Questions tagged [mobile-robot]

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3
votes
3answers
136 views

How feasible is it to localize a robot based on EM beacon?

I am designing a little tabletop robot with a very simple goal of keeping track of where it is on the table as he traverses it. This, as it turns out, is a lot more difficult than I imagined. All the ...
0
votes
0answers
40 views

Bluetooth Controls instead of R/C Controls for simple Holonomic robot

I am new here and with little experience in electronics. I have assembled this holonomic robot, see link: https://shop.wickeddevice.com/product/omniwheel-robot-complete-kit/ It has 3 Omni-...
1
vote
1answer
187 views

Need to run a mobile robot on batteries

I made a 4wd mobile robot with an 4 DoF robotic arm on it and currently in process of designing a power board for my robot. I would like get a detailed road map on designing a power board for the ...
3
votes
4answers
1k views

Using rotary encoders with no interrupt pins

I little background first.. I have 4 separate wheels in my robot and an encoder on each wheel. I am using an arduino mega 2560 which only has 6 interrupt pins, every code that I've seen either uses 2 ...
1
vote
1answer
430 views

Why not connect battery negative to chassis?

I am making a mobile robot with a metallic chassis. Usually, a non-moving appliance will have the ground pin of the wall socket connected to the chassis, but in a moving device, there is only the ...
3
votes
3answers
2k views

Interference from motors on PWM signal

Am building myself a robot chasis that is RC controlled. There is an RC receiver attached in solution and I have a remote RC transmitter. When the motors are not running, I get a perfectly clean ...
1
vote
1answer
525 views

Pressure sensing controller using Stress Ball

I am thinking of a project proposal for my robotics course and we are required to make one that has a potential application on physical therapy or medical fields. One thing that came across my mind is ...
2
votes
2answers
3k views

Cascading PID DC Motor Position & Velocity Controllers

I'm trying to build a robot with a differential drive powered by two DC motors. First I implemented a PID Controller to control the velocity of each motor independently. Estimated the TF using the ...
1
vote
3answers
4k views

Can I power a 5V USB hub using 5.33V DC or should I use 7V with a 7805 voltage regulator?

I'm basically loading up enough batteries to run a USB hub and a webcam. The USB hub is rated at 5 volts. Right now I've connected 8 batteries (these batteries, if relevant) in series and in parallel ...
1
vote
1answer
292 views

Differential Drive for Heavy Robot

I'm asking here another question in relation to my previous one. I would like to know how would one proceed when you want to control a heavy robot with differential wheel drive. When it comes to ...
3
votes
3answers
849 views

Motor Control with PMW or RPM on heavy robot

I'm going to try to explain my problem as clearly as I can. I have been building a robot that has four wheels, 2 motors and 2 free wheels. Its a differential drive system. ...
2
votes
4answers
13k views

How to drop 6 volts to 5 volts

I am designing a robot using the PIC16F877A microcontroller that will avoid walls and obstacles. I plan to have it run off of 4 AA batteries. I was wondering how i would convert the 6 volt input ...
2
votes
1answer
228 views

Signal the MCU using GPRS

I am working on a project with a GPRS and MCU. I am feeding the data to my server via GPRS, it's socket server. I was wondering if there is a way ( AT Command ) to do the reverse, I mean I like to ...
0
votes
2answers
605 views

How do I connect this 3.3V system and 6V ish system together?

I have an old 'Cybot' robot I built from a kit. I'm trying to mount a Raspberry Pi on it to act as brains. I'm a computer programmer, but my electronics knowledge is very limited. Have access to basic ...
-4
votes
1answer
121 views

Cow tipping robot plans [closed]

Does anyone have plans for a cow tipping robot? Its hard to do by hand so we are thinking a robot would be good. I remember seeing a robot wars or some other show where one bot tried to tip another, ...
4
votes
4answers
2k views

Decoupling capacitor across Raspberry Pi GPIO input (+ Arduino + robotics)

I've been messing around with a robot kit from Parallax (the BOE Shield Kit), which has a 5xAA (7.2 V?) power source. The BOE shield includes its own 5 V regulator, which is used to control ...
0
votes
2answers
574 views

PIC18 Robot - Travelling exact distance straight using two wheel encoders problems

(EDIT: Added TMR0 & TMR1 set-up code) I have a small robot vehicle controlled by a PIC18f4585. It has two wheels (ball bearing on the front) as well as two rotary encoders. The following ...
0
votes
1answer
116 views

navigating every spot of a room [closed]

I want to build a robot that will navigate over every spot it can in a room. But i thought some kind of a laser to map the room would be best or maybe a ultra sonic sensor. Could anyone guide me in a ...
1
vote
1answer
117 views

Is it possible to use USB port with a transmitter to control a robot

I have a project in mind that works as a robot accepting input from the computer through a male connector. I have seen the circuits that use a wire system to connect to the robot. But is there any ...
2
votes
2answers
12k views

Motor control with an Arduino Uno… Is it possible (and safe)?

I have an Arduino Uno and an inexpensive RC jeep with a functional DC motor and front-wheel turning servo, but I don't have an Ardumoto shield to control it (yet). I'd really like to learn if it's ...
2
votes
2answers
2k views

How do i navigate RC car with a gps module on it from point A to point B?

I want to navigate the RC car from point A to point B. The gps module is used to find the current location coordinates i.e point A. The user enters the point B coordinates based on point A. I am ...
3
votes
4answers
860 views

Quieter, faster continuous rotation servos

I'm using a couple of continuous rotation servos to drive the wheels on a mobile robot. One issue I have is that the servos produce a loud, whining sound when in use. Do higher quality servos exist ...
1
vote
2answers
2k views

Wireless, battery operated web cam for mobile robot

I'm working on a Netduino based mobile robot that's controlled by software on a PC or phone (WP7). One goal of the project is to be able to steer the robot from another room of the house. Is there a ...