Show Posts
Pages: [1] 2 3 ... 113
1  Using Arduino / Installation & Troubleshooting / Re: Standalone atmega8 burning bootloader problem on: August 03, 2014, 02:09:11 pm
Quote
the atmega8 board does show up, but got this error:
Code:
avrdude: can't open input file D:\My Apps\arduino-1.0.5\hardware\arduino\bootloaders\atmega8\atmega8_8.hex: No such file or directory
avrdude: read from file 'D:\My Apps\arduino-1.0.5\hardware\arduino\bootloaders\atmega8\atmega8_8.hex' failed

and you simply do not have any bootloader file named atmega8_8.hex in your Arduino IDE distribution use a bootloader filename  that you actually have in the bootloaders folder.
2  Using Arduino / Installation & Troubleshooting / Re: Standalone atmega8 burning bootloader problem on: August 03, 2014, 02:04:50 pm
Quote
trying to burn it anyway gave me this error message:
Code:
avrdude: Expected signature for ATMEGA328P is 1E 95 0F
         Double check chip, or use -F to override this check.

my question: how to burn a bootloader to an atmega8 using uno with IDE 1.0.5 ?

Hmm.. that's because the avrdude's reading fuses of a Atmega8 while expecting ATmega328p, maybe you should change the chip thats selected in the IDE, I personally use the STK500 programmer along with winavr or programmers pad to load the hex's.
3  Using Arduino / Project Guidance / Re: using an acceleromter to detect wand movement is my theory correct? on: August 03, 2014, 01:50:35 pm
Im back after sunday night(although its still sunday night but done with the Purge 2 so..)
It's good that you got it but... I did say that Actually first of get a good serious Accelerometer and then pour your inputs into it, I did a lot of studying before I chose the accelerometer I have to work with, the one you have I had that on list but this one's takes a lot of power + is analog,  I would suggest an Accelerometer such as a MMA 8451/52.
ONe of the many positives in these i2c or serial based Accels are that there is one comm line for communication get all the axis data is respectvie registers and take what you want! plus portrait landscape and freefall register get fucntionality going fast.
4  Using Arduino / Project Guidance / Re: i am new to ARDUINO, guys please help on: August 03, 2014, 01:36:58 am
I think this guy isn't sure what he actually wants.
Also asking a question is also an art ,you have to put it the right way.
5  Using Arduino / Project Guidance / Re: using an acceleromter to detect wand movement is my theory correct? on: August 02, 2014, 11:03:52 am
Quote
i suppose the √óbest way is to record data from the three axis whilst waving the wand around and look at the data and see if it makes sense.

We do not need to load the MCU with extra axis data and commence on some conditions the reason is that the only time other axis would be useful is when you want to note that whether the waving hand or wand is tilted backwards or forwards which I think isn't needed by you.

The easiest and fastest but somewhat inaccurate way to implement what you are talking about is to use the Portrait and Landscape register data which is available in most of the accelerometers out there, so if its like potrait and goes to landscape right then it means 50% of the wave thats one way is completed ,so something like that added with some additional tricky coding may help recognizing the wave in the correct direction the easy and fast way.
6  Using Arduino / Project Guidance / Re: using an acceleromter to detect wand movement is my theory correct? on: August 02, 2014, 10:47:18 am
Off course yeah, The tilt on a single axis can work forya, I think when you'll wave the wand or hand I mean make waving movements on one side, the accelerometer is going to repeat the movement on that side more than one time and as such I think you can code to recognize such multiple travelling movements to a single side.
7  Using Arduino / Project Guidance / Re: using an acceleromter to detect wand movement is my theory correct? on: August 02, 2014, 10:13:10 am
I think you need an mpu, to precisely detec motion movements and map them to your animation on the POV.
8  Using Arduino / Project Guidance / Re: i am new to ARDUINO, guys please help on: August 02, 2014, 10:07:51 am
Arduino is C/C++ wrapped up with wiring libraries just workout your code in IF or Switch conditions as you would do with any C/C++ software programme and then use wiring methods of pinMode() to set the pin mode to output or input and use digitalWrite to control the outputs!

Read the reference section on how to use, try to write the code and test it and if its doesn't work post here, people will workout the problem.
9  Community / Gigs and Collaborations / Re: Arduino ethernet + sdcard+web interface on: July 31, 2014, 10:56:09 am
Quote
Wow, I'm amazed, I didn't realise my programming skills were in such demand.

Every now and then you'll get such folks, just be a frequent at the forum!
10  Community / Exhibition / Gallery / UVsensor Android App! (Sensor code available and App. free!) on: July 31, 2014, 10:52:31 am

See following for details:

https://play.google.com/store/apps/details?id=com.winacro.UVsense
11  Using Arduino / Motors, Mechanics, and Power / Re: Nerf Rapidstrike: MOSFET + PWM + Motor braking on: July 31, 2014, 02:52:13 am
Well okay it's kind of a beefy one and I don't know your motors depends on the stall current of the motor but if you're that lazy then maybr just go with this.
12  Using Arduino / Motors, Mechanics, and Power / Re: Nerf Rapidstrike: MOSFET + PWM + Motor braking on: July 30, 2014, 11:18:24 pm
Quote
This is what I am after; but is there a way to do this but with just N channel MOSFETs?

Well you need to workout the circuit reverse so P's are needed and also you can use an H-Bridge.
13  Using Arduino / Motors, Mechanics, and Power / Re: Nerf Rapidstrike: MOSFET + PWM + Motor braking on: July 30, 2014, 12:12:38 pm
OKay I think I got down to the nerve of your problem, you need 2 MOSFETS one would be the motor driver doing the half-bridge function as you already have it right now and the other MOSFET actually is controlling the GnD of your motor letting you break the system as per will.

whats more  smiley-eek-blue you may also do PWN on the Gnd side MOSFET to control the amount of breaking you do on the motor!

here's an illustration >> http://hackaday.com/2011/10/28/motor-drivers-half-h-bridge-with-brake-and-more/
14  Using Arduino / Motors, Mechanics, and Power / Re: Nerf Rapidstrike: MOSFET + PWM + Motor braking on: July 30, 2014, 11:55:11 am
Quote
I want to know is how to use a MOSFET in a circuit and still be able to motor brake as it is essential for stopping the pusher motor. Every guide on MOSFETs I have seen has a diode that seems to prevent motor braking to protect the MOSFET.

Okay so show us the connections how you are putting the diode and other elements together.
15  Using Arduino / Motors, Mechanics, and Power / Re: How to use a motor practically? on: July 30, 2014, 11:39:03 am
I addition to my sparkFun link please also look into seeedstudio folks and makeBlock kit.
Pages: [1] 2 3 ... 113