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1  Community / Local Groups / Re: Arduinoids in Ontario Canada on: February 02, 2011, 05:28:30 pm
I'll take a moment to raise my hand and say that I am interested in meeting up with other Arduino fans in the Cambridge, Kitchener, Waterloo and Guelph area.

I've managed to meet up a year or so ago, with a couple of people from the University of Waterloo however they have now graduated and moved on.
2  Community / Local Groups / Re: Arduinoids in Ontario Canada on: February 02, 2011, 05:25:21 pm
stewartthecanadian,

If you are in the Toronto area, then I highly recommend a visit to Creatron Inc. http://creatroninc.com/. There is not much from the world of Arduino that they seem to be missing and the proprietor is very knowledgeable.

Creatron Inc.
255 College St.
Toronto, Ontario, Canada, M5T 1R5
Tel:    416-977-9258   
Fax:    416-977-4700
3  Forum 2005-2010 (read only) / Interfacing / Re: I need a Autopilot for my Blimp/Airship? on: September 10, 2010, 12:56:53 pm
AeroBoy

The Arduino Duemilanove is usually the best place to start as all the standard shields are designed to piggy back directly to it including xBee and motor shields.

I have had good luck with using the EasyDriver shield for motor control.

To be honest I think it would be a lot easier to use the Ardupilot rather than cobble together an equivalent.
4  Forum 2005-2010 (read only) / Interfacing / Re: Sure Electronics 1.5" 7 segment Display DE-DP001 on: September 10, 2010, 11:41:19 am
JamesCarruthers

Did you ever finish your Rally Computer?
5  Forum 2005-2010 (read only) / Interfacing / Re: Inductive Sensors for Arduino on: February 25, 2009, 04:43:19 pm
Thanks Lefty . . . I'll try to pick up the issue tonight on my way home.
6  Forum 2005-2010 (read only) / Interfacing / Re: Inductive Sensors for Arduino on: February 25, 2009, 02:38:38 pm
Thanks koyaanisqatsi for your input, I will experiment with your suggestions tonight.
7  Forum 2005-2010 (read only) / Interfacing / Re: Inductive Sensors for Arduino on: February 25, 2009, 01:34:58 pm
Lefty,

Thanks for the informed information about Arduino limitations in processing these kinds of signals and doing the ADC functions.

Based on my current understanding, I will modify the original op-amp circuit to limit the output and provide protection to the Arduino analogue inputs to stay under the 5 VDC limit.
8  Forum 2005-2010 (read only) / Interfacing / Re: Inductive Sensors for Arduino on: February 25, 2009, 01:30:15 pm
Hey Grumpy_Mike,

thanks for the link to the de-coupling tutorial. The most amazing thing was that the information was extremely well presented and actually made sense.
9  Forum 2005-2010 (read only) / Interfacing / Inductive Sensors for Arduino on: February 24, 2009, 02:21:24 pm
Does anyone have any experience using inductors as input sensors for an Arduino?

Many, many years ago . . . no doubt back when Hobbits lived in middle earth; Radio Shack published a great little series of books for electronic experimenters called, Engineer's Mini-Notebooks that were written by Forest M. Mims II who is a prolific writer on hobby electronics.

One of the most interesting projects (the Science Experiments book) was a simple seismograph that used a magnet suspended over a telephone pickup as a sensor for a small circuit comprised of two 741 op-amps running on a +9/-9 power supply. I built this device sometime ago and had very interesting results with it.

Although I could use an Arduino to measure, the output signal (0-14 VDC) from the seismograph as I still have the original circuit. I would like to rebuild the device from the ground up, using an Arduino for both processing the incoming signal from the inductive sensor and the Analog-to-Digital-Converter (ADC).

This would help to better utilize the Arduino's capabilities than just using it as an ADC interface between the seismograph and a PC .

However, I am a little cautious about simply attaching the inductive pick-up to the Arduino's analogue inputs.

I had thought about using the inductor with a capacitor to create a tank circuit, but am not sure if that is the correct route to take. Another possibility might be to use the inductor in an R/C network to adjust the frequency of a 555-based oscillator, but once again, this adds complexity to the exercise.

So does anyone have any suggestions on how to use a variable inductive coil as a sensor for an Arduino?

10  Forum 2005-2010 (read only) / Interfacing / Re: Motor Control Shield Encoder Option on: February 03, 2009, 05:06:32 pm
claudiopc

Thank you very much for the link. From the information, I found there, I now know that there are only two components (a Philips 74HC32N IC & socket) that I need to procure. All the other parts are the regular resistors, capacitors, LED's and switches that reside in most people's parts bins.

The hardware is the easy part, but what I really need is to find some instructions, sample code or at the least a description of operation.

11  Forum 2005-2010 (read only) / Interfacing / Motor Control Shield Encoder Option on: February 02, 2009, 05:18:24 pm
I have recently purchased a Motor Control Shield (V1.1 designed by David Cuartielles) and for the most part am quite happy with it . . . although the motor control IC gets quite hot and I am trying to figure out how to best heat sink the little beast.

According to the assembly instructions, the PCB has some extra space for an optional encoder; however, I have been unable to find any information specifically about the encoder (schematic, parts list, code, etc.)

My question is does anyone have any information about the encoder capabilities of this design?

12  Forum 2005-2010 (read only) / Workshops / Re: Arduino Interest in Toronto or Waterloo, Ontario on: April 15, 2010, 01:34:23 pm
[Although I had originally sent this to Elizabeth as a private message, I have since figured out that it would be best to post the message on the open board as it might just help flush a few more Cambrridge, Kitchener, Waterloo, Guelph or Brantford Arduionites out of the woodwork.]

Elizabeth,

Although, I have been playing around with Arduinos off and on for the past year . . . I am still a relative new Arduinoite as well. My background includes a fair bit of electronic hobby work, so the hardware end is easier for me than the programming end.

Having said that, a year ago I was trying to get an Arduino Interest Group started in this area; however the two or three other people that were interested were UoW coop students who were about to go out on their work terms so things never got off the ground beyond a couple of 1/2 hour introductory meetings.

I might be willing to meet with you and some of your class mates to talk about Arduinos and perhaps show some basic functionality. At this time, I work Monday-Thursday plus some Fridays; so my availability would either be weeknights, the weekend or possibly on a Friday.

As far as introductory books and tutorials I recommend:

Getting Started with Arduino by Massimo Banzi (one of the founding fathers of the Arduino)
http://oreilly.com/catalog/9780596155520
The book can be ordered through Chapters or Amazon or from many of the internet based Arduino suppliers.

The other resource that I would highly recommend is:

The Complete Beginners Guide to the Arduino by Mike McRoberts
http://earthshinedesign.co.uk/ASKManual/
This is a free E-book that will lead you from flashing LED's and driving simple DC motors to creating simple sounds and monitoring basic sensors.

13  Forum 2005-2010 (read only) / Workshops / Re: Arduino Interest in Toronto or Waterloo, Ontario on: March 27, 2009, 08:47:37 am
Nigel and the gang et al,

Sorry to be so long in dashing off an update, but I have been on-site doing a project install for most of the week.

Three of us met on Saturday morning (Darudude, myself and a Marianne (TBC) from UoW engineering) for about 90 minutes.

It gave us a chance to talk about Arduinos, how we came to be involved with them, some discussion about our current Arduino projects, some suggestions regarding Arduino sources and a small bit of show and tell.

Amongst this small group there appears to be a definite interest in forming a more organized Arduino Interest Group, although based on the current schedules for the other two participants, we will likely not be able to meet again until May.

There is a possibility that we could meet elsewhere although the UoW did work out fairly well.

How about you Toronto area folks, when are you getting together?

Surely, you are not going to let Waterloo become the centre of the Canadian Arduino universe are you?
14  Forum 2005-2010 (read only) / Workshops / Re: Arduino Interest in Toronto or Waterloo, Ontario on: March 21, 2009, 08:56:41 am
Darudude,

Just on my way out the door
15  Forum 2005-2010 (read only) / Workshops / Re: Arduino Interest in Toronto or Waterloo, Ontario on: March 19, 2009, 12:57:56 pm
I would also be willing to use an alternating location as it will help to draw people from a wider area.

If possible though it would be best if both sites were very close to the 401 to easily facilitate travel.

Example a Cambridge location (possibly my house which is 60 seconds off the hwy & 40 min from the airport) would make it easy for both TO and London people to attend.

 A Mississauga location near Dixie or 427 if possible would help encourage Cambridge, KW, Guelph attendees . . . and perhaps one or two intrepid Londoners.
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