Questions tagged [microcontroller]

A small computer on a single integrated circuit containing a processor core, memory, and programmable input/output peripherals.

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2answers
605 views

Need a pushing mechanism

I'm new to robotics (and maybe it's not even robotics), and want to build a "pushing mechanism" to automatically push a "pop up stick" up from my kitchen bench (see product here: http://www.evoline.no/...
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115 views

Technique to increase POV resolution

I have thought of a technique to increase the resolution of a POV (persistence of vision) display. In an usual POV display, the LEDs are arranged in a strip and spun in a circle. There are two ...
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1answer
319 views

Will this pseudocode work as a basis for a flight controller?

I'm programming a flight controller on an Arduino. I've researched how other people have written theirs but without notes it's often so obfuscated that I've decided it will be easier and better to ...
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1answer
268 views

The 3 key components of a robot are controller, servo, and reducer. Can someone give us an “official” explanation of what they do respectively? [closed]

I've googled a lot but wasn't able to find official definitions of these 3 parts. Maybe the explanations of servo and controller are good enough, but I'm still trying to look for a more "official" one....
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2answers
56 views

Switch activated by a microcontroller

I'm working on a project where I'm using a voltage that is higher than what most microcontrollers can handle. I'm looking for a kind of switch that will connect a power source to an electromagnet and ...
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1answer
96 views

How to make a robot? [closed]

For instance, how would you hook up a electric pump communicate with a motherboard? Let's say I buy a electric pump, I hook it up to some sort of metal structure that if the pump is turned on it moves ...
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2answers
5k views

How to further understand the computed torque model controller

For the following controller what do $q_{des}$ and $q_{act}$ stand for? Also, what is the general principle of this controller? Thanks!
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0answers
131 views

Starting out, dissertation project using computer controlled drone [closed]

For my final year in Computer Science university I will be doing a dissertation that includes controlling a drone through computer and communication with an onboard camera for computer vision. The ...
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0answers
28 views

Quality check robot [closed]

How to develop a robot based system to continuously monitor and check products for defeat which are moving on a conveyer belt using sensors and kick out the defect product from the queue?
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1answer
73 views

Suitable uC for atonomous robot

I am going to build an autonomous robot with Kalman-filter for localization integrated from Lidar, encoder, IMU and GPS. I will also add obstacle avoidance while moving to the required position. Is ...
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1answer
2k views

Counting number of people entering a room [duplicate]

We are making a project in which we want to count the no. of people entering and leaving a room with one single entrance. We are using IR sensors and detectors for this ,along with an Aurdino. We have ...
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1answer
86 views

Neural Nework code or library for MSP430G2553 microcontroller [closed]

I am new here and i am new to neural network also. :P I have gone through the concepts of Neural Networks but i want to implement it in my project including microcontroller MSP430G2553 on LaunchPad ...
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2answers
109 views

Fixed Wing UAV: Do inherently unstable systems desire to be stable for all cases when a closed loop control is implemented on them?

As we all know fixed wing vehicles are designed to have inherent instability which is what enables all fixed wing vehicles to fly. However does this apply to all cases? Do inherently unstable ...
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3answers
986 views

Remaking an RC transmitter for controlling aircraft

I am thinking about working on alternative drone controllers. I am looking into making it more easy to use and a natural feel (debating between sensor bracelets, rings, etc.). The main issue I have ...
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2answers
1k views

How to interrupt on a data ready trigger when communications to the sensor are interrupt driven?

Background: I'm using the L3GD20H MEMS gyroscope with an Arduino through a library (Pololu L3G) that in turn relies on interrupt-driven I2C (Wire.h); I'd like to be able to handle each new reading ...
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1answer
79 views

A simple function plotter project

To plot any curve or a function on a paper we need points of that curve, so to draw a curve, I will store a set of points in the processor and use motors, markers and other mechanism to draw straight ...
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3answers
665 views

Software real-time of ROS system

As far as I know, a hardware real-time robot control system requires a specific computing unit to solve the kinematics and dynamics of a robot such as interval zero RTX, which assigns CPU cores ...
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3answers
246 views

Alternative to BeagleBone Black for Node.js based remote control project?

I am working on a remote control project that involves using Node.js and Socket.io to transmit joystick data from a webpage to my BeagleBone Black. However, I am somewhat disappointed with the ...
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1answer
2k views

Typical Problem in Simple Line Follower Using 3 sensors

I am working on building a line follower robot using ATmega2560 and I want its movement to be more precise. I am facing a very typical problem. It consists of three(3) IR sensors. The thickness of the ...
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1answer
230 views

Microcontroller flashing itself

Can a micro controller flash itself? What i mean to say is, I have an STM32F103RG with 1Mb Flash Size. I have a UART Communication modem connected to it. Can i send a firmware (.HEX or .BIN) to the ...
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3answers
429 views

How can I increase the resolution of a PWM signal?

Say I have a motor and I want it to spin at exactly 2042.8878 revolutions per minute. Say I have a very precise sensor to detect the RPM of the motor to a resolution of 1/1000th of a revolution per ...
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2answers
1k views

How can I reduce a motor's maximum current draw?

I have a motor with a stall current of up to 36A. I also have a motor controller which has a peak current rating of 30A. Is there any way I could reduce the stall current or otherwise protect the ...
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1answer
143 views

Automatic sliding window shutter

I want to build an automatic sliding window shutter and need help with part selection and dimensioning. Some assumptions: window width 1.4 m sliding shutter weight 25 kg max speed 0.07 m/s max ...
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1answer
86 views

using a device with os instead of microcontrollers

Im working on a robot that needs image processing to analyze data recieves from cameras. As i searched for ARM and AVR libraries i found that there is no dip library for these micros and their ...
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2answers
307 views

Changing STM32 Nucleo Board's Microcontroller

I have a STM32F072RB Nucleo Board which has a 64Pin Microcontroller. For my application I chose the sTM32F103RG which has a bigger RAM size and Flash size too. Can i Remove an F072R from a Nucleo ...
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2answers
127 views

Air hockey with a robot as an opponent

I'm not sure if this is the right place to post this but here goes. So, as the title states, I'm planning on building a desk that doubles as an air hockey table which has a robot on the other side. ...
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4answers
2k views

How to rotate a dc motor at a fixed rpm

I am using 8051 microcontroller and a dc motor.What to do if i have to rotate the motor at any fixed rpm. Let's say 120rpm. And if it is possible by generating pwm,how to do the calculations for the ...
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1answer
247 views

How is the absolute flash size calculated in a microcontroller?

I am working with an STM32F103C8 which has a flash size of 64kBytes. Now i am using ChibiOS 2.6 and the build file is a binary file of 82kBytes. Using ST-Link Utility, the program is getting dumped ...
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1answer
138 views

Duty cycle mapping

I need to build a conversion/mapping algorithm from a controller (PID etc.) output to the duty cycle in order to command my bldc motor via esc. I couldn't do it yet because l think l dont know the ...
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1answer
459 views

Using 2x UARTs on STM32F072RB

I am trying to use 2x UARTs with ChibiOS on the STM32F072RB Nucleo Board. I initialized UART2 but I am still getting output on UART1 pins, which is totally weird. ...
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1answer
1k views

STM32_OC_Timing and IRQHandler

I created a program to simple time base delay (in seconds). I have problem: How to read a interrupt flag from channel 1 etc.? When I use ...
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3answers
14k views

Control both Velocity and Position (Linear actuator)

I am trying to control the velocity+position of a linear actuator. At this moment I am able to control the position or the velocity. But I'm trying to control both. What the control has to do: Let ...
2
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1answer
523 views

How to control a dc motor

I have 2 of these 12v motors and a 12v battery http://www.enigmaindustries.com/Motors/Bosch_EV_Warrior.htm I would like to know what the best solution for controlling this motor with an Arduino Uno ...
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2answers
4k views

how to implement and code inner and outer PD controllers for quadrotor for position tracking

The quadrotor system is multi-ODEs equations. The linearized model is usually used especially for position tracking, therefore one can determine the desired x-y positions based on the roll and pitch ...
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1answer
1k views

STM32F3 timers & computing

I have an STM32F3 discovery board. I want to go to the next step and I want to try to use timers in a few configurations. How can I calculate variables (such as prescaler, period)? I looked in all ...
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1answer
82 views

Is it possible to have A/V feed and serial communication on an RF transceiver at the same time on an Arduino?

Is it possible to transmit live audio/video feed and at the same time, receive commands through UART using only 1 RF transceiver connected to the Arduino board? I want to control the Arduino through ...
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1answer
89 views

read from Ultrasonic HC-SR04

i want to run two HC-SR04 on one PIC16F877A and send the value mesured by the two ultrasonic to serial port. this is my code using PIC C Compiler : ...
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2answers
473 views

make hc-sr04 receive from another one

I have 3 ultrasonic Sensor (HC-SR04), i want to use one of them as transmitter, and the other as receiver, i want to let the first one send ultra Sonic waves and the other receive these waves from the ...
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3answers
867 views

algorithm Simple Stereo Vision

I'm working in a project implementing a vision system. I'm a student and this is the first time I'm doing something like this, it has been a challenge. I'm using a controller (Netduino+2, .Net ...
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1answer
357 views

Iron man Jarvis like robot

I'm very passionate about robots from my childhood.I'm a java developer. I love sci-fi movies.I have a little bit knowledge in embedded systems and electronics. My ambition is to build a robot like ...
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0answers
100 views

Microcontroller for running Linux RTAI

I'm a beginner in Robotics. I'd like to ask what are the minimum/recommended specs for a microcontroller to run a real-time system such as Linux RTAI? What is the popular microcontroller for ...
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1answer
126 views

Automatic agricultural robot using 8051 [closed]

I want to build a automatic agricultural robot for my final year diploma project. The basic idea is to program 8051 to drive the robot in a fixed path in farm for ploughing the farm which i am ...
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0answers
99 views

choose ZigBee modules for full wireless mesh

What is the most common ZigBee IP Modules to create full wireless mesh mode? I know that it should be 1) coordinator and 2) router to create full-mesh But I am interesting about what kind of modules ...
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1answer
1k views

FRC RoboRio Eclipse can't find edu.wpi.first.wpilibj

The first time after importing a project into the Eclipse workspace we find that eclipse cannot find the WPILIBj. On any import line:import edu.wpi.first.wpilibj.* ...
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1answer
151 views

Communicating between a BeagleBone Black and a servo controller

I am a complete newbie and recently joined a robot team at my school in order to gain some experience. I have been assigned a task of driving a servo using a Pololu Mini Maestro USB Servo Controller. ...
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2answers
158 views

Create Artificial Integelent Robot Ability to communicate with Computer : Which language i should use [closed]

I know some languages like PHP, C/C++ and Java but I'm not expert in these languages. I want to create an Artificial Intelligent Robot that can do these Task; able to communicate with Computer (USB, ...
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2answers
2k views

Help for Cracking Robotics Interview

I am studying electronics engineering. I am fond of robots since my childhood. I have small doubt i.e. if I want to get placed in robotics and automation based company ,what should I must study(...
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1answer
743 views

Uploading edited code for Arducopter

I'm attempting to customise some code for my DIY pentacopter frame. To that end, i've modified the some existing code, and saved it under AP_MotorPenta.cpp and AP_MotorsPenta.h . I'm currently trying ...
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4answers
377 views

making a robot that knows your location

I've just made a radio frequency remote control using PIC microcontroller and I want to do something useful with it. I am thinking of a robot that gets things for you while you are at bed but here ...
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3answers
10k views

How would i go about learning to code a flight controller?

I'm interested in quadcopters/multi-rotors and want to eventually code my own flight controller ala an APM and/or Pixhawk. I've got a little experience in programming (i.e i know about if/else/else if ...