SuperDroid

Hi Chris,
I would look at the wires running from the lights and make sure that they are still connected to the LED lights. If they are still connected, you can take off the top lid of the robot and see if the connector has come unplugged from the board inside.

If you still can’t get them to work, I would suggest emailing us a picture of the LED…[Read more]

Please see the attached PDF for instructions on getting your RunCam 2 set up as a replacement. Once you have changed those settings you should be good to go.

It looks like you have it! you are probably right about the max speed being 127, and anything over that amount wouldn’t really be doing anything, but just to be on the safe side, I would still constrain it to -127 to 127 just to be safe.

The sign of the motor might change depending how you have your motors hooked up, but it looks like it should…[Read more]

Good, I’m glad it helped. And yes, the math will have to be changed a bit, but it shouldn’t be too hard.

As far as the scaling goes, you are on the right track for the motors. It will take some trial and error, but I think you are off to a good start.

It was hard for me to understand at first as well, so you are not alone!
Ideally you would want to create a system of movement that is independent of forward, back, left, right, and strafe because of the case where you would have to move at a non standard angle (like 37 degrees).

In the RC example, we are taking 3 inputs from the RC controller…[Read more]

I would suggest taking a look at the Sabertooth Arduino Library. Specifically the Packetized Serial example for controlling the motors. This way you will be able to control each wheel individually without having to swap the leads around.

We also have some sample code for a RC Mecanum Robot on our github page that can give you an idea on how to…[Read more]

Hi Scott,
We usually set up the motor controllers so that the front wheels are both on one motor controller, and the rear wheels are on the other. So it looks like you have that set up correctly.

As far as the motor speeds go, it is an intrinsic problem with motors. they will all turn at slightly different speeds. The way that we can correct…[Read more]

if you are ok with laying magnetic tape, it will work well. you can also lay tape to the side of the track to indicate stopping locations, etc. https://www.superdroidrobots.com/shop/item.aspx/roboteq-mgs1600gy-magnetic-guide-sensor/2295/

https://www.superdroidrobots.com/shop/item.aspx/roboteq-mgs1600gy-magnetic-guide-sensor/2295/ we will have…[Read more]

Sorry, but autonomous is not a simple solution and is expensive, especially in small quantities. There is an IPS system that is IP rated. The IPS system is least expensive of the options available for positioning…

SLAM would be a way to go, but its more money than RTK GPS. Our IP robot is accurate to 2cm.

https://www.superdroidrobots.com/shop/item.aspx/ros-autonomous-programmable-ips-tracked-robot/2731/
https://www.superdroidrobots.com/shop/item.aspx/ros-autonomous-programmable-ips-wheeled-robot/2478/

This sounds like a really cool project! And I will help out as best as I can.

-Weatherproofing

To make sure your electronics are protected from water, start with a good quality air tight container. A sturdy plastic, or metal container will work. One thing that we have used in the past is a pelican case. These cases will hold up to just about…[Read more]

Hi Jerome,
A lot of this depends on your robot. Are you making a two-wheeled balancing robot like the one on our site? you can use the ADXL345 with the Arduino, and it should work fine for the purpose of balancing a robot, or keeping it level.

As far as programming, I would say it would be right between a beginner and advanced project as far…[Read more]

We always use packet serial with the Sabertooth. Make sure your dip switch settings are correct (1 and 2 down, 3-6 used to set the serial address). You are correct about the data ranges being .

Try debug printing the values that you are sending to the Sabertooth (Use Serial.print(value) in your code, watch the output using the Serial Monitor in…[Read more]

Don’t know of a way to go direct from xbee to sabertooth. We usually use a micro controller in between to process the serial packets between the xbees and then read joystick or control the sabertooth. The xbee logic level is 3v, the sabertooth is 5V, so you will have to level shift too…

No. The motors are different. The motors without encoders do not have a tail shaft, so without that there is no way to attached encoders after the fact. It’s a factory installation.

Why on earth are you setting the under voltage limit to 28V???!!! The motor controller is doing exactly what it is told to do. Its a 25V nominal battery. The voltage is going to drop rapidly from 29V since it is a 25V battery. Why did you change the settings and not tell us? The battery has low voltage protection, so that should not be used!…[Read more]

what are you considering discharged? the batteries are not discharged until <22V. They will drop very quickly from 28V with nominal load. The are 25.6V batteries. We have never had an issue with these batteries. We have had 1 12V one fail in 8 years. The likelihood that you have two that are no go is extremely unlikely. You need to…[Read more]