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Smart Pen

Overview

Description

This smart pen system records human handwriting and stores a copy in a digital format. The pen uses one infrared light-emitting diode (IR LED) to emit light onto the paper and an LED sensor to detect the reflection. The sensor allows the movement of the pen’s pattern to be detected and recorded. This innovative design addresses the growing demand for efficient digital note-taking, bridging the gap between traditional writing and digital convenience.

System Benefits​:

  • The LED and detector record the pen's movement.
  • The IR LED is invisible, so the user will not be distracted by any light while writing.
  • Bluetooth® Low Energy (LE) on the pen transfers the digital data from the pen to a computer or tablet.
  • An onboard EEPROM stores the writing in memory for transfer to a notebook.
  • Buttons for audio recording allow to start and to power on/off the pen.

Comparison

Applications

Block Diagram

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Template 1Connector Arrow.436Connector Arrow.418US015US015US015RRRConnector ArrowConnector LineConnector Line.397Connector Arrow.399Connector Arrow.400Connector Arrow.4013.9mA3.9mA3.9mA3.3V3.3V3.3V2.5mA2.5mA2.5mASheet.416Battery 1-CellSheet.406Sheet.407Line 1pt.1552Line 1pt.1583Ground - SignalSheet.411Sheet.412Sheet.413Sheet.414Sheet.4153.6V Battery3.6V Battery3.6V BatteryConnector Arrow.419Bi-directionalConnector Arrow.421Connector Arrow.422Connector 1.160Bi-directional.424Bi-directional.425Bi-directional.4269mA9mA9mA5V5V5VMicrophoneSheet.430Sheet.431Connector Arrow.432Microphone.433MicrophoneMicrophoneConnector Arrow.437Connector Arrow.439Connector Arrow.440Connector Arrow.441Bluetooth LEBluetooth LEBluetooth LEEEPROMEEPROMEEPROMButtonButtonButtonLEDLEDLEDLED SensorLED SensorLED SensorBattery ChargerBattery ChargerBattery ChargerWireless PowerWireless PowerWireless PowerLoad SwitchLoad SwitchLoad SwitchUSB ConnectorUSB ConnectorUSB ConnectorUSB to UARTUSB to UARTUSB to UARTLDOLDOLDOConnector 1.160.450Connector 1.160.451Connector 1.160.452Sheet.453MCUMCUMCU UARTUARTUARTUARTUARTUARTGPIOGPIOGPIOGPIOGPIOGPIOADCADCADCA/DA/DA/DI2CI2CI2CVDDVDDVDDConnector 1.160.454Connector 1.160.455Connector 1.160.456
Exiting Interactive Block Diagram

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