André Guignard
Prototypes of an improved Engelbart mouse with an optical encoder were built at LAMI-EPFL in 1972, see EPFL mouse story but there was no need for a mouse when graphic screens were not available. The LAMI-EPFL developed several microprocessor driven graphic screens since 1974 and André Guignard designed in 1977 a reliable mechanism for measuring the ball movement with optical encoders. This was the first modern computer mouse using an optical encoder. A student project for a 5 cm diameter robot was redesigned in 1993 by André Guignard, 
Francesco Mondada and Edo. Franzi. After the first prototypes, the construction of this powerful small robot named Khepera from the scarab-looking Egyptian god Khepra was subcontracted to Forelec until K-Team SA foundation in 1996. The Khepera was sold to a thousand of research labs and hold the cover of Nature in its issue of August 31st, 2000, linked with the article of Michael J. B. Krieger, Jean-Bernard Billeter and Laurent Keller. The Robota research objective of Prof Aude Billard is to engage in complex interaction with humans. In 1999, Prof Aude Billard was in need of a doll with moving legs and head. André Guignard built the mechanics, and added in 2005 moving eyes with a camera inside in the 8 cm diameter head. He helped students to build multi-degrees of liberty arms and necks. The swarm-bots project was in need of a number of simpler, insect-like, robots (s-bots), built out of relatively cheap components, capable of self-assembling and self-organising to adapt to their environment. André Guignard interacted with Francesco Mondada and the other partners of the project and built 35 mechanically complex 15 cm in diameter s-bot robots that can grip each other to pass over an obstacle. The s-bot was ranked on position 39 in the list of “The 50 Best Robots Ever” (fiction or real) by the Wired magazine in 2006. Jean-Christophe Zufferey PhD thesis was on bio-inspired autonomous flying. The 2006 smaller plane of the microflyer project flies in a 7x7m space. Based on the 5g microCeline of Didel, the 5 grams payload includes two linear cameras compacted by André Guignard and a tricky propeller gearbox in the middle of the fuselage, so the camera is in front. The propeller on top is a 0.2g anemometer measuring wind speed down to 0.1 m/s. Prof. Auke Ijspeert is concerned about the neural mechanisms of movement control in vertebrates. André Guignard developed and built for him all the mechanics of the AmphiBot snake robots, as well as those of the Salamandra robotica salamander robot. One of the major difficulties building these amphibious robots was indeed their waterproofing.
Robots
He is the creator of the mechanic of the Khepera, the S-bot and several other mobile robots. His interaction with students was always greatly appreciated.