[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/session.php on line 594: sizeof(): Parameter must be an array or an object that implements Countable
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/session.php on line 650: sizeof(): Parameter must be an array or an object that implements Countable
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/session.php on line 1110: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3903)
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/session.php on line 1110: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3903)
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/session.php on line 1110: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3903)
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 494: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 494: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 494: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 494: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 494: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 494: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 494: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 494: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 494: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 494: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 494: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 494: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 494: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 494: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 494: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 494: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 494: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 494: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 494: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 494: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 494: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 494: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 494: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 494: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 494: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 494: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 113: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 113: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 113: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 5277: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3903)
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 5277: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3903)
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 5277: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3903)
vedder.se forums • VESC DRV8302 Problems MOSFET Swapping Considerations to all! - Page 2
Page 2 of 2

Re: VESC DRV8302 Problems MOSFET Swapping Considerations to all!

Posted: 29 Dec 2017, 09:00
by pf26
Unsoldering the FETs with hot air should be quite easy if you had a hot air station.
I think you better leave the FETs in place and add a thick copper bar to the drain of the 3 top FETs, in order to connect them thermally with your aluminum case (it will connect these electrically too, unless you have an electrically isolating - thermaly conducting- sheet in beween).
I would still prefer soldering a thin copper or brass tube to these 3 FETs, and circulate water/antifreeze to a heat exchanger attached to your casing, using little pumps like used for water cooling CPU. Soldering a thin copper tube would be much easier than using an already precharged CPU cooling system (like ) which constantly sucks heat away and requires huge soldering power.
@TheFallen: do you know if the VESC from Ebay (with all FETs on one side) works well ? The layout seems strange to me with the 3 output wires very near to STM32, and the shunts opposite side of pcb than incoming dc power..

Re: VESC DRV8302 Problems MOSFET Swapping Considerations to all!

Posted: 29 Dec 2017, 21:59
by TheFallen

Re: VESC DRV8302 Problems MOSFET Swapping Considerations to all!

Posted: 31 Dec 2017, 02:39
by Ecyclist

Re: VESC DRV8302 Problems MOSFET Swapping Considerations to all!

Posted: 31 Dec 2017, 08:55
by ThierryGTLTS
Not possible because it's not the same footprint.

And Direct FETs are very difficult to solder.

A very small fan can do the job, or have a look at the VESC 6 done by Stewii here

Have a Nice Day and Happy New Year 2018.

Thierry

Re: VESC DRV8302 Problems MOSFET Swapping Considerations to all!

Posted: 31 Dec 2017, 17:19
by Ecyclist