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SparkFun

· MPN: KIT-27922

$261.15 |
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Build and test wireless muscle-sensing projects with this Arduino-compatible electromyography (EMG) kit from the MyoWare 2 ecosystem. It centres on the MyoWa...

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Build and test wireless muscle-sensing projects with this Arduino-compatible electromyography (EMG) kit from the MyoWare 2 ecosystem. It centres on the MyoWare 2 Muscle Sensor, which measures muscle activity from the electric potential at the skin, commonly called surface electromyography or sEMG.

The included MyoWare 2 Wireless Shield receives readings from the muscle sensor and transmits the sensor data wirelessly using the included ESP32-WROOM. It also has a built-in LiPo battery to power the muscle sensor and ESP32 module remotely, plus snap connectors and low-profile pogo pins so it can stack neatly on top of the MyoWare 2 Muscle Sensor without soldering.

Inside the kit are 20 biomedical sensor pads, a mini screwdriver for removing shields, a USB A to C cable for charging the wireless shield or connecting a microcontroller to a computer, a sensor cable for reaching muscle groups away from the sensor, and a MyoWare cable shield.

The redesigned MyoWare 2 sensor outputs a filtered and rectified signal that represents muscle flexion, making it suitable for Arduino-compatible projects, wireless experiments, and MyoWare 2 add-ons such as the LED Shield. Documentation includes hookup guides, the MyoWare Arduino Library, ArduinoBLE reference material, and example code resources.

Features:

  • Arduino-compatible: all-in-one electromyography (EMG) sensor kit for wireless MyoWare 2 projects.
  • Wireless data: MyoWare 2 Wireless Shield receives readings from the MyoWare 2 Muscle Sensor.
  • ESP32-WROOM: wirelessly transmits sensor data with the included ESP32-WROOM.
  • Remote power: built-in LiPo battery powers the muscle sensor and ESP32 module remotely.
  • Stackable connection: snap connectors and low-profile pogo pins allow the shield to stack on top of the MyoWare 2 Muscle Sensor.
  • Simple power control: select a Power Source and flip the power switch to the ON position.
  • Redesigned sensor: easy-to-use, compact design with an upgraded chipset for improved sensor performance and reliability.
  • Surface EMG sensing: measures muscle activity through the electric potential of the muscle.
  • Flexion output: analyses filtered and rectified electrical activity to indicate the degree of muscle flexion.
  • Solderless ecosystem: innovative connector system eliminates the need to solder connections for the MyoWare 2 ecosystem.
  • Expansion options: supports visualising muscles with the MyoWare 2 LED Shield or reading analogue output with an Arduino-compatible development board.

Specifications:

  • Sensor type: electromyography (EMG), also referred to as surface electromyography (sEMG)
  • Wireless module: ESP32-WROOM
  • Battery: Polymer Lithium Ion Battery (40mAh)
  • Sensor output: 0-VIN volts, where VIN represents the voltage of the power source
  • Included sensor pads: 20 biomedical sensor pads
  • Included tool: mini screwdriver for easy removal of shields
  • Included cable: USB A to C cable for recharging the wireless shield or connecting your microcontroller to a computer
  • Included sensor cable: sensor cable for connecting to muscle groups away from the sensor
  • Included shield: Myoware cable shield

Jargon buster

Plain-language definitions for the technical terms used above.

ESP32
ESP32 is a family of low-cost microcontroller chips and modules from Espressif with built-in WiFi and Bluetooth. They support programmable firmware and over-the-air updates, and are commonly programmed with toolchains such as the Arduino core and ESP-IDF.
LED
A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
LiPo
A LiPo (lithium polymer) battery is a rechargeable lithium battery widely used in portable projects because it is light and compact. LiPo cells need correct charging circuitry and careful handling to stay safe, so equipment that supports LiPo generally includes charging or protection hardware suited to that battery type.
microcontroller
A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
Shield
An add-on board that plugs into a main controller board to give it extra features such as sensing, motor control or communication. Knowing a product supports shields helps you judge whether it can connect neatly into an existing maker-board setup.

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