# VOXL heatsink

Source: https://forum.modalai.com/topic/238/voxl-heatsink
Category: Flight Core and Legacy VOXL (https://forum.modalai.com/category/9/flight-core-and-legacy-voxl)
Tags: voxl
Posted: 2021-05-12 07:05:29 UTC by Nikhil Rane
Replies: 6 · Views: 1616

## Nikhil Rane · 2021-05-12 07:05:29 UTC

Hello,

Is there a recommended heatsink for the VOXL computer? We want to operate it in the temperature range -25 Celsius to 55 Celsius.

Thanks,
Nikhil

## Reply by Nikhil Rane · 2021-05-13 05:16:02 UTC

If yes, then can you recommend the part number, else, can you share the step/iges file of the board so we can design it ourselves.

Thanks,
Nikhil

## Reply by Chad Sweet (ModalAI staff) · 2021-05-13 05:45:06 UTC

We don't have a recommended heatsink. The two options we typically use:
1. Use the airflow from the propellers. The drone's airflow is often enough to keep the Snapdragon running at full speed.
2. Use the [VOXL Cooling Fan](https://www.modalai.com/products/voxl-cooling-fan). We have found this to have the best cooling/weight as compared to heatsinks

In general, airflow works better than heatsinks. But, understandably some use cases won't allow for a fan. If that's the case it is desirable to capture some of the airflow from the propellers if possible.

The 3D STEP file can be found at the [datasheet](https://docs.modalai.com/voxl-flight-functional-description/#3d-dimensions)

## Reply by Nikhil Rane · 2021-05-18 05:58:16 UTC (in reply to Chad Sweet)

@Chad-Sweet Thanks

## Reply by dddd · 2021-06-10 21:22:31 UTC (in reply to Chad Sweet)

@Chad-Sweet is there an update to the tested temperature range of the VOXL? The last post I saw from February said it was from 0-55C but did not have full environmental test info.

## Reply by Chad Sweet (ModalAI staff) · 2021-06-10 21:57:21 UTC

We do have a customer who recently tested it was still operational at 85°C ambient

## Reply by Simon Kristiansen · 2022-12-17 17:24:06 UTC (in reply to Chad Sweet)

@Chad-Sweet has anyone tested the negative temp rating. Hoping to see a -20 c.