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Thanks! For this machine i'm using an 'ODrive' motor controller which drives the brushless DC motors and uses encoders for closed loop feedback. It's quite straightforward to program using Python and i'd definitely recommend them. If you are using stepper motors for drive, in the past I have used an arduino flashed with 'Grbl' firmware with good results. it looks after all the motion control and you simply sent it G-Code commands via uart from another controller - similar to how 3D Printers operate.

Hi Abid - For this project we are using a small 12v diaphragm pump along with a solenoid valve to help quickly shut off the water flow. Depending on the application, a peristaltic pump could also be used.

Hi Zafer, The goal of this design was to perform simpler liquid dispensing operations, rather than full liquid handling where aliquots of sample need to be transferred from one vial to another - The ideal use case for this design would typically be a lab workflow that involves dispensing reagents from a bottle top or stepper dispenser into tray/rack of containers - which becomes frustrating and time consuming to do manually when lots of samples are involved. The design is meant to be fast and easy to use with a a small footprint so it easily fits inside a fume hood etc. Off the shelf units like this are typically designed around a 96 well plate format, which doesn't suit our method requirements. It uses a built in diaphragm pump, solenoid valves and and ultrasonic level sensor to accurately dispense the reagent into the vial. Thanks! Richard

@@richardc3205 Thanks ! We as a research team were inspired a lot from your previous video. !