An idea / pointers / risks?

Heiki “Repentinus” Ojasild repentinus at
Sun Sep 14 10:35:13 UTC 2014

On 09/13/2014 02:48 AM, Allan Irving wrote:
> First thing, heat + plastic. Bad idea? Any suggestions as to how to place or manipulate the heat sink and CPU to reduce melting or danger?

"Plastic" is a term far too general. Most Lego blocks are made of ABS¹,
and its properties vary depending on the precise formula employed by the
manufacturer. For an example of common parameters see ². Unless you
intend to ask Lego's ABS supplier for the precise parameters of their
variant of ABS, I would suggest placing the heatsink, CPU, and GPU as
far away as possible from the sides of the enclosure. I would also
suggest placing an additional temperature sensor at the Lego bricks
closest to the heatsink and use it to limit processor speeds if necessary.


Heiki “Repentinus” Ojasild
Fellowship Representative
Free Software Foundation Europe
mailto:repentinus at
xmpp:repentinus at

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