Questions tagged [electronics]
Any device with electrical circuits.
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How to find center of a disk using robotic arm
Hello I am new to the field of robotics but have some knowledge of raspberry pi, arduino, python.
I want to make Robotic arm which can be used to find the centre of any disk.
There may be disk of ...
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Powering my robot with 12V battery which is charged by a gas/petrol generator while the robot is operating?
A have designed a robot to perform tasks in farms. But the problem now is I'm not sure on the best way to supply continuous power to my robot. All the motors are rated at 12V and only Arduino and a ...
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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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How to make door opening to the top
I need to make this construction (door is closed by default, door is opened to the top). This is the scheme:
Red rectangle on the picture is the aperture, blue rectangle is the door (weight is about ...
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One BEC for multiple ESC (Quadcopter)
I'm building a quadcopter and have discovered that most ESC have a built-in BEC, but I was wondering if it wouldn't be better to use only one.
What if I delivered power to my four ESC with a unique ...
CommunityBot
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How can I get the values of a IMU from the serial message received in Simulink via UART?
I try to read IMU sensor data from an Arduino mega 2560 UART with serial receive block of Arduino support package for simulink. The IMU can send binary packets and also nmea packets and I can ...
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Voltage rpm relation
I measure the voltage ESC drawing while increasing the dc motor speed. Multimeter shows that as long as the speed increases the voltage value decreases. Can anybody explain why this is happening?
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What actuator types exist that remain locked in their last position like hydraulic piston?
I would like to find an electronic actuator that mimics the characteristics of a hydraulic actuator, in that the position remains fixed without power drain when the actuator is not moving. Which ...
CommunityBot
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Circuit Design and Simulation [closed]
I want to design some circuits of my own. My area of expertise is in Computer Science Engineering. I have listed out the components which are essential in the circuit. I want a software which can be ...
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Many to One Bluetooth Communication Link [closed]
I have an application that requires data to be streamed from multiple Bluetooth modules to one host controller. Somewhat like multiple Clients and one Server.
The throughput i am looking at is ...
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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 ...
CommunityBot
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Dispensing precise quantities of liquid and powder [duplicate]
I've been toying around with the idea of automating the process of testing aquarium water for certain chemicals. Very briefly, salt water aquariums (reefs, specifically) require almost-daily testing ...
CommunityBot
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Strategies for managing power on electrical systems for mobile robots
What are some good strategies to follow while designing power supply for electrical systems on mobile robots?
Such robots typically comprise of systems with
microprocessor, microcontroller, DSP, etc ...
CommunityBot
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Off-the-shelf micro fluid dispenser
Need a way to dispense micro liter amounts of water (lets say 1-10ul). Only thing I've found is piezoelectric dispensers and they are >$100. Any suggestions?
I can build, but preferably would be an ...
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Magnetometer to measure high angular velocity in small object
I have to measure the frequency of a little circle in rotation. You can image this circle flying in air, because this circle can't touch anything that is not in rotation. So I can't use some simple ...
CommunityBot
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where can i learn electronics from intro to advance digital [closed]
I'd like some well put video series of like 30 videos. Or anything but it needs to thorough and in easy English...less mundane. So far all resources i have found either go upto resistors code or of ...
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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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Eliminating Electrical Noise from my motor driver
Background:
I am using an Arduino Mega connected to a RoboClaw 2x60A motor driver. I asked this question about the system, but I have since narrowed the scope of the problem. I tried adding a bunch ...
CommunityBot
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Measuring the performance and response rate of ESCs
How would i go about measuring and quantifying the performance of an ESC? I am looking to measure the response rate(in Hz) of an ESC, as well as it's performance(i.e how fast it starts and stops, as ...
CommunityBot
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what is the easiest method to plot a temperature in my pc? [closed]
After a lot of learning, I'm launching a reballing business and I feel the need to have a realtime plot of the temperatures involved (ideally 3 or 4) and I have an arduino uno and a few K type ...
CommunityBot
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Filling 30mL bottles with food-grade liquid
A project has been given to me at work, with no schematics or idea of where it was going. I need to fill 5 30ml bottles at a time with a food-grade liquid.
Based on the parts I have, I think the ...
CommunityBot
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What are the options for a thin light source (e.g. LED)? [closed]
I'm looking to make or buy something resembling an LED, that would be thin (about 0.5mm or less) and cheap (<0.1$ in mass production).
Any suggestions?
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Electronic noses for detecting dog urine
I have very limited experience with sensors or robotic components at all, and I hope you will excuse the lack of detail in this Question.
I want to set up posts around my yard with electronic noses ...
CommunityBot
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learning (embedded) electronics [closed]
I am an aerospace engineer (currently in grad school) and I really want to get into (embedded) electronics.
But I have this problem:
I understand the theory fairly well, I took an edX course in ...
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My Raspberry Pi is losing power in a surge
I have an RC car. The battery provides power to the ESC and then the ESC provides 6 V back out to the receiver. Instead of the receiver I have a Raspberry Pi, which uses the 6 V, steps it down to 5 V ...
CommunityBot
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Omron G5V-2 relay NO pins not working
I could swear that it was working for a while. I got back to my desk, tried it again, and it's no longer working. Could I have fried the NO pins on both sides? This is a DPDT relay. Everything works ...
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H-bridges and stall current
For a DC motor with a stall current of 950 mA, what should the H-bridge's current rating be? What will happen if we use our H-bridge L293D whose max. output current is 600 mA?
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Single power source for electronics and actuators
It seems popular to build robotic systems with separate supplies for the electronics and motors/servos, but what would be involved in a circuit that powers both from one source?
If it helps, here is ...
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Robotics Location Following and Tracking?
I am building a robot that will follow a target as the target moves around. I would like some help with the setup for tracking the target. The most obvious solutions are Ultrasound or Infrared sensors,...
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How do we make our robot work?
As a holiday project we are building a surveillance robot that is capable of transmitting live images using a webcam and is also capable of lifting small objects.
It uses a CC2500 module for ...
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How do space rovers survive at very low temperatures?
For example, if a rover has working temperature range of -70 to +120 Celsius, how does it survive and then restore itself if the temperature drops to -150 degrees for several months?
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Which is easier/cheaper: Hbridge vs ESC for controlling a motor?
I was able to find a small ESC for about $12 off of ebay. If you were designing a robot, would you see that and think?
\$12 bucks for an ESC that connects to simple pulse-wave interface -
sign ...
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What was the earliest concept of a robot?
I'm a highschool student studying electronics and for an assessment task on the history of electronics I have decided to focus on the history of robotics. I want to begin with the earliest possible ...
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Why does our LM2576 circuit suddenly cut down the power?
I have an LM2576 circuit plus an adjuster to adjust the output voltage, for controlling motor speed in a line follower robot. The circuit works great when adjusted to give out low voltages, but when I ...
CommunityBot
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Formatting an SD card for Panda Board ES
I have a Panda Board ES. I am not able to get it to boot. I sent it back to SVTronics to get it checked and they said that the board is OK; I am the one who is not able to configure it properly.
...
CommunityBot
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When taking VCC power from an arduino to a 12v regulator, then to a 5v, do I need two sets of capacitors?
I'm building an open-source bio-research hardware (ask me how you can help!) and I've got this guy here:
My big questions are:
Can I get away with all the ground being common? (I've got a 12v and 5v ...
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How can I best protect sensitive components against damage through vibration?
It's common for components on some types of robots to experience large environmental stresses, one key one being vibration. Is this something I need to worry about with typical electronics and other ...
CommunityBot
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Where can I find a tutorial or sample code for the Juniper WiFi Arduino Shield?
I recently got an arduino wifi shield known as "juniper" (I believe it was by cutedigi). I've tried to find code examples, but when I saw code, it was un-commented and very little explained, I could ...
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