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cheers Henrik,
mick.

Hello Henrik,
The first time the mosfets blew was due to my ignorance,
not switching logic on first.

2nd time the 15v supply and powerside were...

Irfan,Kreutz,
Thanks for coming back,here are 3 shots of the damaged board.

hope you can see the burnt track around Q4, I hope to repair
this with...

Hello,
I have just blown the output on my hp-uhu board,after weeks of being
meticulous, switching the logic first and then the power.

i connected both logic and power to the...

Irfan,

i was hoping to upgrade my power supply to around 100 volts before posting a reply but hav'nt managed it yet,

[/LEFT]The only parameters altered from the defaults are H 4000...

Hello from a very happy old man,
Thanks to the guidence and advice from this
forum i've just finished a totally successful test on my first...

Thanks IRFAN,
i did have that problem,but escaped without damage to the
board,the caps just exploded and left a dirty mess.
...

Hello everyone,
just got my board up and running ,after blowing the output.
Before i test with motor power 38v,would it be possible for someone to
post the waveforms that...

Kreutz,
thanks for the reply.
mick.

thanks Jozsi,

Hello to all,
after my partial success with this board i have smoked the
output , luck'ily the board is ok, now i'm back to reading the old posts.

could someone please tell...

Kreutz,
many thanks for pointing me in the right direction,
all i have to do now is find the courage to mess with the board.
...

thanks Irfan,
my problem is getting the rotor to stop, with torque in both
directions.
regards, mick.

hello Henrik,
no it is not completely dead, infact it is possible to get torque in
both directions,but not when the settings have been adjusted to make the
rotor stop after a reset....

Jozsef,
thanks for your reply,

i tried removing the SN75115N and fitting jumpers,but still can't get
the shaft stationary with torque in both directions.

...

hello to all,
just been testing my board with motor and power for the first time,
no smoke yet! but i can't get the motor to stabilise.
when i switch the motor power on, the motor...

rokag3,kreutz,
polarity was correct,
must try 36v now.
thanks for reply, mick.

hello ,
i have just started to test my first UHU HP board, the serial comms are fine i think !!
am able to soft reset ,and input data,
however the tantalum capacitors c19 and...

JOZSI,
thanks for the info.
regards,
mick.

hello, all.
This is my first post on this forum,
i have been trying to order kits of parts for HP UHU as suggested on the
wiki, but have not recieved any reply.
can anyone point me in...