Wiring guide needed: EMG Muscle Sensor with Electrodes (CE10273) — split power supply + Arduino Uno

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Hi, I’m using the EMG Muscle Sensor with Electrodes (CE10273) for a school science experiment measuring muscle activity with an Arduino Uno. The product page notes a split supply is required (positive and negative), and that the pad connection wires are sensitive to noise. Could someone help with: 1. A wiring diagram or schematic showing how to connect a split power supply (e.g. two 9V batteries in series) to this sensor, and how the sensor then connects to the Arduino’s analog input pin. 2. Which pins on the board are the positive/negative supply, and whether incorrect wiring risks damaging the sensor or Arduino. 3. A recommended USB isolator (or other noise-reduction method) that works with this sensor and an Arduino Uno, and roughly what that would add to cost. 4. Any datasheet or hookup guide for this specific board (CE10273) covering the full wiring from batteries → sensor → Arduino. I already have an Arduino Uno and I’m working with a limited budget, so I want to wire it correctly the first time. Any diagrams, guides, or part suggestions would be really appreciated! Thanks!

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Hey there, @Aarav327306, welcome to the forum. Glad to have you here.

Lots of questions here but we’re happy to answer them:

  1. Wiring:
Battery 1 +  → Sensor Vs+
Battery 1 -  → Common GND ← Battery 2 +
Battery 2 -  → Sensor Vs-

Sensor GND   → Arduino GND
Signal-out   → Arduino A0
  1. Pins: Use the board labels Vs+, GND, Vs- and signal output—don’t rely on physical pin order:

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Be careful because a reversed supply polarity may destroy the sensor, while connecting Vs- to the Arduino could also damage the Uno.

Noise: Keep electrode leads short and away from mains wiring and switch-mode supplies. The recommended USB isolator adds roughly the low-$20s; check the page for current pricing. As its detailed USB ratings aren’t published, I can’t guarantee every Uno setup. Battery operation with USB disconnected is the safest, quietest approach while electrodes are attached.

Guide: The CE10273 hookup guide includes the split-supply diagram, electrode placement and example code for the Raspberry Pi Pico. You will need to modify it for the Arduino Uno, however.