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Building the Google Open Nsynth Super

Andrew Back
4
Open source (hardware and software!) advocate, Treasurer and Director of the Free and Open Source Silicon Foundation, organiser of Wuthering Bytes technology festival and founder of the Open Source Hardware User Group.

Comments

May 31, 2018 12:48

I understand that you used two processors because the touch sensor has only one I2C address. Why waste processors like that when a simple analogue switch will split the I2C bus and allow two touch sensor chips on one bus?

0 Votes

April 30, 2018 11:34

Very interesting stuff! A ballpark build cost would be very useful for those of us on a budget, so we can get some idea of whether to wade further into making one :o)

0 Votes

May 1, 2018 08:00

@ellisjr For the cost of turning the PWB from someone like Advanced Circuits, it's coming out to $33 per unit. Pricing components from the open-nsynth-super.csv file, I'm estimating around $152 from Digikey, Amazon and AdaFruit combined. So you're looking at probably $200 per unit if you don't buy components in bulk.

May 1, 2018 08:15

For a masked 2-layer board on Advanced Circuits, you're looking at $33 per board (60 sq in ~= 7.75x7.75-in, which is what this will handle). Tried using the project's "Procurement BOM" embedded into one of the readme files, but then found they were just sticking random links to 1206 components, so using open-nsynth-super I priced components from Digikey/Amazon/Adafruit to total around $152.57. So you're looking at probably $200 minimum.

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