# Sensor/Actuator Boards

**URL:** https://www.evolver.bio/c/hardware/sa-boards/12.md

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## [About the Sensor/Actuator Boards category](https://www.evolver.bio/t/about-the-sensor-actuator-boards-category/22)

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**Author:** [@bgwong](https://www.evolver.bio/u/bgwong)\
**Replies:** 0

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## [PWM (Tlc5940) values are not linear and saturate midrange](https://www.evolver.bio/t/pwm-tlc5940-values-are-not-linear-and-saturate-midrange/345)

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**Author:** [@Nate\_Borders](https://www.evolver.bio/u/Nate_Borders)\
**Replies:** 9\
**Last updated:** [December 16, 2024, 10:10pm UTC](https://www.evolver.bio/t/pwm-tlc5940-values-are-not-linear-and-saturate-midrange/345 "2024-12-16T22:10:02Z")

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PWM Val 0 250 500 750 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2020 2040 2041 2042 2043 2044 2045 2050 2100 4095 Voltage 12 11.86 11.33 10.58 9.27 8.84 8.26 7.67 7.09 6.51 5.92 5.35 4.79 4.21 3.7 3.…

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## [OD LED Power Level vs resistor packs](https://www.evolver.bio/t/od-led-power-level-vs-resistor-packs/87)

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**Author:** [@cmancuso](https://www.evolver.bio/u/cmancuso)\
**Replies:** 22\
**Last updated:** [July 10, 2023, 5:24pm UTC](https://www.evolver.bio/t/od-led-power-level-vs-resistor-packs/87 "2023-07-10T17:24:03Z")

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Swapping out the resistor packs on the ADC board used to measure OD allows you to tune the range of measurable ODs and the amount of noise in the data. The choice is evaluated by doing an OD calibration, to map eVOLVER s…

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## [The OMIT resistors](https://www.evolver.bio/t/the-omit-resistors/137)

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**Author:** [@sweettiger](https://www.evolver.bio/u/sweettiger)\
**Replies:** 3\
**Last updated:** [September 7, 2019, 7:45am UTC](https://www.evolver.bio/t/the-omit-resistors/137 "2019-09-07T07:45:33Z")

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@bgwong Could you please give a suggested resistance to the OMIT resistors on ADC board? ! \[R10 R11 R14 R15 R18 R19 R2 R22 R23 R26 R27 R3 R30 R31 R34 R35 R38 R39 R42 R43 R46 R47 R50 R51 R54 R55 R58 R59 R6 R62 R63 R7\]

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## [BOM file of the Vial Board](https://www.evolver.bio/t/bom-file-of-the-vial-board/136)

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**Author:** [@sweettiger](https://www.evolver.bio/u/sweettiger)\
**Replies:** 2\
**Last updated:** [August 30, 2019, 3:46am UTC](https://www.evolver.bio/t/bom-file-of-the-vial-board/136 "2019-08-30T03:46:21Z")

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I checked the board designs. There lacks a BOM file for the vial board. Could you supply us more details about the vial board? @bgwong