DIY syringe and peristaltic pumps are all the rage on the internet. Here are some articles about DIY from the point of view of a software/electronics/maker.
Find Great Wholesale Supply Of Syringe Pump
syringe pump price for Hospitals
Programmable Syringe Pumps and Peristaltic Pumps
DIY Syringe Pump (Food 3D Printer - Part 1)
DIY Syringe Pump : 21 Steps - Instructables
Loading A Syringe on Your Pump - SyringePumpPro
SP-12S Pro
SyringePumpPro - New Era Pump Systems - PDF Catalogs
DIY Syringe Pump Assembly - Mechanism Animation 💉
Early revision DIY syringe pump