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jansonntag:attempt3
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jansonntag:attempt3 [2021/02/08 10:48] jan |
jansonntag:attempt3 [2021/03/24 17:10] (current) jan |
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| - | ====== Analog Cherry Keyboard Attempt 3 (WIP) ====== | + | ====== Analog Cherry Keyboard Attempt 3 ====== |
| After a while of looking at it, this seems far too complicated! There have to be simpler, cheaper, and more accurate solutions. I started searching for some ICs that maybe can do the trick but didn't found any good other than the links I posted above. But then Henrik found something great: The LDC1314 | After a while of looking at it, this seems far too complicated! There have to be simpler, cheaper, and more accurate solutions. I started searching for some ICs that maybe can do the trick but didn't found any good other than the links I posted above. But then Henrik found something great: The LDC1314 | ||
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| Let's go through this code step by step: | Let's go through this code step by step: | ||
| - Import the library and the Wire library (I2C) | - Import the library and the Wire library (I2C) | ||
| - | - Then instantiate an LDC131X Object (the false means now alternative address) | + | - Then instantiate an LDC131X Object (the false means no alternative address) |
| - The lastTen and pointer variables are needed later to calculate an average of 10 measurements | - The lastTen and pointer variables are needed later to calculate an average of 10 measurements | ||
| - The setup starts with initiating the Wire and Serial communication | - The setup starts with initiating the Wire and Serial communication | ||
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| As you may see the graph shows when the button is pressed and how far it is pressed. But the result is not very accurate and there is a lot of interference. This is because of the high gain I set. But otherwise, there wouldn' | As you may see the graph shows when the button is pressed and how far it is pressed. But the result is not very accurate and there is a lot of interference. This is because of the high gain I set. But otherwise, there wouldn' | ||
| - | So there will be an attempt 4. There I will test out the bigger brother of the LDC1314. The LDC1614. It has the same pinout and overall package, so it will be an in-place replacement. The big advantage is the 28-bit resolution. Hopefully, there is no gain needed then. | + | So there will be an attempt 4. There I will test out the bigger brother of the LDC1314: The LDC1614. It has the same pinout and overall package, so it will be an in-place replacement. The big advantage is the 28-bit resolution. Hopefully, there is no gain needed then. |
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| + | [[JanSonntag: | ||
jansonntag/attempt3.1612781296.txt.gz · Last modified: 2021/02/08 10:48 by jan
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