution involves some additional circuitry installed in the Behmor and in my HID. It essentially measures the voltage going to the display (much more difficult than it sounds) and triggers a buzzer when it crosses a predetermine threshold. The threshold still needs some tweaking as it is sounding at random times during the roast. Unfortunately the threshold is hard coded (lack of foresight) which makes testing a slow process. I may have to make it user adjustable if I can't figure it out soon. In the mean time, I am still using a timer as a backup.
If anyone has an easy way to implementing a buzzer I'd love to know. FYI the Behmor uses a 44 pin SH69P55AF microprocessor and there are spare pins if anyone knows how to reprogram it.
Atm I'm still waiting on some parts. Once the build is complete it will all go into a nice pretty enclosure and look not so DIY.
I can now temperature control the Behmor using Artisan. I initially built an Arduino based HID as a stand alone device to digitally control the temp. This allowed me to infinitely vary the heater output. Yesterday I figured out how to get Artisan to talk to my device, Big Win!!!
Next step is my holy grail, to automate the roasting.
While I had the Behmor apart I had a crack at installing a buzzer whenever the display flashes. It was much more difficult than I thought. My current solution involves some additional circuitry installed in the Behmor and in my HID. It essentially measures the voltage going to the display (much more difficult than it sounds) and triggers a buzzer when it crosses a predetermine threshold. The threshold still needs some tweaking as it is sounding at random times during the roast. Unfortunately the threshold is hard coded (lack of foresight) which makes testing a slow process. I may have to make it user adjustable if I can't figure it out soon. In the mean time, I am still using a timer as a backup.
If anyone has an easy way to implementing a buzzer I'd love to know. FYI the Behmor uses a 44 pin SH69P55AF microprocessor and there are spare pins if anyone knows how to reprogram it.
Atm I'm still waiting on some parts. Once the build is complete it will all go into a nice pretty enclosure and look not so DIY.
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