(Verified) Arduino NANO V3

I believe everyone likes Type-C, as mentioned it is here!

describe:

1. The interface is changed to Type-C.

2. Add a diode to prevent reverse connection.

3.AMS1117-5,0 is used to stabilize the entire circuit. (The pressure drop is a bit large)

4. The serial port uses CH340N (with its own crystal oscillator, equivalent to a reduced version of CH340C)

5. Power supply, RX, TX, D13 lights are all satisfied.

6. The ICSP is removed to facilitate programming, and pins are used for ICSP programming.

7. A 3.3v LOD voltage regulator chip has been added, and there are a total of 3 3.3v/5v interfaces on the periphery to facilitate the connection of more sensors.

8. All pins are lead out for subsequent use.

insufficient:

AMS11175.0 has a relatively large voltage drop, and the 5v output is less than 5v. You can use a Zener diode (you need to change it yourself)

Hole filling area

1. A 100nF must be added to the reset circuit and connected to RESET, otherwise the upload will not be successful! ! ! !

2. In actual testing, some solutions use CH340C. There is no difference between DTR and RTS. Moreover, CH340C has many interfaces, which creates waste and takes up space.

Therefore, this project uses CH340N, which can be programmed happily and takes up a small area. Why not?

Tips for newbies:

If you use the CH430C solution and the power supply is 5V, you need to connect the V3 pin to ground!

For a 3.3V power supply solution, connect V3 to VCC (3.3V).

3. To use Type-C perfectly, the computer must recognize the C To C protocol, so two 5.1K resistors are essential! !

Finished product picture:

                                  front

                                  reverse side

The power pins on the back refer to the works of other big guys on the open source platform.

Distinguish the power supply so that it is more intuitive to connect the load later.

Comparison chart between domestic version and CCNANO

The silk screen is placed outside, it is a circle bigger