The transmitter section of the wheelchair consists of accelerometer sensor ADXL335 which is interfaced with analog channels of Arduino UNO based on Atmega328 microcontroller, HT-12E Encoder and RF Transmitter. The sensor gives data output when hand is tilted in horizontal or vetical orientation. The microcontroller processes this data and sends commands for robot movements through RF transmitter. The status of different movement is shown on LCD display.
RF Receiver receives command data and gives it to HT-12D Decoder. The data output from decoder is processed using microcontroller and motors are controlled through L293d motor driver. Regulated Power supply is generated using 12V rechargeable battery and 7805 regulator IC.
Hardware Components:
- ATMEGA328 Microcontroller
- RF TX & RF RX Module
- HT12E Encoder
- HT12D Decoder
- 16X2 LCD DISPLAY
- L293 MOTOR DRIVER IC
- GEAR DC MOTORS
- RECHARGEABLE BATTERY 12V
Software:
- ARDUINO IDE
- EMBDDED CPP CODE
- PROTEUS SIMULATOR