This smart pen system is used to record human handwriting and store a copy in a digital format. The pen uses one IR LED to emit light onto the paper and an LED sensor to detect the reflection. The sensor will allow the movement of the pen’s pattern to be detected and record what is written.

System Benefits​:

  • The LED and detector record’s 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 would transfer the digital data from the pen to a computer or tablet
  • An EEPROM on board will store the writing in memory for transfer to a notebook
  • Buttons for audio recording to start and to power on/off the pen




  • Smart pen

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Template 1 Connector Arrow.436 Connector Arrow.418 US015 US015 US015 Sheet.384 MCU MCU MCU I2C I2C I2C UART UART UART GPIO GPIO GPIO UART UART UART ADC ADC ADC GPIO GPIO GPIO ADC.382 A/D A/D VDD VDD VDD R R R Connector Arrow Connector Line Connector Line.397 Connector Arrow.399 Connector Arrow.400 Connector Arrow.401 3.9mA 3.9mA 3.9mA 3.3V 3.3V 3.3V 2.5mA 2.5mA 2.5mA Sheet.416 Battery 1-Cell Sheet.406 Sheet.407 Line 1pt.1552 Line 1pt.1583 Ground - Signal Sheet.411 Sheet.412 Sheet.413 Sheet.414 Sheet.415 3.6V Battery 3.6V Battery 3.6V Battery Connector Arrow.419 Bi-directional Connector Arrow.421 Connector Arrow.422 Connector 1.160 Bi-directional.424 Bi-directional.425 Bi-directional.426 9mA 9mA 9mA 5V 5V 5V Microphone Sheet.430 Sheet.431 Connector Arrow.432 Microphone.433 Microphone Microphone Connector Arrow.437 Connector Arrow.439 Connector Arrow.440 Connector Arrow.441 BLE BLE BLE EEPROM EEPROM EEPROM Button Button Button LED LED LED LED Sensor LED Sensor LED Sensor Battery Charger Battery Charger Battery Charger Wireless Power Wireless Power Wireless Power Load Switch Load Switch Load Switch USB Connector USB Connector USB Connector USB to UART USB to UART USB to UART LDO LDO LDO
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