Hi,
I'm working on a project with basically a home built breadboard Arduino using an Atmega328p. I've been powering the microcontroller from USB (using a FT232R USB serial breakout board) but am to the point now where I need more current than USB can offer. However, I still need to use the USB port to monitor results on a serial terminal coming from the microcontroller on my computer at the same time and occasionally reprogram.
So when I power the microcontroller with a separate 5v power supply to gain higher current capacity, how do I go about simultaneously connecting it to USB without doing damage? Can the grounds be tied so that the separate 5v voltages are referenced the same?
As of now without a separate supply, I'm using the connections VCC, GND, TX, RX, and DTR on my FT232R breakout board.
Thanks
I'm working on a project with basically a home built breadboard Arduino using an Atmega328p. I've been powering the microcontroller from USB (using a FT232R USB serial breakout board) but am to the point now where I need more current than USB can offer. However, I still need to use the USB port to monitor results on a serial terminal coming from the microcontroller on my computer at the same time and occasionally reprogram.
So when I power the microcontroller with a separate 5v power supply to gain higher current capacity, how do I go about simultaneously connecting it to USB without doing damage? Can the grounds be tied so that the separate 5v voltages are referenced the same?
As of now without a separate supply, I'm using the connections VCC, GND, TX, RX, and DTR on my FT232R breakout board.
Thanks