Motorcar

Hallo,
Mijn plan is om een robot vrachtauto te maken met een Maestro 12 .
1DC motor voor de aandrijving, vooruit en achteruit.
1 Servo voor het stuur links rechts.
1 Servo om de laadbak te legen.

Is dat mogelijk?
Zo ja wat heb ik hier verder voor nodig.

Bert

Hello, Bert.

Unfortunately, we can only offer support in English. However, I used an online translator and it sounds like you’re asking about controlling 1 DC motor and 2 servos from a Maestro. Controlling the servos directly should not be a problem as long as they accept a standard hobby RC servo signal. The Maestro cannot directly control a brushed DC motor, but channel 8 on the 12-channel Mini Maestro can be configured as a duty-cycle based PWM signal. So, if you use a motor driver that has a PWM/DIR interface, you could use channel 8 in combination with another pin to control it. You can find more information about the Mini Maestro’s PWM output in the “Status and Real-time Control” section of the Maestro user’s guide.

Brandon

Dank je,

Hello,
I have a 12 channel and a 24 channel mini maestro.
I want to build a truck with it.
This needs 1 continuous rotation servo to make the truck move forward and backward.
And 1 servo for left and right.
And 1 servo to make the loading platform go up and down.
Is that possible with one of the two mini maestros?

greetings Bert

The 12-channel Maestro can independently control up to 12 servos and the 24-channel Maestro can independently control up to 24 servos.

From your description, it sounds like you’re only talking about controlling 4 servos, so you should only need to use one of your Maestro controllers and either of them would work.

Brandon

Hello Brandon,
So, can I use a continuous rotation servo with the Maestro Control Centermini to make the truck drive backwards and forwards over a certain distance? If so, how can I set that up?

Greetings Bert

Continuous rotation servos accept the same signals as standard servos, but map the pulse width to a speed instead of a position. So, you should not need to do anything special with the Maestro Control Center to configure them.

However, given that they do not have any feedback for their position or speed, making it go a specific distance might be difficult depending on how accurate you want it to be. Generally, the only way to do that without adding some kind of additional feedback would be to use some fixed delays between movements (e.g. move forward for 5 seconds then stop).

Brandon

Thans,
Its clear now .
Bert

HI brandon,

Thank you for your response.
My plan is to make a truck.
I want to use the continuous rotation servo to make the teruck move forward and backward.
This moves forward or backward over a certain distance.(about 5 sec)

I use the other servos for the truck:
to turn left or right.
to raise or lower the loading platform.
Can you help me with the program in maestro?
Greetings Bert

Hello.

In case you did not see it already, I recommend you start by carefully reviewing the information in the Maestro user’s guide, which has a lot of information about how you can program it including several example scripts. Also, looking through other threads on this forum related to programming the Maestro can be an excellent resource.

However, if you have trouble with programing the specific behavior you want in the Maestro, we would be happy to try and help you. Please post the simplest complete program that demonstrates the particular problem you are having, a clear description of what you expect it to do, and what it actually does instead.

- Patrick

Thank you, I will check it out.