Biomedical · Tissue Engineering & Biomaterials
Wearable Drug-Delivery Patch Prototype (Iontophoresis)
Build a low-voltage iontophoresis patch that uses controlled current to drive a dye through a gel membrane (drug-delivery model). Measure delivery rate vs current. Strong biomedical-device portfolio piece. NOTE: Educational project only. NOT a medical device and not for clinical or diagnostic use.
Major
Biomedical
Focus area
Tissue Engineering & Biomaterials
Total hours
35-50 hours
What you'll need
- Arduino Uno R3 ATmega328P microcontroller board
- INA219 DC current voltage power monitor sensor module
- 10K ohm rotary potentiometer for Arduino
- sodium alginate powder food grade
- ECG electrodes pads pack
- breadboard jumper wires male female assortment pack
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Steps
- Make gel membranes from sodium alginate and load them with a colored dye.
- Build a low-current circuit with the Arduino, potentiometer, and INA219 to control current.
- Attach electrode pads to the gel and run a small, controlled current through it.
- Measure how far the dye travels over time at several current levels.
- Plot delivery rate vs. current and look for a relationship.
- Document the setup and results for your portfolio.
What to photograph for your portfolio
- Patch prototype
- delivery-rate vs current plots
- gel membrane setup
- current control logs
- device photos
Resume bullet starters
Copy one, then swap in your own numbers.
Designed and built a wearable drug-delivery patch prototype using Biomedical device design, controlled current sourcing, electrochemistry basics
Applied Arduino and measurement to implement, test, and validate the system end-to-end