# Need help to create new multiplex mapper for single data line input

**URL:** <https://rpi-rgb-led-matrix.discourse.group/t/need-help-to-create-new-multiplex-mapper-for-single-data-line-input/279>\
**Category:** Uncategorized\
**Created:** [July 12, 2021, 9:52am UTC](https://rpi-rgb-led-matrix.discourse.group/t/need-help-to-create-new-multiplex-mapper-for-single-data-line-input/279 "2021-07-12T09:52:27Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![arahasya](https://avatars.discourse-cdn.com/v4/letter/a/8baadc/32.png) [@arahasya](https://rpi-rgb-led-matrix.discourse.group/u/arahasya)\
**Post date:** [July 12, 2021, 9:52am UTC](https://rpi-rgb-led-matrix.discourse.group/t/need-help-to-create-new-multiplex-mapper-for-single-data-line-input/279/1 "2021-07-12T09:52:27Z")

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Hi

I have manufactured panels of 16 rows and 48 cols single colour. It has only only data input and 8 scan configuration. Currently I have to define --led-rows=32 --led-cols=48 --led-multipelxing=1 to make this work

That is I must define double the rows than connected (in case of odd number of rows).

So I need help for this new stripe type mapper.

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**Author:** ![marcmerlin](https://yyz2.discourse-cdn.com/free1/user_avatar/rpi-rgb-led-matrix.discourse.group/marcmerlin/32/40_2.png) [@marcmerlin](https://rpi-rgb-led-matrix.discourse.group/u/marcmerlin)\
**Post date:** [August 2, 2021, 5:06am UTC](https://rpi-rgb-led-matrix.discourse.group/t/need-help-to-create-new-multiplex-mapper-for-single-data-line-input/279/2 "2021-08-02T05:06:36Z")

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sorry, you may have to write this code yourself since other people do not have the same panels.