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Misc / Dramatic career change - please help
« Last post by brad87 on August 05, 2014, 02:57:01 AM »
Hi guys,

I am new to this forum and I really hope you will be able to give me an advice.

I am 26 year old Master of Science in Architectural Engineering with 2 years of professional practice. Unfortunately, I am not very happy about being an architect and if I could turn back time I would definitely do it and choose something different.

At the moment I am establishing my own company based on quite innovative idea (mixed IT and Archi.). If everything goes well my finances will be secured with not much attention from my side. It means that I might have a lot of free time soon for developing my interests. These are mostly related to different kinds of engineering - especially R&D projects, innovative, visionary things.

Since as a kid I have spent just years on building simple robots, playing with soldering tool, transformers, coils, engines etc. I got an idea that perhaps ROBOTICS is the right way to go now. Of course, I am not thinking about industrial side of this discipline.

I am ready to abandon all my current architectural knowledge (seriously) but on the other hand - maybe there are some elements that could be helpful? Architecture as a science is strictly related to construction (lots of CAD), ergonomics, functionalism, human factors and of course design. Do you think any of these skills would be advantageous in robotics?

Till the end of this month I need to register to the new University. I choose Mechanical Engineering at the best Technical University here (with possibility of taking Robotics as a specialization) as I believe it can give me a good background for the beginning. For now I decided for extramural type of studies - which means that I will be attending to classes only during the weekends. Since my business is not working yet this is the most reasonable option for me. Of course, if everything will be fine I will be able to switch to normal (daily) type after some time.

Please, let me know what do you honestly think about all of this. On one hand this is really what turns me on, on the other - I might be a bit old for such a move (should be 30 while obtaining BS degree). There is also another question related to job prospects.. Some people say that being a "specialist" in many different fields is not worth too much. And that you should become a MASTER only in one, narrow area. But that does not agree with definition of Systems Engineering which seems to quite popular discipline nowadays..

Thank you!
Electronics / Re: Good transmitter for RC/robot
« Last post by Chrabban on August 05, 2014, 02:08:04 AM »
tnx for the responce, i am just wondering if that will be do, i think i need more CH, i am thinking about getting a robot arm, video switch, and ir lights, also, might add something more :P is there someting like this that are for the 2,4ghz http://hackaday.com/2012/07/11/remote-control-with-an-xbee-and-a-propeller/ or that are modular, i also found this one http://www.jetimodel.com/en/katalog/Transmitters/@produkt/DS-14/ but i dont kno alot about it :P and it cost to mutch :/

is it hard to make DIY controler ?
Software / Re: Voice Recognition Car Codes
« Last post by APJ1234 on August 04, 2014, 06:44:47 PM »
I have follow every single steps on the link provided above and still got this error...

Build started 4.8.2014 at 20:37:13
avr-gcc -I"C:\My_Robots\Axon2_WebbotLib\..\WebbotLib"  -mmcu=atmega640 -Wall -gdwarf-2 -std=gnu99 -DF_CPU=16000000UL -O0 -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -MD -MP -MT Axon2_WebbotLib.o -MF dep/Axon2_WebbotLib.o.d  -c  ../Axon

../Axon2_WebbotLib.c:3:23: error: sys/axon2.h: No such file or directory
../Axon2_WebbotLib.c:5:22: error: hardware.h: No such file or directory
../Axon2_WebbotLib.c: In function 'appInitHardware':
../Axon2_WebbotLib.c:13: warning: implicit declaration of function 'uartInit'
../Axon2_WebbotLib.c:13: error: 'USB_UART' undeclared (first use in this function)
../Axon2_WebbotLib.c:13: error: (Each undeclared identifier is reported only once
../Axon2_WebbotLib.c:13: error: for each function it appears in.)
../Axon2_WebbotLib.c:13: error: 'USB_BAUD' undeclared (first use in this function)
../Axon2_WebbotLib.c:16: error: 'USB_ACTIVATE' undeclared (first use in this function)
../Axon2_WebbotLib.c:18: warning: implicit declaration of function 'led_off'
../Axon2_WebbotLib.c: In function 'appInitSoftware':
../Axon2_WebbotLib.c:25: warning: implicit declaration of function 'marqueeGetWriter'
../Axon2_WebbotLib.c:25: error: 'marquee' undeclared (first use in this function)
../Axon2_WebbotLib.c:25: warning: passing argument 1 of 'rprintfInit' makes pointer from integer without a cast
../Axon2_WebbotLib.c:26: warning: implicit declaration of function 'marqueeSetCharDelay'
../Axon2_WebbotLib.c:27: warning: implicit declaration of function 'marqueeSetEndDelay'
../Axon2_WebbotLib.c: In function 'appControl':
../Axon2_WebbotLib.c:36: warning: implicit declaration of function 'marqueeIsActive'
../Axon2_WebbotLib.c:36: error: 'marquee' undeclared (first use in this function)
make: *** [Axon2_WebbotLib.o] Error 1
Build failed with 9 errors and 7 warnings...

Electronics / Re: full vs half h-bridge
« Last post by waltr on August 04, 2014, 01:04:57 PM »
Two half-bridges is an H-bridge. The difference in terminology is that the two half-bridges are in two separate chips but are wired and controlled together as a single H-bridge. One reason to do this is power handling and heat dissipation.
Software / Re: using the iphone as an rc transmitter
« Last post by waltr on August 04, 2014, 01:01:23 PM »
Serial protocol over BlueTooth.
Electronics / Re: Good transmitter for RC/robot
« Last post by DiegoChavez on August 03, 2014, 07:22:19 PM »
I would go for spektrum the dx5 is the cheapest fir 5 channels ( 1 switch apart from the 2 joysticks) and there are plenty more, dx6, dx7, dx8, etc.
Software / Ecstatic to have finally programmed my Axon2
« Last post by shiggity on August 03, 2014, 07:00:01 PM »
Good news everyone!

I just uploaded 'hello world' to my Axon2 and it said hi back to me :)

I'm ecstatic about this because i've had my Axon2 since 2011 but have always had so much trouble with it I could never get anything going.  Just so much fuss with bootloaders and needing 32 bit, ugh! I have tried countless times previous, to no avail. It just wasn't as easy as the BASIC Stamp or Arduino for me.

Well some time has passed, Im a much better programmer (and perhaps a much better instruction follower) and I finally got it working! So psyched!

How'd I do it? (Just in case there's someone out there as clueless as I was)
I'm on a mac now, which brought it's own challenges - but it worked out in the end. To get around the bootloader & 32 bit windows require I bought a Pololu hardware programmer. I decided to listen to the experts here and now I'm using Webbotlib to make my files. Then, I use avrdude to push them over onto the Axon2 (thankfully crosspack makes it not too hard to setup avrdude on mac).

Anywho, just wanted to post. I'm super psyched to have gotten my dev environment setup here for the Axon2 and am looking forward to many projects in the future with it!

Take care all,

Electronics / Good transmitter for RC/robot
« Last post by Chrabban on August 03, 2014, 03:21:01 PM »
Hello everyone, i need some help to find a transmitter, i am going to build a Robot/RC vehicle, i am going to use it for FPV (with pan/tilt) and i want to be able to use some on/off switch, and be able to just push a button and it dose a sequense of things,

What controler is good for all this ? :) it whold be nice if i can change the frequency (change modual)
what is needed to make a Car/robot make a sequense ?

Tnx for all the help :)
Electronics / full vs half h-bridge
« Last post by Noobita on August 03, 2014, 09:37:52 AM »
Hi everyone,

I already searched the for this topic, but i didn't came across with nothing. SO, if you could explain me what are the diferences between a full and a half h-bridge and what are the adavantages of each one i would be grateful.

I know that a full h-bridge can drive a motor in either way and that a half h-bridge only can drive the same motor in one way. So, what are the advantages of using a half bridge? For example, the dynamixel uses two half h-bridge to drive the motor. Why not use a full h-bridge?

Misc / what are your biggest beefs with robotics companies today?
« Last post by shiggity on August 02, 2014, 12:01:52 PM »
I want to do some brainstorming about the robotics marketplace. I think this prompt would be a great way to learn from you guys, as I am fairly new to the industry and still getting a lay of the land.

Here I 'll start it off with my shortlist so far--
What are the top 10 biggest problems with the current robotics companies & robotics product offerings:
  • Most companies have their software locked up, and make it difficult for hobbyist to tinker and customize their robots.
  • Most companies patent their important bits (whether mechanical/electrical/software), so others cannot also use them, rather than open-sourcing them and helping the greater robotics community grow it leaves others trying to find ways around the patents.
  • Most companies make robots that don't do anything! (everyone seems to be making little educational kits that do only the most basic things like line following, light seeking, etc.) They don't do anything.
  • Most robots made by existing companies are not cost effective, they are not 'investments' (except for robot arms maybe in factories) but are more like 'toys'. You know you will 'lose money' on the toy, but thats okay because the purpose of the toy is to produce joy not to produce profit.
  • Most robotics companies today are not making actual autonomous machines, mostly just remote control devices, electrical components and mechanical parts (gears, enclosures, etc.).
etc.. etc..

Add your own list! Please! I would very much like to hear others opinions.
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