Get Arduino Uno Board Circuit Diagram Pictures. I advise you to download atmega328 block diagram. Open device manager and observe the com port of the usb to ttl converter.

Schematic Diagram Of Arduino Uno Board Connected With Hc Sr04 And Lm35 Download Scientific Diagram
Schematic Diagram Of Arduino Uno Board Connected With Hc Sr04 And Lm35 Download Scientific Diagram from www.researchgate.net
As shown in the diagram above (via the red traces), the pins related to the arduino board uses a buffer (the lmv358) to drive the led. I redistributed the original arduino uno schematic to be more readable below. Please provide the detailed diagram of frame.

After circuit design is complete, convert the circuit to pcb and design the pcb in easyeda website.

Connect the breakout board to the arduino and connect that to the computer. Open device manager and observe the com port of the usb to ttl converter. Connect the breakout board to the arduino and connect that to the computer. As shown in the diagram above (via the red traces), the pins related to the arduino board uses a buffer (the lmv358) to drive the led.