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Search: Posts Made By: teraamper
Forum: Open ReVolt: open source DC motor controller 03-14-2012, 01:36 PM
Replies: 7,381
Views: 2,402,711
Posted By MPaulHolmes
If the DC-DC fails, the voltage would take a...

If the DC-DC fails, the voltage would take a finite time to fall. During the time it goes from 9v down to 0v, the mosfet driver would be off. So, the mosfets would be off.

Now, let's say we...
Forum: Open ReVolt: open source DC motor controller 04-26-2011, 03:49 PM
Replies: 7,381
Views: 2,402,711
Posted By jackbauer
Anyone interested in an igbt power stage should...

Anyone interested in an igbt power stage should read this document:
http://www.evbmw.com/igbt.pdf
Forum: Open ReVolt: open source DC motor controller 04-22-2011, 12:22 PM
Replies: 7,381
Views: 2,402,711
Posted By jackbauer
The micro expects a 2.5v v ref signal if no...

The micro expects a 2.5v v ref signal if no current is flowing. You can simulate this with two 1k resistors across the 5v line with the center tap going to the vref input.

In other news I have...
Forum: Open ReVolt: open source DC motor controller 04-20-2011, 01:39 AM
Replies: 7,381
Views: 2,402,711
Posted By mora
Ponyprog has a button called "Security bits". It...

Ponyprog has a button called "Security bits". It doesn't talk about fuses. You also might need some understanding in binary and hexadecimal systems.

This link explains a bit (fuses and bits,...
Forum: Open ReVolt: open source DC motor controller 04-16-2011, 02:38 PM
Replies: 7,381
Views: 2,402,711
Posted By MPaulHolmes
I'm not sure what software version you have, but...

I'm not sure what software version you have, but 1.11b or later won't fit on the atmega8 I believe. You need the atmega168. And in ponyprog, the fuse bits shoud be:
extended high low = 08 dc f7,...
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