SuperDroid

Hi. If B+ and B- are shorted, the sabertooth needs to be returned to Dimension Engineering for repair. Sorry

Hey there Steve!

Welcome to the world of robotics, you’ve chosen a great time to get into this! Having hauled beach wagons I can sympathize, it’s definitely a drag. I’m going to try to go through your list of specifications and see if we can provide some advice.

We have a support wiki that has a section on building robots. It offers some infor…[Read more]

Hi Samuel,
Sorry but we order the wheelchair motors already assembled and do not carry individual parts. Unfortunately if the part cannot be repaired you would need to order a new motor.

Hi Peter. Nice mower! It looks like its done well for you. The 2WD design does have its limitations. For hills a 4WD is the way to go. Here is a prototype 4WD that we built recently that is cutting on slopes up to 38 degrees.

As for being able to cut close to a fence, there are some tradeoffs to…[Read more]

I’m not familiar with this pipeline for controlling robot arms but it sounds like you can use grbl regardless since you’re on Arduino and you need to generate a pulsetrain for the stepper motors. I haven’t worked with Universal G Code Sender either but I think you’re right that this will be too restrictive for what you’re trying to do. The first…[Read more]

Yes, those motors can definitely be mounted horizontally as well. If you look at an electric wheelchair, that’s actually how they are mounted.

You can get chains to put the on the wheels. Converting to tracks would be a very difficult task… We have used chains before and it works well.

That code is written for our PWM Motor Controllers, which take a PWM signal input. Take a look at the RC_Mecanum_Sabertooth sketch for the Sabertooth implementation.

You can use those Servo Drivers but you will have to modify the Arduino code to send commands to those instead of the Sabertooths. From the datasheet it sounds like you will need to put the drivers in Digital Speed Control mode and send it Modbus ASCII commands from the Arduino. I haven’t tried looking but I would expect you can find some Modbus…[Read more]

Hi Aleksandr,

Your motors are intended to be operated using a Servo Motor Driver, which they mention in the link you posted (https://robokits.co.in/motor-drives-drivers/encoder-dc-servo/dc-servo-motor-driver-40v-20a-w-t-step-direction-input). It may be possible to bypass the servo part of it and operate as a basic DC motor but I don’t want to…[Read more]

We would not recommend removing screws. You can remove the spring, but it will not provide a ratchet/lock of the stick and the rubber boot tends to push the stick back close to center, so you will need to remove the boot too.