# New mapper type possibly

**URL:** <https://rpi-rgb-led-matrix.discourse.group/t/new-mapper-type-possibly/1006>\
**Category:** Uncategorized\
**Created:** [January 28, 2025, 6:40pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/new-mapper-type-possibly/1006 "2025-01-28T18:40:08Z")\
**Posts on this page:** 4\
**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:** [January 28, 2025, 6:40pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/new-mapper-type-possibly/1006/1 "2025-01-28T18:40:08Z")

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![1000125309](https://global.discourse-cdn.com/free1/uploads/rpi_rgb_led_matrix/original/1X/e25ca9b1a6dab1ccf89e55c218e679a325d5330b.jpeg)

Able to run the first panel with the configuration mentioned. Need help with the code of the new multiplex mapper of Panel 2. Please suggest the solution

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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:** [January 29, 2025, 4:22am UTC](https://rpi-rgb-led-matrix.discourse.group/t/new-mapper-type-possibly/1006/2 "2025-01-29T04:22:26Z")

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See [How to implement this custom pixel-mapper? · Issue #1010 · hzeller/rpi-rgb-led-matrix · GitHub](https://github.com/hzeller/rpi-rgb-led-matrix/issues/1010)  
and [Vmapper by marcmerlin · Pull Request #1009 · hzeller/rpi-rgb-led-matrix · GitHub](https://github.com/hzeller/rpi-rgb-led-matrix/pull/1009)

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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:** [January 29, 2025, 4:35am UTC](https://rpi-rgb-led-matrix.discourse.group/t/new-mapper-type-possibly/1006/3 "2025-01-29T04:35:01Z")

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Actually the diagram I have made is of one single LED module. Not the panel configuration

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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:** [January 29, 2025, 4:49am UTC](https://rpi-rgb-led-matrix.discourse.group/t/new-mapper-type-possibly/1006/4 "2025-01-29T04:49:56Z")

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Sorry, pixel mapper, not panel mapper. Still, look around that area of the code, the mapping code effectively does not know or care where the panel boundaries are. The Vmapper:Z code I wrote inverts all the pixels within a panel, inverting lines or whatever within a panel is ultimately similar