Hi. Now just get a inexpensive portable voice amplifier and free up those hands! Go Digital . Ha. I works great too.Just saying.
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Then you can apply Machine Learning, or better, Deep Learning, to the data series after you’ve run it through and FFT and you and predict, via labeling and multiple eons of learning fed into a pi-torch model to figure out when first crack occurs.
Or, simply listen.
It’s nice when someone puts forth the time and skills to make a really great product. The Bullet deserves a good cooling tray and it sounds like this one is probably what Aillio should be shipping with their roasters.
Hello there,
I’m having a hard time hearing the first crack, and was googling for a solution and came across this post. Is the amplifier still working for you?
Thanks
I am still using the amplifier after 2 years and it works well.
If I am roasting several batches of the same bean, I only use the amplifier for the first batch.
Because I have hearing loss, I also added another amplifier to the back of the front control panel so that I can hear the “deadman” alarm. The deadman alarm does not come from the internal speaker. It comes from an electronic buzzer device that is soldered to the circuit board.
In the photo below, I have drawn a red rectangle around the buzzer. Note that the USB receptacle is right next to the buzzer. I very carefully drilled a hole in line with the buzzer so that I could attach the second microphone there.
Here is a photo of the second microphone in place
This has been a huge help to me.
Edit: here is a good view of the silicone tube that I modified with an scalpel to fit the trier hole.
On Amazon, I found a dual microphone setup that allows me to use one amplifier with 2 microphones.
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This is extremely helpful. Thank you so much for taking the time to explain everything above. I’m not that handy, but I’ll try to start with one amplifier and see how it goes. I’m going to go back to your previous post and buy the same amplifier from ama on.
Thanks again
My original idea for the voice amplifier still works great. On my second amplifier. I wouldn’t be without it.
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