# 18 Potentiometers with 74HC595

**URL:** <https://forum.xod.io/t/18-potentiometers-with-74hc595/6127>\
**Category:** Uncategorized\
**Created:** [June 23, 2022, 7:07pm UTC](https://forum.xod.io/t/18-potentiometers-with-74hc595/6127 "2022-06-23T19:07:34Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![jacob-wiqvist](https://avatars.discourse-cdn.com/v4/letter/j/43a26b/32.png) [@jacob-wiqvist](https://forum.xod.io/u/jacob-wiqvist)\
**Post date:** [June 23, 2022, 7:07pm UTC](https://forum.xod.io/t/18-potentiometers-with-74hc595/6127/1 "2022-06-23T19:07:34Z")

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Is it possible to use 74HC595 to connect 18 Potentiometers with xod ide.

If so.

Can someone explain how I would do that?

Best regards Jacob

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**Author:** ![gweimer](https://avatars.discourse-cdn.com/v4/letter/g/a9adbd/32.png) [@gweimer](https://forum.xod.io/u/gweimer)\
**Post date:** [June 23, 2022, 10:48pm UTC](https://forum.xod.io/t/18-potentiometers-with-74hc595/6127/2 "2022-06-23T22:48:06Z")

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No. 74HC595 is a shift register…it converts between serial and parallel for digital data. You either need an analog multiplexer or an analog expansion board as summarized here: [adc - Expanding analog inputs to the Arduino - Arduino Stack Exchange](https://arduino.stackexchange.com/questions/21536/expanding-analog-inputs-to-the-arduino)

One of the replies here: [https://www.quora.com/How-do-you-expand-analog-inputs-to-the-Arduino-ADC-Arduino?share=1](https://www.quora.com/How-do-you-expand-analog-inputs-to-the-Arduino-ADC-Arduino?share=1) lists several analog to digital converter options that might apply for your case.

There are plenty of other options like [Extend your analog inputs - Hackster.io](https://www.hackster.io/remnis/extend-your-analog-inputs-a5fefa), [PCF8591 (i2c Analog I/O Expander) Fast Easy Usage : 9 Steps - Instructables](https://www.instructables.com/PCF8591-i2c-Analog-IO-Expander-Fast-Easy-Usage/), etc.

XOD already has [hussainfawzi/max5217-16bit-dac — XOD](https://xod.io/libs/hussainfawzi/max5217-16bit-dac/), but that part only reads a single channel, so you need lots of them or multiplexer(s), so it might not be much of an improvement over the on-board ADC if you don’t need higher resolution.

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**Author:** ![system](https://canada1.discourse-cdn.com/flex027/uploads/xod/original/1X/eb7348baa04192c2ef932d1db54d44f09f8a7888.png) [@system](https://forum.xod.io/u/system)\
**Post date:** [July 23, 2022, 10:48pm UTC](https://forum.xod.io/t/18-potentiometers-with-74hc595/6127/3 "2022-07-23T22:48:32Z")

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