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Code 42: December 2010

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Friday, December 31, 2010. Hello everyone, welcome to my blog. I thought of starting this blog for several reasons. Firstly, I like to think myself as an inventor. I like to research stuff and build new things. So, this will be a place where I can post the crazy things I try out, things that are successful and others that some people might call 'failures'. I have had some experience on blogging in the past, but didn't really get the hang of it. Hopefully, this time it will be different. :). If you go sho...

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Code 42: What is the meaning of the numbers on Brushless Motors?

http://code-42.blogspot.com/2011/03/what-is-meaning-of-numbers-on-brushless.html

Monday, March 21, 2011. What is the meaning of the numbers on Brushless Motors? If you go shopping for Brushless motors you will be confronted with a lot of numbers to choose. For an example, you would see motors marked with 3632 22turn 1500Kv, 2213 20turn 920Kv etc. So what does all those numbers mean, and how would you choose? Here's a simple guide. Let's take this motor for an example,. Turnigy 2213 20turn 1050Kv Outrunner. It's marked as "2213 20turn 1050Kv Outrunner". Let's see what it means. One th...

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Code 42: March 2011

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Tuesday, March 22, 2011. Li-Po Batteries Explained - Part 4. Note: It's been about 2 months since I've posted the part 3 of this article. Sorry for being late with this part. I hope you have read my earlier articles on Li-Po batteries (Li-Po Batteries Explained Part 1. Now let's look at the most important part - charging and maintenance. First of all, why is this so important? Well, just watch the following video on what happens when you mistreat a Li-Po battery. The general guideline for the charge curr...

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Code 42: February 2011

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Tuesday, February 22, 2011. Generating a PWM Signal Based on an Analog Input - miKroC. Now, think of a scenario like this: You want to change the duty cycle of your PWM signal based on a analog signal. It can be from a variable resistor that you want to use to increase or decrease the duty cycle, or it can be a feedback from a sensor which is analog. So, how can we do it? So, now that we have our microcontroller, let's get down to the code. Here's the sample code. Unsigned int temp res;. PORTC = 0;.

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Code 42: July 2011

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Sunday, July 10, 2011. Building a Quadcopter - Part 3. It's been another few weeks, and I'm back to building my quad. Since I recently got my transmitter, it was time to start building the electronics of the quad. The AeroQuad project ( link. Is based on an Arduino for the flight control. It basically uses a 3-axis Gyro and a 3-axis Accelerometer for the flight sensing (other sensors such as Magnetometers and Barometers are also supported, but optional: more info. For Arduino Mega and. 5 40 pin Headers.

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Code 42: June 2011

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Sunday, June 19, 2011. Building a Quadcopter - Part 2. It's been over 2 months since I posted the first post on building a quadcopter ( link. You would've thought that I must have completed the build by now. But actually, I couldn't do much. Mainly because that my transmitter shipment got late. As you remember, I ordered a HK-T6Av2 from HobbyKing ( link. So, here it is. I have to say, even though it has been through a transit of two months, it was in perfect working order. Receiver and the Bind Plug.

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Code 42: January 2011

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Wednesday, January 26, 2011. Li-Po Batteries Explained - Part 3. If you've read my previous posts about Li-Po batteries (Li-Po Batteries Explained Part 1. You'll now understand the basics of Li-Po's. Now let's look at some standard ratings of Li-Po's that you'll need to consider when you buy them. 1S = 1 cell x 3.7V = 3.7V. 2S = 2 cells x 3.7V = 7.4V. 3S = 3 cells x 3.7V = 11.1V. As you might have noticed, the 'S' means the cells are connected is 'Series'. There are packs where the cells are connecte...

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Code 42: April 2011

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Wednesday, April 6, 2011. Note: This is the start of the 'My Projects' section. This is where I post about the projects that I personally do. You can track my progress, my decisions and their outcomes for the problems I face and of course failures (sort of.). So, I hope you enjoy this as much as I do and please leave comments. Which was just within my budget. So, I started gathering my resources. The HobbyKing HK-T6Av2 Tx and Rx. You can buy it from here. Now, I didn't consider this because of the low pr...

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Code 42: Building a Quadcopter - Part 3

http://code-42.blogspot.com/2011/07/building-quadcopter-part-3.html

Sunday, July 10, 2011. Building a Quadcopter - Part 3. It's been another few weeks, and I'm back to building my quad. Since I recently got my transmitter, it was time to start building the electronics of the quad. The AeroQuad project ( link. Is based on an Arduino for the flight control. It basically uses a 3-axis Gyro and a 3-axis Accelerometer for the flight sensing (other sensors such as Magnetometers and Barometers are also supported, but optional: more info. For Arduino Mega and. 5 40 pin Headers.