The design, bill of materials, operation and assembly instructions are all available at: http://www.appropedia.org/Open-source_syringe_pumpThe details of the syringe pump are in the academic article: Bas Wijnen, Emily J. Hunt, Gerald C. Anzalone, Joshua M. Pearce, Open-source Syringe Pump Library, PLoS ONE 9(9): e107216. Available for free here: https://www.academia.edu/8369549/Open-Source_Syringe_Pump_Library