 | | Re: fried memory
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| it might not be permanently dead, but if it's not, it's not working. one (or more) of the outputs of these two chips is probably shorted to ground or shorted to +5v. the chips get hot when they try to drive this output to a state other than the one (...) (27 years ago, 26-Oct-99, to lugnet.robotics.handyboard)
| | | | | fried memory
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| I suspect that I fried my memory chip. The handyboard downloads Pcode perfectly, but when it tries to synchronize with interactive C, I get an error. While the board is off the 62256-12LP and the 74HC132 chips stay hot. is there a good diagnostic (...) (27 years ago, 26-Oct-99, to lugnet.robotics.handyboard)
| | | | | Expansion Board and Smooth PWM
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| I really need to know how to get all my files correct to run both the expansion board and the smooth PWM routines at the same time. I downloaded both zip files but am unsure which files to use. Did I miss something on the web page where it says how (...) (27 years ago, 26-Oct-99, to lugnet.robotics.handyboard)
| | | | | Re: MOTOR DRIVERS
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| (...) Hi Paul, I don't know how the handyboard is protected against overload but one thing is for sure : if you overload the driver chip ... this one will fry up.In worst case you'll fry the board as well. If a driver chip's maximum current is 1 (...) (27 years ago, 25-Oct-99, to lugnet.robotics.handyboard)
| | | | | Re: MOTOR DRIVERS
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| It won't necessarily fry the chip. L293s (and the TI equivalent) have a thermal protection mode. If the chip gets too hot, it will turn itself off. Most of the time, this protects the chip against over-current. However, it is still possible to fry (...) (27 years ago, 25-Oct-99, to lugnet.robotics.handyboard)
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