Electrode Patch – Adhesive ECG Electrode for Biomedical Projects
ECG Electrode Patch – Ag/AgCl Adhesive Pads
This adhesive ECG electrode patch features Ag/AgCl conductive gel for reliable bio-signal acquisition, suitable for heart rate monitoring and biomedical projects with Arduino, ESP32, and Raspberry Pi.
Key Specifications
| Electrode Type | Ag/AgCl (Silver / Silver Chloride) |
| Diameter | 24 mm (typical) |
| Adhesive | Medical-grade acrylic |
| Gel Type | Solid hydrogel, conductive |
| Cable Connector | Snap button (3.5 mm) |
| Pack Size | 10 patches per pack |
| Shelf Life | 18 months (unopened) |
| Intended Use | Single-use, disposable |
What You Can Build With This
- Simple Heart Rate Monitor: Build a beginner Arduino project that detects heartbeats using an AD8232 module and displays BPM on an LCD.
- Wireless ECG on ESP32: Transmit real-time ECG waveforms to Blynk or a web dashboard via Wi‑Fi for remote health monitoring.
- Raspberry Pi Bio‑Logger: Log ECG data to a CSV file and plot signals using Python and an external ADC (MCP3008) for offline analysis.
- Bio‑Potential Measurement (CBSE Practical): Demonstrate skin electrode recording in a 12th‑grade biology/electronics experiment or ATL Tinkering Lab.
- Smart Health Monitoring System: Integrate ECG, SpO₂, and temperature sensors for an IoT‑based patient tracking project (B.Tech final‑year or Smart India Hackathon).
Compatibility
| Platform | Compatible | Connection | Library / Method |
|---|---|---|---|
| Arduino Uno R3 | Yes with AD8232 | Analog pin A0 (via AD8232) | SparkFun AD8232 library |
| Arduino Nano | Yes with AD8232 | Analog pin A0 (via AD8232) | SparkFun AD8232 library |
| Arduino Mega 2560 | Yes with AD8232 | Analog pin A0 (via AD8232) | SparkFun AD8232 library |
| ESP8266 NodeMCU | Yes with AD8232 | Analog pin A0 (max 1 V input; use 3.3 V version) | AD8232 library + ESP8266WiFi |
| ESP32 Dev Board | Yes with AD8232 | ADC1 channel 0 (GPIO36) | AD8232 library, built‑in ADC |
| Raspberry Pi Pico | Yes with AD8232 | ADC0 (GP26) | MicroPython ADC or Arduino‑Pico core |
| Raspberry Pi 4 / 5 | Yes with external ADC | MCP3008 via SPI (GPIO pins) | Adafruit MCP3008, Python |
Wiring and Interface Notes
Connect the electrode’s snap to the input of an AD8232 single‑lead heart‑rate monitor; the module’s output goes to an analog pin of your microcontroller. Operate the AD8232 at 3.3 V or 5 V depending on your board, ensuring the output voltage does not exceed the ADC maximum. For clean signals, prepare the skin with an alcohol wipe and press the patch firmly—avoid movement during measurement.
Frequently Asked Questions
Do these electrodes require conductive gel?
No, each patch comes with pre‑applied Ag/AgCl hydrogel, so you can use them straight out of the package.
Can these electrodes be reused?
These are single‑use, disposable electrodes; reusing them often leads to poor adhesion and degraded signal quality.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items