Real time plotting in Matlab

Hey ppl need some help, im working on a temperature controller that is based on 89c52 microcontroller, the sensor data is conv to digital by an adc0804 & the data is sent to the pc via the rs232 port, i need to plot a temp graph using matlab in real time, ive read that the hold function could be used but i havent had any success so far........ need help with the matlab code, the rest is fine... the baud rate is 9600

Posted by vedvern 10 years ago


Arduino & Matlab

Hi, I'm working on a project  the ball - on - plate, and I have a problem in controlling the model of the MATLAB eg PID parameter . Please Help

Posted by aljaur 1 year ago


Connecting the Arduino to the Matlab

Hello I am a student electronic engineering I'm working on a project (the ball - on - plate) and I am having trouble connecting Arduino with matlab please help

Posted by aljaur 1 year ago


PIC16F877A coding to interface with MATLAB(GUI)

Hello, i just to ask anyone who know how to interface PIC16F877A with GUI(graphical user interface) using MATLAB ? Thank you

Posted by esan 11 years ago


When Zombies Attack!

From the University of Ottowa:A mathematical modeling of an outbreak of Zombie infectionWith citations, graphs and MATLAB code.As seen in the movies, it is imperative that zombies are dealt with quickly, or else we are in a great deal of trouble.

Posted by lemonie 9 years ago


Converting NTSC camera to Webcam?

Hi, I was wondering if it is possible to use NTSC camera as a webcam by converting the output to USB. I want it to be a webcam so that I can play around with it in MATLAB. Cheers, Jas

Posted by jasubhi 10 months ago


Sensitive Accelerometer Chip

I've seen some projects that use accelerometer chips with arduinos to get readings (e.g. in MATLAB). I'm looking to do this but I'm going to be measuring very low amplitude, low frequency vibrations so, I imagine, the types of acceleromters I've seen used (e.g. the MMA7341L) won't be sensitive enough. Does anyone have a suggestion for which accelerometer would be appropriate (I know that MEMS are a popular brand - there's a list here: http://www.analog.com/en/mems-sensors/mems-accelerometers/products/index.html)  Many thanks for your time! Oli

Posted by ocheadle 3 years ago


Advice for hydraulic master thesis.

Hello, I’m a civil engineering student and I’ve always had a special interest for electronics, sensors, and arduinos. I’m finishing my degree for which I have to develop a thesis. After some research and based on some articles, I proposed to my hydraulics Professor to monitor the solids transportation (at the bottom of a river) using a hydrophone. This idea consists on measuring the intensity/quantity of sediments (like rocks and muds) passing through a certain spot. These measurements are made using a hydrophone put underneath a seel plate – when the sediments pass beneath this plate they create impulses or frequencies, which will then be analyzed. What I would like to know is the best way to capture these frequencies through the hydrophone – mobile recorder, daw, arduino? I intend to connect the hydrophone to the computer, either through the arduino or through a sound plaque, but I’m afraid these solutions are more prone to the appearance of noise. The frequency range to analyze is between 10Hz and 30kHz. Will it be a good solution to connect the hydrophone to the arduino? Another issue in my mind is the handling of the data gathered – should I use excel, matlab or python? Thanks, Carlos Esteves

Posted by amagro 5 years ago


Thoughts on Arduino/Raspberry Pi Idea?

Hi everyone, I am part of a research group at UC Berkeley working on a product involving the Arduino/Raspberry Pi. We are conducting market tests, and would really appreciate your help answering these questions. Thank you for your time! If you use Arduino/Raspberry Pi, how often do you use it? How do you use it? Would you consider it mostly a hobby or do you use it for school/industry as well? How were you first introduced to it? What are your general thoughts on the Arduino/Raspberry Pi? Did you learn to program by using the Arduino/Raspberry Pi or did you have some prior experience? If you had prior experience, how much? What languages are you well-versed in? Would you be interested in a model-based approach to programming Arduino/Raspberry Pi functions? This would be something akin to Matlab’s Simulink or Labview’s visual programming (flowcharts). The basic idea would be to remove the need to code in C. If you are not interested, why not? If you are interested, what specific features would you enjoy? Do you believe such a tool would be an efficient way to teach/introduce students to programming? In addition, here is a 1-minute survey (on a similar subject) if you are interested: Survey: https://docs.google.com/forms/d/1dkwyhC59I7h8IOuNFyL_tbjo7AFucTP0KQS0mYH1qy4/viewform

Posted by RobertB3 4 years ago


Should I work at Squid Labs/Instructables - A questionnaire

I just discovered this gem of a mock questionnaire kinawera wrote a few months ago that is a primer for prospective Squid Labbers. While it's full of inside jokes, I still think you'll find it humorous. Employment questionnaire:SHOULD I WORK AT SQUID LABS?Has something you learned on MythBusters saved your life? How many times?A) OnceB) TwiceC) More than twiceThe difficulty with string theory is:A) it's too short at one endB) the wrong gauge of stringC) not enough of it is made into bridlesOn a one-to-ten index of snuggling, where would you position yourself?How would you characterise your approach to body odour?A) TolerantB) Very tolerantC) (There is no third option on this one)Are at least three major components of your car entirely constructed out of kitchen implements and/or braise?Have you ever used an air compressor for personal hygiene?Can you perform rudimentary kiteboarding maneovres, including permanently alienating beachgoers, preferably through incidents requiring ongoing hospital treatment?Do you have a communal attitude to futons and 40 foot school buses?Define: Mank, munted. Use both in a sentence.Do you like squid?Is a sense of shame a strong, medium or weak motivator in your daily life?You are given a pair of Crocs. What colour are they?Have you ever mapped out a sexual position on Solidworks and/or Matlab?Define the term: bicycle

Posted by ewilhelm 10 years ago


Project Collaboration?

I'm REALLY bored at work at the moment and need a personal project to distract me. The problem with past projects is I often run into problems or lose interest and they fall by the wayside. I was thinking that if the project was a collaboration I'd be more motivated and could call on people with better skills than me. Anyways I'll propose a few projects, and let me know if you are interested. Or if you've got an idea, post it up. I'd love to do something robotics related, but m programming skills aren't great. I can use "wrapper" environments, like Matlab and Arduino, but raw C++ isn't a strong point. I've got access to all the CAD stuff that would ever be needed, Pro/E, Solidworks, AutoCAD, ANSYS, Strand7. I've got some skills in and access to composite manufacturing, like carbon fibre and glass but no vacuum baggin facilities anymore. My first project idea is a bargraph type watch - kind of like the awesome binary watches here, but the time increments on a bargraph. I think only one bargraph to show the minutes would be necessary - you pretty much know the hour most of the time, and you could work it out using the minutes if it's around the hour. A ten segment display would give resolution of 6 minutes - good enough for most purposes. I could do the hardware layout and manufacturing for this project, but I don't think I could do the programming. how about a homemade SMS device? not the most practical when mobile phones are so small and cheap and would be WAY more fully featured, but I think it would be cool to have a homemade device that could at least send SMSs. Open source, single sided PCB, would be awesome. obviosuly as small as possible but maybe aim for something the size of a blackberry of treo? Not stylish maybe but maximum hacker cred thumb keyboard ---> microcontroller ---> cellular module&LCD GPS based car locator - I know this functionality exists in modern cars but certainly not my 1994 feroza - a box that sits in your car that SMSs you GPS coordinates if your car alarm is activated. I've been looking for this for ages in a commercial product but the prices are outrageous. Other more outlandish projects are a CNC machine and single sided, through-hole, no (or very little) programming MP3 player Any ideas?

Posted by trialex 11 years ago


<5mm distance sensing, <100micron accuracy, GUI, RasPi or Arduino?

Hi there, I am trying to keep my hardware/ coding skills alive and spruce up my bicycle wheel truing stand. I need to figure out the required hardware + software for the following: I want to build a non-contact distance measurement sensor system and get the output "into" my computer for display in a graphical user interface. I know I could omit the latter step with going directly onto a mini-LCD screen, but trying to use this a learn-another-programming-language learning experience (I've coded Matlab galore, pondering Python for this project). General system components: Sensor - [something - RasPi or Arduino I guess] - laptop (running debian) - GUI displaying continuous sensor reading Sensor: I've web-searched the hell out of this, but not finding anything quite answering my questions. I want to continuously measure the distance from the sensor to a bicycle wheel rim braking surface. Material is aluminium, shiny, though not smooth. Biggest problem with the web-search is being swamped by proximity sensor results (on/off) rather than a distance proportional output signal and much lower resolution projects. I rule out IR or optical sensing, now stuck between ultrasonic and inductive sensing, though tending to the latter for a faster response/adjustment to change time. Sensor criteria (other than reasonable $$): - total sensing range: ca.5mm - sensing accuracy 10 to 100micron/ 0.01 to 0.1mm - don't ask if that's needed, a bit of overkill, I know, but a bit of OCD doesn't do any harm, eh? - fast-ish sampling rate (so that when I turn the wheel, the number on the screen updates nice and fast, guess >25Hz is sufficient). [Something - RasPi or Arduino]: I know that I could omit the laptop GUI part (mini-LCD, LED array, etc), but keen to learn/ practice a little Python with this project, so I guess I am tending to the RasPi, but I am open minded. All I want is the analogue sensor out to end up as a digital reading "inside" my computer to be passed to my GUI as a reading. Essentially a mini A2D converter. Not fussed whether the output is in actual distance units or in arbitrary units/ current units (I guess the sensors put out a proportional current signal?). GUI: Depending on the above, how do I best get the signal "into" a Python program? A moderate fast sample rate >25Hz should suffice.  Any help with this would be greatly appreciated! LaserCycle

Posted by lasercycle 3 years ago