This is my first time drawing a board. Can you guys help me find out what the problem is?

头很铁

This is my first time drawing a board. Can you guys help me find out what the problem is? [Copy link]

 

Mainly the selection of capacitors and resistors and how the PCB is routed

qwqwqw2088

Not bad

Was the board area determined to be this large from the beginning?

In fact, it can be more compact

Often the difficulty of drawing a circuit board is to make the wiring compact within a limited area.

lcofjp

Can I ask what software did you use to draw this?

吾妻思萌

Is the speed on the right a button? Then you can turn it out. Don’t get too close to the components inside, or you may get electrocuted, hahaha.

吾妻思萌

In addition, it is not good to open vias under components. It is also not good to open vias close to pins. You will be scolded by the master.

吾妻思萌

The capacitors in the middle are better arranged horizontally and vertically. If there is enough space, some test pads can be reserved.

wangerxian

Is the motor power also provided by the board? What kind of motor is it?

头很铁

wangerxian posted on 2023-7-26 11:33 Is the motor power also provided by the board? What kind of motor is it?

It is just a signal line to the motor driver, and there is no heavy load. The load is basically on the RGB light.

头很铁

Azuma Simeng posted on 2023-7-26 11:32 In fact, it is better to arrange the capacitors horizontally and vertically in the middle. If there is enough space, you can reserve some test pads

Thanks for your reply. Where are the test points usually added? Is there any particular reason for arranging capacitors? Or is it just for aesthetics?

头很铁

Azuma Simeng posted on 2023-7-26 11:31 In addition, it is not good to open vias under components. It is also not good to open them close to the pins. You will be scolded by the master

Hahahaha, this is indeed going to be changed soon

头很铁

qwqwqw2088 posted on 2023-7-26 11:19 Not bad, the board area was determined to be this large from the beginning, but it can be more compact. It is often difficult to draw a circuit board within a limited area...

There is no limit to the size at the moment. If it is compact, I will have to wait until I spend a few more boards to get familiar with it.

头很铁

Azuma Simeng posted on 2023-7-26 11:30 Is the speed on the right a button? Then you can turn it out. Don't get too close to the components inside, or you'll get electrocuted.

It is something similar to the speed control handle of an electric car.

头很铁

lcofjp posted on 2023-7-26 11:25 May I ask what software did you use to draw this?

Hahahaha I'm not a big shot, I used the one drawn by LiChuang EDA

头很铁

wangerxian posted on 2023-7-26 11:33 Is the motor power also provided by the board? What kind of motor is it?

No, the motor is powered by the driver board, and only the drive signal is led out.

damiaa

The drawing is pretty good. But it's expensive to use LM2596. Also, the vias on the side of ESP32 are too close to the pads. It will be troublesome if the vias are removed by soldering twice.

wangerxian

头很铁发表于2023-7-26 11:41 It is just the signal line leading to the motor drive, and there is no large load. The load is basically on the RGB light

It's OK without a big load. Draw the circuit board a few more times to know where the shortcomings are.

dlb123

Vin uses a 470μF electrolytic capacitor. You can consider doing some fool-proofing or adding an anti-reverse diode. There may be risks if the wires are connected in reverse.

秦天qintian0303

Azuma Simeng posted on 2023-7-26 11:30 Is the speed on the right a button? Then you can turn it out. Don't get too close to the components inside, or you'll get electrocuted.

The system with the highest voltage of 12V should not cause electric shock.

吾妻思萌

Azuma Simeng posted on 2023-7-26 11:30 Is the speed button on the right? Then you can turn it out. Don't get too close to the components inside, or you will get electrocuted.

It's something like the speed control handle of an electric car

Whenever you interact with the user, you have to stay on the edge, otherwise it will be difficult to press and operate.

秦天qintian0303

The VUSB line is thinner than the +5V line. Pay attention to the size relationship of the power wiring.