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1  Community / Bar Sport / Re: Your latest purchase on: March 20, 2013, 04:55:34 pm
I was getting nowhere using an Arduino with Ethernet for my "Internet of Things" projects and ordered a Pi simply because they were so cheap. After I played around with it for a few days I realized it was a computer, not a micro controller and was the perfect solution to combining sensors and web pages so that I could use my iPhone as the GUI without having to write any apps for the phone. I was pretty surprised at the performance of the Pi running what I generally consider desktop applications. I'm still impressed at what you get for $35.

What class memory card do you have on it? If it is class 6 it will be very fast.
2  Community / Exhibition / Gallery / Re: Tune box on: March 20, 2013, 03:42:03 am
Looks like a nice neat little build - and loud too!

A door bell maybe?

That's a nice idea, defiantly can do. No amplification is used, only the power from the arduino nano. If you are interested when i get back home i will look up the model of the speaker. Originally it was used in a GSM (LG ku990 viewty).
3  Community / Exhibition / Gallery / Tune box on: March 19, 2013, 05:28:32 pm
Utterly useless gadget, except for playing tunes. Put it together over the weekend, just for fun. Any ideas for practical use?
4  Community / Exhibition / Gallery / Re: Robot arm on: January 22, 2013, 04:57:58 am

I hot glue the servo to the strips. It seems weird, but it is strong and it very easy to disassemble later. I use an x-acto knife to scrape the silicon.

This is the project for my diploma (lots of hot glue and isolation tape):
5  Community / Exhibition / Gallery / Re: Robot arm on: January 22, 2013, 03:28:06 am
Nice job, is that 'meccano' you used to build it?
Could become a number of useful tools.

Yes, this is correct. I don't have access to CNC router, so this is one way I prototype. You can bend the parts, so that they can fit together and everything is connected with bolts and nuts. But this is also the problem. You can't make very symmetrical construction, because every part is little different from one another. The bolts and nuts get loose.
6  Community / Exhibition / Gallery / Re: Robot arm on: January 21, 2013, 08:15:28 am
Brilliant... my daughter is working on something similar, not quite so elaborate as a "proof of concept" and she's currently figuring out how to make a simple grip.

That's a very very nice piece of work!


This is so cool! If you want i can make some close up shots of the grip?
7  Community / Exhibition / Gallery / Robot arm on: January 21, 2013, 04:08:22 am

This is what i have made over the weekend. It is very basic robot arm made from children's constructor. I always wanted to build one. If you have some clever designs, please share them below.

For the future I'm planing to make high precision one, maybe from aluminium.

8  Using Arduino / General Electronics / Re: Solar Power on: November 21, 2012, 05:55:59 am
What is your project about?

There are a few kinds of solar panels. It depends on the money you have to spend what quality you can get. From there on you can see how big you can make your solar panels and calculate what power you can get.

The other way is to calculate how much power you need and from there calculate what kind and the size of the panels.

9  Using Arduino / General Electronics / Re: Problem with 74165 8-bit PARALLEL-TO-SERIAL CONVERTER on: November 21, 2012, 05:46:21 am
Thank you for being so awesome! It worked.

I'm using 74165s because, those are the only ones I could get my hands on. If i order them online, the delivery to my country is expensive as hell. The power consumption is not an issue for this project, but I'll get the 74HC165 first chance i get.

10  Using Arduino / General Electronics / Re: Problem with 74165 8-bit PARALLEL-TO-SERIAL CONVERTER on: November 20, 2012, 05:17:24 pm
You show connections to pins 12 and 13 but the codes says it uses 11 and 12.

I've look at my protoboard and it is wired correctly. The mistake is in the schematics.
11  Using Arduino / General Electronics / Problem with 74165 8-bit PARALLEL-TO-SERIAL CONVERTER on: November 20, 2012, 04:40:36 pm

I have problem interfacing with the 74165 (not 74HC165). I only get HIGH as an output (11111111).

This is how it is hooked up with the Arduino Uno

I run this code (i have changed the number of registers to 1)

Any ideas?
12  Using Arduino / General Electronics / Re: Light bulb with Arduino? on: September 09, 2012, 05:45:27 pm
Check out this tutorial. You will need a few things along the way doe. Please be very careful.
13  Using Arduino / General Electronics / Re: Controlling the linear pots of an RC transmitter from Arduino on: September 08, 2012, 02:40:11 am
Can you give us more information about the mode - size, does it have any motors mounted on it or any other gear (some pictures will be helpful). If I was going to make such kind of simulator i would use stepper motor for the propulsion and a servo motors for turning. You can easily control the stepper motor's speed and direction.
P.S. Props to your dad very nice idea

Edit: maybe this can give you some ideas
14  Using Arduino / General Electronics / Re: Measuring voltage from solar panels on: September 06, 2012, 07:46:06 am
I've made the modifications today and everything worked, thanks for the help.
15  Using Arduino / General Electronics / Re: Measuring voltage from solar panels on: September 05, 2012, 11:16:01 am
According to his original post, it is a solar tracker, not charger. Those panels will only aim the main panel.

This is correct. This is not solar charger. The thing has 2 servo, bluetooth, rtc and e thermometer, no way you can power those with the kind of solar panels mounted on the tracker. I will become software engineer (hopefully) this year. The project is part of my graduation exam. I had the task to write the software for a solar tracker, but I've decided to make the "real" thing instead. Building stuff is fun  smiley-wink.
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