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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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2 votes
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How to determine the required CPU speed for a micro-controller with a 2-phase encoder attached to interrupts?

I am building a high-torque steering servo. I am trying to use the Adafruit Feather M0, which has a CPU speed of 48MHz, to monitor a 2-phase encoder that has 2400 pulses per rotation. I have attached ...
Shea Riley's user avatar
1 vote
0 answers
175 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 ...
WizardOfRobots's user avatar
1 vote
0 answers
103 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 ...
Vinko's user avatar
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1 vote
0 answers
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SPP Bluetooth profile compatibility with phone

I'm building a project that uses a cell phone to control a microcontroller via Bluetooth. I've decided to use the HC-05 Bluetooth module. HC-05 Manual: http://www.exp-tech.de/service/datasheet/HC-...
nesslersreagent's user avatar
0 votes
1 answer
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install micro-ROS on Windows?

I am trying to install micro-ROS on Win10, do you know if it's possible? If yes, can you link me a tutorial? I suspect it might not be possible.
Robowave's user avatar
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While the executor is running, where should the process of reading UART data occur? (callback? loop including spin?)

I'm using micro-ROS. The executor is running through spin, and the callback function is triggered by timer conditions to deliver messages. I wanted to add lidar data via UART here. However, I noticed ...
ertretff's user avatar
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1 answer
11 views

Response plan when data is not received from a peripheral device with a probability of 1/2 during spin

I am using micro-ros. The distance value is being received from lidar. To be precise, the data value is received through UART communication before spinning and the data value is output when spinning. ...
ertretff's user avatar
0 votes
1 answer
58 views

Esp32 stop receiving data through microros

I am facing some sort of communication issue as follows.... Problem Description: I am facing difficulties when attempting to run three ESP32 devices simultaneously, each connecting to a MicroROS agent ...
JUST CHILL's user avatar
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29 views

Robot Control Algorithms for Precise Positioning

I am currently researching the optimal controller algorithm to navigate my robot to a specific x and y position within a specific coordinate frame with a high degree of accuracy, approximately 5mm. ...
Osama Salah's user avatar
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9 views

Accuracy of PTZ with Permanent Magnet Synchronous Motor (PMSM)

For my project I need a pan-tilt system able to provide 0.1° resolution or better. I do have my own solution based on stepper motors with planetary gear for low backlash and 0.05°. However, I designed ...
D. K.'s user avatar
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267 views

Using micro_ros_arduino with ESP32 with wireless ROS system

I am retired and programming has always been a hobby but also my College Degree in Game/Simulations (90%). So I am familiar with a lot of programming as I used it in work for some development/problem ...
Randy Hearn's user avatar
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2 answers
10 views

Drive rc car using the commercial ESC

ROS : Melodic OS : Ubuntu 18.04 RC Car : ZD Racing 10427s I am trying to build my first automated rc car. I am currently designing the actuation module that will take the "geometry/twist" ...
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Do you know someone who has written a microROS agent for the OpenCr board?

We are using the turtlebot3 hardware components in our group. Now we want to implement our own tech stack. For this we want to build a micro ros agent on top of the opencr firmware - foxy devel branch....
Guela kais's user avatar
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65 views

Pi Pico - HC05 AT commands don't work

I am trying to set up a Bluetooth communication between two pi pico devices using HC05s. I am trying to make the two HC05s connect and I read that you need to set up Master/Slave configurations using ...
kak_taki's user avatar
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66 views

Jetson tx2 to Teensy 3.6 Serial communication issue

I am trying to establish serial communication between Nvidia Jetson Tx2 and Teensy 3.6. Using pyserial, while reading the data sent from Teensy 3.6 on Rx pin on the Jetson, I come to an error that ...
Jugal Mistry's user avatar
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88 views

Find viscous friction for DC motor transfer function

How do I find the viscous friction for my DC motor without measuring the input current and output torque. I have to do a theoretical model on simulink and can't find any answers on how to find it
Nick O's user avatar
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-1 votes
1 answer
188 views

Motor controller for two Hitec D845WP servos

I am undertaking a project using two Hitec D845WP servos running at 8.4 V. Hitec's website lists idle current of 30 mA, no load operating of 1600 mA, stall current of 10 A and ...
Dale's user avatar
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