Author Archives: Kar-Wing Lau


Intel’s Xeon Phi Heat Transfer Dilemma

We’ve been spending all of last year around FPGA devices, but lately we spent a bit of time with Intel’s Xeon Phi coprocessor. What took 9,298 CPUs and occupied 72 server racks in 1997 now fits on a tiny little chip the size of an iPod Nano. Intel showing off Xeon Phi aka Knights Corner This new chip,… Read More



Heating the office with FPGAs and servers

If you look around a typical Hong Kong office during the winter season you’ll often find people in down-feather jackets sitting around old-style (and energy hungry) blow heaters and electrical oil radiators (2000W units are very popular in HK). This winter however, our office was nice and cosy and T-shirts were the norm. With 70kW… Read More



Talk to AB PowerFlex AC Drives from Linux or Windows

Instead of using a proprietary PLC controller (such as the AB Micrologix), there is an alternative and much easier way to talk to your Allen-Bradley PowerFlex AC drives. Rockwell Automation offers a number of interface modules, but it’s easy to get confused (20-COMM-E works with 700 but not with the 400 family) and they are… Read More