Analog and Digital Electronics devices for Experiments (AandDEE); both HardWare and SoftWare developments on Arduino (C code only) and specific shield (i.e. designed for this project). These should be handy (i.e. easy to use).
matrixIxirtam project consists in both OpenHardWare and OpenSoftWare to check for synchronisation of several cameras. matrix component create a counter number as a matrix, whereas xirtam component reads it from the recorded images.