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Open-Source Automated Mapping Four-Point Probe
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== Hardware == * Precision positioning system with four point probe on it. In this case a Prusa mendel is modified to hold a Jandel cylindrical four point probe.<ref>http://www.jandel.co.uk/downloads/Jandel_four_point_probe_cylindrical.pdf</ref> A 3D printed probe holder available from<ref name="osf" />is used to fix the probe on the linear rod of the printer. * Measurement circuit board and its printed case, available from.<ref name="osf" /> Firmware for the Teensy on the circuit board is available from<ref name="github" /> * 48 V power supply, used to power the current source of measurement circuit. Any current rating will do since the circuit will draw maximum ~10mA from the power supply. * MicroUSB cable, for connecting the Teensy on the measurement circuit board to the computer. * USB cable to connect precision positioning system to the computer. * Power supply for the precision positioning system.
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