In this project, the path is already clarified that we gonna use this this technique to get required output. This project is compoosed of microcontroller (PIC18F4520), 3 button(up, down, select) OLED (SSD1306), Transformer (12V to 110-220V), digital potentiometer, amplifier and speaker. Their is two output: 1. It is speaker using digital potentiometer to control volume of speker. The mobile is connected to speaker and it amplify the volume. The volume controller can be control by up down select button which can be shown on OLED display in the bar form. 2. In second part, their is inverter where we are generating sine wave from the micorocntroller and then we are stepping the sine wave generating from the microcontroller to the 110 - 220 V from transformer at 250mA. Also, there is alarm feature too. Please look the document too for detail information.
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yes buddy,,its me imad, have done a lot of projects with arduino,,,,especially with ssd1306 lcd,,,,,u will get the best work accompanied with brotherhood,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Embedded development team in Bangalore with highly efficient coders........ Let's do this project, as our all developers are available as the seasonal works are going on.......
I have my project on pic controller with sine wave inverter that supplies 220v to the load from the secondary side of the transformer. It would be an easy task to implement it again wth speaker.
I have interested to work on your problem. Relevant Skills and Experience I have been working on embedded field since 2years and i have good knowledge about micro controller problems.