SuperDroid

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]

please try the other battery. if trouble continues, it may be necessary to remove the hot glue around the connection at the motor controller. sometimes if it gets real hot, the glue will seep into the connection and cause a bad connection.

possible that its a bad connection at the roboteq battery input terminal or bad ground. make sure everything is tight and clean connections.

disconnect one of the batteries. They will both read the same voltage when wired in parallel…

Hey Tyagi,

Have any modifications been made to the robot since you received it? If so, please send pictures.

I would disconnect the battery not holding a charge, and test with one battery. Let us know what the results are.

Jerome,

Here is the documentation on the SyRen Arduino library.
https://www.dimensionengineering.com/info/arduino
Unfortunately, we do not have any already written code for the SyRen to Arduino interface.

Depending on your project, have you considered using RC control? That would be a lot easier and involve less code.

No, you can’t directly trip a relay using an Arduino’s digital outputs. This is true for the majority of common microcontrollers.

We do have a few products that will let you work around this issue and drive relays using an Arduino:

– Boards with relays on them already…[Read more]

This IMU is pretty inexpensive and has adjustable gyro sensitivity: https://www.superdroidrobots.com/shop/item.aspx/minimu-9-v5-gyro-accelerometer-and-compass-lsm6ds33-and-lis3mdl-carrier/2274/

There is an Arduino library available for it and you can adjust the gyro sensitivity through the i2c registers.

I’m looking at the Arduino code now. It is set up to the read the ultrasonic sensor values and report the raw values on the Analog2 byte of the return packet. The sensor should be connected to digital pin 8 on the Arduino. Try moving your hand in front of the sensor and see if the Analog2 value changes. There is no obstacle detection or stopping…[Read more]

The checkboxes at the bottom are digital (high/low or true/false) inputs and outputs. The top row of checkboxes are inputs (values coming back from the robot) and outputs (values going to the robot). The inputs will be checked when the robot sets the values high in the return packet, and you can set the output values in the Tx packet by checking…[Read more]