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Control the LEDs from I2C in order to control the max intensity #53

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lpatiny opened this issue Mar 18, 2018 · 1 comment
Open

Control the LEDs from I2C in order to control the max intensity #53

lpatiny opened this issue Mar 18, 2018 · 1 comment
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lpatiny commented Mar 18, 2018 •
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Currently we need to tune manually the led resistors to get all the range of the spectrophotometer. We should do this by software:

  • MCP445x or MCP444x : digital potentiometer
  • could select a 5k, 8bits like MCP4452. This means that we can control the resistor by step of 25 ohms. Even for UV it will be ok (need to take care of the program in order to put a minimal resistor otherwise we will burn the chip)
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lpatiny commented Jun 7, 2018

Should work and much cheaper than digital resistor

@lpatiny lpatiny mentioned this issue Sep 26, 2018
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@lpatiny lpatiny changed the title Control de LEDs from I2C using MCP4728 Control de LEDs from I2C in order to control the max intensity Sep 26, 2018
@lpatiny lpatiny changed the title Control de LEDs from I2C in order to control the max intensity Control the LEDs from I2C in order to control the max intensity Oct 9, 2018
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