CuriousInventor made with an arduino, a hand drill and some servos a device to spool solder or what ever you like to, like motor windings etc. The device is accurate thanks to the homemade encoder and can be programmed in terms of speed and number of turns. Not the most usefull project you think but try to remember how many times you needed to do this work by hand. More info can be found here.
Frantisek Durovsky with a lynxmotion A4WD1 v.2 rover as a base and an AL5C robotic arm builded a robot equipped with Xbee wireless control by remote PC, GPS module,main controler ATmega128 and Visual Basic 2008 as control program. The construction is pro-like and so is the operation, you can see in the video the smooth and fine movements.
janjaapschuurman made a wooden robotic arm that has some handmade grippers also from wood, even the gears! The arm works smoothly and the grippers are very nice with little play among gears. Worth mentioning all the parts milled ih his own handmade as it seems mill. For the rest of the details and electronics watch here.
Anders Stengaard Sørensen, Simon Falsig and Rolf Ugilt demonstrate a six-legged robot being controlled from a high-level application written in C#. The low-level motor control is done by a single-chip FPGA system, which holds the drivers for the 18 servo motors, and uTosNet, which is the communication protocol for communica...
Daniele Benedettelli made a low cost robot that can localize and navigate indoor. With LEGO MINDSTORMS NXT as build material the vehicle is a dual differential drive robot equipped with a custom made laser scanner, that measures bearings to reflective targets, whose position is known (map). As you can see in the video the accuracy is very good in both positioning and orientation making it a candidate for further applications. You can watch more info and projects here.
jancernin demonstrates target tracking with openCV libraries a couple of servos and of course a usb cam. The result is excellent and shows the power of opencv. You can watch a video of tracking interface here.