Oatley kits

The Oatley mosfet kits are bipolar with full step only. They give you
as much information with the kit as what is in on their website.
There is absolutely no product description. They don't even tell
whether it is bipolar. They just assume that you can figure it all
out. The units do work however, and there are 4 different IC chips
and 8 mosfets and they use led's in the circuit. The really bright
side to all this is the price(the Aussie dollar is way down). The
other downside is that took almost exactly 1 month to get them. Now
that probably was not their fault as they shipped economy air.You can
only fly an aircraft so slow. My guess is that they sat in U.S.
Customs for 2-3 weeks. I am trying to figure out how to convert them
to chopper drives using a L297 chip. If you are going to use the
higher current capabilities,heat sinks are a must. Heat sinks with a
fan-even better. I had one of my heat sinks get in contact with the
chassis of my power supply and it got one of the mosfets hot enough
to
unsolder itself before I caught on to what was happening. It lived
through it. I just stood the mosfet back up while the solder was
still
hot and did a lot of blowing to try and cool things down.
The mosfets are IRFZ44 and MTP2955 with 4 BC548 transistor also.
Anyone familiar with those numbers?
The PCB is 3 3/8" by 4 13/16". It has a voltage regulator if you want
to use it(single power supply) or you can put in a jumper and run a
separate 5V supply , allowing a higher voltage for the motors. The
regulator is limited to a max of 35V. The other IC chips are
40106,4030,4013,and4093.
Anything else?