How can I power a High Torque Servo with WeMos?

Projects Discussion and Showcase Product Design
1

I'm currently building a project using WeMos D1 Mini. It says on specifications that the output current is maxed at 500mA and it has a 5V input.
The project is to control a High Torque servo that needs 4.8v ~ 6v and 4.8v/750mA 6.0v/950mA.

1 - How can I do this?
2 - A WeMos Motor Shield can solve the powering?
3 - What Power Supply should I use for the project?

2

Control is not POWERING. You need a proper power supply for the servo, only. That should supply 2 to 3 times the listed running mA for the servo.

2 Likes
3

And don't forget to connect the external power supply ground to Arduino ground as well as each servo ground.

1 Like
4

Inplace of a guessing game I am asking for links to technical information on the hardware devices. Sales information such as posted on azon is useless. As far as control is it on/off, forward/reverse torque/variable, Speed fixed/variable etc.

5

Ok. Now I'm starting to get how this works, thank you for your patience! haha.

But I have another question:

Will I need a voltage regulator or a capacitor on the circuit?

6

Post a schematic of the circuit, please. What voltage(s) is(are) required? Where would you put a capacitor?

1 Like
7

I don't have the circuit schematic. In fact that's why I'm asking for help. I'm planning everything up before I order the stuff.

To run the D1 Mini, I need 5V or 3.3V. Considering the fact that I will use it paired with a Servo, I'll probably use the 5V input.
The servo works with 4.8V ~ 6V and 4.8v/750mA 6.0v/950mA.

I'm concerned if I'll need any kind of circuit protection for not melting the D1 mini board.
The Capacitor is going paralel to the servo for stability.

Itens I'm planning to buy:
WeMos D1 Mini: LOLIN D1 mini — WEMOS documentation
Servo JX PDI-6221MG - 4.8V ~ 6V and 4.8v/750mA 6.0v/950mA.
And a Power Source 5V 2A

PS: sorry, wrong link for servo

8

Why? Do you have stability problems? What does that mean? Do you have power supply problems? Capacitor won't help that as the servo is a pretty steady current draw.

9

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.