# How to visualize temperature map MLX90640

**URL:** <https://discourse.nodered.org/t/how-to-visualize-temperature-map-mlx90640/7856>\
**Category:** Dashboard\
**Created:** [12 February 2019 02:01 UTC](https://discourse.nodered.org/t/how-to-visualize-temperature-map-mlx90640/7856 "2019-02-12T02:01:05Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![BartButenaers](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/bartbutenaers/32/10476_2.png) [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Post date:** [15 February 2019 12:02 UTC](https://discourse.nodered.org/t/how-to-visualize-temperature-map-mlx90640/7856/8 "2019-02-15T12:02:57Z")

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> [@janek](#):
>
> how can I access the frame buffer and display on the canvas on nodered

Hey @janek, I'm currently developing something that should allow you to show a heatmap in the Node-RED dashboard. Had an [issue](https://discourse.nodered.org/t/custom-ui-node-layout-problems/7731/20) with that last night, but @dceejay already proposad a solution. If that works, I hope to be able to offer you something next week ...

About the frame buffer... It would be interesting if you could post here a **diagram** of your setup: how the sensors are hardwired to your Raspberry (or perhaps other hardware in between), which programs/scripts you call with the exec node, ... And an export of your **flow** of course. Then it is easier for us to know what you are doing, without having to read all the information on the Github page.

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