BioAmp EXG Pill

BioPotential amplification on your finger tip!

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BioAmp EXG Pill is a small (2.54 X 1.00 cm) and elegant Analog Front End (AFE) board for BioPotential signal acquisition that you can use with any 5v Micro Controller Unit (MCU) with an ADC. It is capable of recording publication-quality BioPotential signals like ECG, EMG, EOG, and EEG without the inclusion of any dedicated Hardware/Software filter.

BioAmp EXG Pill github banner

Upside Down Labs BioAmp EXG Pill v0.7 is very small at just 25.40 X 10.00 mm and its well-thought-out design makes it very elegant means it can be used in a variety of ways!

  1. Pin Header Holes allow you to solder header pins (berg strip) to the BioAmp EXG Pill and by doing that you can use it on BreadBoard very easily.
  2. Castellated Holes allow you to solder BioAmp EXG Pill directly onto your custom PCB to add BioPotential amplification capabilities.
  3. Electrode Holes allow you to use any 1.5 mm diameter wire as electrode cable with minimal strain, thus the wire will not break easily.

BioAmp EXG Pill can be used for projects like,

  1. AI-assisted congestive heart failure detection using CNN (ECG).
  2. Heart Rate Variability calculation for heart ailments detection (ECG).
  3. Prosthetic arm (servo) controller (EMG).
  4. Palsy physical therapy quantitative analysis device (EMG).
  5. Real-time game controller (EOG).
  6. Controlling LED with Brain waves (EEG).
  7. Patient monitoring device.

BioAmp EXG Pill uses only one IC called TL074H from Texas Instruments, for the internal workings of our BioAmp take a look at the schematic diagram shown below,


Upside Down Labs BioAmp EXG Pill schematic diagram.

Adobe Portable Document Format - 62.41 kB - 04/14/2021 at 21:41


Gerber files for Upside Down Labs BioAmp EXG Pill v0.7 Upload this directly to to get your own tiny purple EXG pills :)

Zip Archive - 70.20 kB - 04/14/2021 at 21:37


  • 1 × Upside down Labs BioAmp EXG Pill PCB Printed Circuit Board
  • 1 × TL074HIPWR Quad Low-Noise JFET-Input Operational Amplifiers
  • 1 × 47uf 0805 capacitor
  • 5 × 100nf 0603 capacitor
  • 1 × 2.2uf 0603 capacitor

View all 13 components

View all 5 project logs

  • 1
    Order and assemble your own tiny Purple EXG Pill
    Order PCB at OSH Park here and then assemble it according to the image below

View all instructions

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fizak3739 wrote 04/14/2021 at 23:43 point

your efforts at strengthening our culture have not gone unnoticed, "Fantastic work"!

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Deepak Khatri wrote 04/15/2021 at 17:02 point

Thank you very much for your generous support, means a lot to me 💕

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Deepak Khatri wrote 04/14/2021 at 22:40 point

You can contact us for any queries/feedback at

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