Low Cost Flowsensor

UBC_BioMEMS_Product_Video_annotated.mp4

Description

Does the Job! Measures up to 80 uL/min
Cheap! Has a BOM cost < 30CAD
Accurate! 5% Median Accuracy < 55 uL/min, 10-18% Median Accuracy > 55uL/min
Non-invasive! Wet components are standard 1/32' OD tygon tubing and 29G stainless steel
Simple Interface! UART Outputs every 15 seconds

This project is also well documented:

'Flowsensor Product Specification.pdf': Datasheet for the flowsensor
'Flowsensor Requirements, Design & Verification.pdf': A document describing the requirements, design and verification of the flowsensor
'flowsensor_demonstration.MOV': A video showing the benchmarking process
'UBC_BioMEMS_Product_Video.mp4': A video describing the context of the system the flowsensor is originally designed to be a part of.

.
├── data
├── julia
├── lsi_lab_validation
├── pcb_v1
├── README.md
├── reagent_compatibility
└── stm32

'data' contains time series temperature data measured at set flow rates
'julia' contains data science Pluto notebooks used to experiment with the time series temperature data and analyze benchmarking data
'lsi_lab_validation' contains the benchmarking data where we pitted the low cost sensor against the Sensirion SLI-0430 FMK flowsensor
'pcb_v1' contains a KiCAD PCB project of the flowsensor
'reagent_compatibility' contains benchmarking data where we ran different reagents, some at different temperatures, through the flowsensor
'stm32' contains the firmware for the flowsensor

The hardware design is licensed under CERN-OHL-P-2.0. All other components are licensed under Apache-2.0.