module was developed as a possible way to "upgrade" any servo drive
currently based on the UHU chip. The UHU-chip is an
excellent servo controller especially so concidering its
price but its limited ability to keep up with the higher
step frequencies required when using high resolution
encoders was the main reason for developing the module.
two photos of the prototype module mounted on my "development
a HP-UHU drive (current production modules are produced
with a black PCB):
For the module to fit on
the HP-UHU a 20-pin DIL socket needs to be used as a "raiser"
or the PCB of the module would interfere with surounding
components, mainly the USB connector. Apart from that it's plug and play.
The maximum encoder count
frequency is 2.5Mhz and the maximum step frequency is
specified to 1Mhz because that's the highest frequency I've been able
to verify i real life. (4000rpm with a 3600 line encoder.)
The price is €30 / pcs
which includes a good quality 20 pin DIL socket with
machined pins to be used as a riser if needed. Shipping
is a flat €10 with tracking and the preferred way of
payment is PayPal. I usually have modules in stock and
can get them on their way within a day or two. They are
all assembled by hand and tested by me personally.
What if it doesn't deliver
what it promises?
In the event that you
should be unhappy with the module for whatever reason
you are free to send it back within 10 days of
reception. You'll then get your money back (excluding
If you would like to
purchase or if you have any questions or suggestions
please don't hesitate to contact me at: henrik [at]
henriksplace [dot] se
Last update: 2012-02-26