Utilizing a small pen form factor, this design operates as a hand-held scanner with optical character recognition (OCR). The pen not only captures and stores the characters available for download, but it can also read the words to you via a small built-in speaker. At the heart of this design is the Renesas RL78/G14, an industry-leading lowest power MCU. The MCU interfaces to the image sensor and a micro-SD card as well as controls the volume of the speaker via a digitally controlled potentiometer. Additionally, the pen is powered off of a rechargeable battery, which is charged via the ISL9205 battery charger.
For details on how to build a pen scanner/reader, see the Talking Pen RL78 Quick Solution reference design page.
- Scans with OCR and captures data on a micro-SD card
- Reads captured sentences back via a built-in speaker
- Operates on very low current and enables long battery life
- Small form factor with rechargeable battery via the USB interface
|RL78/G14||Low power consumption, high function general-purpose microcontrollers||RL78/G14 Hardware User's Manual||Select Specific Device|
|ISL9001A||LDO with low supply current, high PSRR||Datasheet||Buy/Sample|
|ISL9205||Li-ion battery charger||Datasheet||Buy/Sample|
|ISL22316||Digitally controlled potentiometer (XDCP) with I2C bus interface||Datasheet||Buy/Sample|
Renesas and IDT’s complementary product portfolios work together to deliver comprehensive solutions to our customers. This is just the beginning, with the combination of the Renesas and IDT development teams, there will more integrated solutions that provide significant advantages over traditional solutions.