As can be seen in Figure , the dispensomixer design is based on eight dispensing heads are arranged around a circular base that holds all the electronics. The pellet material can be stored in the transparent tubes shown in the image. The dispensed pellets fall into a hole in the center of the device and are to be collected in a funnel installed in the dispenser stand. To provide customization to the kind of material dispensed, several rotor design are included, so user can select the most adequate one to their pellet size and shape, and to the flow of material required. During the design stage, it became apparent that pellet size and shape affects crucially the dispensing process. In our particular application we mainly dealt with two types of pellets, shown in Figure : the commercially available ones, e.g. raw materials, were bigger, with the spheroidal shape of 3-5 mm diameter, while the ones that were extruded and cut in our laboratory were smaller and with a cylindrical shape of around 2-3 mm height, 2-3 mm diameter. To deal with different sizes, the different rotor models provided have different sized holes (5, 7 and 10 mm diameter), and are fast to print and easily exchangeable between experiments, so at any point the models used can be arranged to match the pellet size in each dispenser. The different sizes also allow control over the dispensing speed, as larger holes will mean more material flow but also lower precision, so they should be chosen to balance both. They can be easily exchanged to fit the material that we need to dispense from that particular dispenser head.