Results from course “Embedded Systems”
Single project 12/17
CamRead offers the possibility to stream print media and documents to any output device in enlarged form. The camera position can be changed via a joystick.
It consists of two components: the frame and the joystick.
The two systems (joystick and camera shift) are each controlled by an ESP32 microcontroller. These are used as both are already equipped with Bluetooth by the manufacturer.
Bluetooth Low Energy (BLE) is used for communication between the systems, as the amount of data required is very small. In addition, BLE consumes significantly less power than the classic Bluetooth.
The communication system works as follows: An ESP sends the corrected input signals of the joystick. The receiving ESP then adjusts the direction of movement of the stepper motors, which control the camera position by means of toothed belts.
The camera is connected to an output device (computer or smart device) via a micro-USB cable or optionally via WIFI and transmits the text to be displayed on the device in scaled form. Thus CamRead is able to guarantee a user-adapted and dynamic presentation.
More details about the project can be found in the wiki of the HRW FabLab:
“Embedded Systems” was developed as part of the Emscher-Lippe-hoch-4 project.
On the project website of Emscher-Lippe-hoch-4 you will find more detailed information about the project as well as an overview of all results from “Embedded Systems”: