Project 4 of 8 Basics

AD8232 leads-off logic

Keep electrodes off the body and test the LO+ and LO- lines by connecting and disconnecting the supplied lead cable as permitted by its documentation. Verify that the firmware reports leads off and suppresses the ECG value instead of showing a misleading trace.

One of 8 projects in the ESP32 ECG & Optical Pulse Learning Kit — the parts below are from that kit.

// How it works

What you build in this project

AD8232 leads-off logic is one focused build from the ESP32 ECG & Optical Pulse Learning Kit. It uses the parts listed below to make a working electronics example, then you can combine it with the other projects in the kit.

Keep electrodes off the body and test the LO+ and LO- lines by connecting and disconnecting the supplied lead cable as permitted by its documentation. Verify that the firmware reports leads off and suppresses the ECG value instead of showing a misleading trace.

Parts used

ESP32U, AD8232, breadboard, jumper wires

What to check

Wire the parts, upload the sketch from the kit page, then test this project by watching the Serial Monitor or the output behavior.

What you learn

You learn how the controller reads real sensor signals, makes a decision in code, and turns that result into a useful output.

// Items used

What this project uses

Every item is in the kit — nothing extra to buy.

ESP32U ESP32U Development Board, WiFi Bluetooth IoT NodeMCU-32 Module, DevKitC with TYPE-C Interface, Development Ki… ESP32U

In the kit

AD8232 AD8232 ECG/EMG Muscle Electrical Sensor Module – Heart Rate & Muscle Signal Monitor Board (Arduino) DIY-012

In the kit

breadboard 830 Tie Point Solderless Breadboard - Full Size Prototyping Circuit Board with Dual Power Rails, for Arduino… DIY-217

In the kit

jumper wires Jumper Wire Assorted Pack 120 Pieces - Male-to-Male, Male-to-Female, Female-to-Female 10cm Ribbon Cables for… DIY-212

In the kit

Build this with

ESP32 ECG & Optical Pulse Learning Kit

All 6 parts in one box, with this project and 7 more to build from them.

AED 101.50 See the kit

Need only these parts? Order them loose · from AED 95.49

Used in this project tick what you still need

ESP32U ESP32U Development Board, WiFi Bluetooth IoT NodeMCU-32 Module, DevKitC with TYPE-C Interface, Development Ki… ESP32U · ×1

AED 33.29

In stock

AD8232 AD8232 ECG/EMG Muscle Electrical Sensor Module – Heart Rate & Muscle Signal Monitor Board (Arduino) DIY-012 · ×1

AED 37.18

In stock

breadboard 830 Tie Point Solderless Breadboard - Full Size Prototyping Circuit Board with Dual Power Rails, for Arduino… DIY-217 · ×1

AED 15.00

Out of stock

jumper wires Jumper Wire Assorted Pack 120 Pieces - Male-to-Male, Male-to-Female, Female-to-Female 10cm Ribbon Cables for… DIY-212 · ×1

AED 25.02

In stock

Selected parts AED 95.49

One of each part. Packs (resistor assortment, jumper wires) already hold more than a single build needs. Delivery is AED 20, free on orders AED 150+.

// Keep going

More from this kit

← Previous · 03Experimental optical pulse interval Next · 05 →Raw ECG Serial Plotter lesson

Basics 01

I2C address and bus inventory

Run the firmware scan command with each module added separately, then together. Confirm the OLED responds at 0x3C or 0x3D and the MAX30102 at 0x57. Record any address or…

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ESP32U DIY-003 OLED MAX30102 breadboard jumper wires

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Basics 02

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Use optical mode to stream raw red and infrared samples. Compare no-finger, lightly placed fingertip, firm pressure, ambient-light, and motion conditions. Treat every nu…

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ESP32U MAX30102 breadboard jumper wires

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Basics 03

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ESP32U MAX30102 optional OLED breadboard jumper wires

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