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My BS2PX24 cpu heat a lot. — Parallax Forums

My BS2PX24 cpu heat a lot.

AhmedAhmed Posts: 1
edited 2008-10-22 17:15 in BASIC Stamp
hi

I have purchased a BS2PX24 and my problem is the cpu is heating a lot, in my Boe-bot, under the next conditions:

* the supply voltage is the same of the boe bot, with 4 AA bateries
* there are no conections in the I/O pins of the BS2px
* the voltage regulator of the Boe bot is not heating

my question is, is normal that cpu heats? eyes.gif

another observation that i have, the cpu only heats when i write programs with infinite iterations (DO .. LOOP, LABEL:.. GOTO LABEL)

thank you

Comments

  • Mike GreenMike Green Posts: 23,101
    edited 2008-10-22 17:15
    It's normal for the CPU to heat somewhat when it's busy (like executing loops). The amount of current that it uses is proportional to the square of the clock speed (roughly) and the BS2px is one of the fastest Stamps. Most of this current will show up as heat in the CPU. When the CPU stops executing Basic programs (using STOP or END or NAP or SLEEP), it changes to a low power mode. Read the manual's description of these statements for more details.

    There's a comparison on the main Stamp webpage that shows the various features of each of the Stamp models and one of them is the current requirement. Have a look at that.
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