Show Posts
Pages: 1 ... 89 90 [91] 92 93 ... 114
1351  Using Arduino / Programming Questions / Re: Servos and ADJDS-311 on: April 15, 2012, 03:17:27 am
Hi,

Four AA batteries should be fine if they are powering the servos and you have something else powering the Arduino, is this what you are doing amd ae the grounds connected between the two power supplies ?

If not read the two links in my signature for whats happening in your project and how to fix it.

Duane B

rcarduino.blogspot.com
1352  Using Arduino / Programming Questions / Re: What is used instead of BYTE? on: April 14, 2012, 04:39:44 pm
Hi,

 try short or uint8_t

Duane B

rcarduino.blogspot.com
1353  Using Arduino / Project Guidance / Re: PWM, LFO and Osc, adjustable with LCD Display the several POT values on: April 14, 2012, 01:43:58 pm
Hi,
   If your going to use an Arduino, you might as well get it to generate the sound in the first place.

Why not just build an Audino, its nothing more than 5 pots and an Arduino.

I have added a simple amplifier using a LM386 to drive a PC Speaker from mine.

Search for Audino on your favorite video site for a few examples.

Duane B

rcarduino.blogspot.com
1354  Using Arduino / Motors, Mechanics, and Power / Re: Problems with arduino power input & servo motors on: April 13, 2012, 04:21:36 am
Hi,

   Check out the two links in my signature for an idea of whats happening in your project, why you need extra power and how to supply it.

Duane B

rcarduino.blogspot.com
1355  Using Arduino / General Electronics / Re: battery 9V on: April 13, 2012, 04:15:04 am
Hi,
   Check the two links in my signature for an idea of whats happening and how to get around it. The examples use servos but apply to power orientated components in general.

Duane B

rcarduino.blogspot.com
1356  Using Arduino / Project Guidance / Re: Make a RC car run a whole race track pre-programmed on: April 13, 2012, 04:10:00 am
Hi,
   If you have a slot car track, try it there first, you only have the throttle to deal with as the track will steer the car. Its a lot harder than it looks.

Duane B

rcarduino.blogspot.com
1357  General Category / General Discussion / Re: If a program could program itself?.... (AI) on: April 12, 2012, 04:26:55 am
Hi,

    Did anyone check out the link to genetic programming, it might never fly a jumbo but its a surprisingly effective program generator in some domains.

Duane B

rcarduino.blogspot.com
1358  General Category / General Discussion / Re: If a program could program itself?.... (AI) on: April 11, 2012, 04:12:56 pm
Hi,
   Way back when I was very excited by genetic programming as written about by this guy in his book genetic programming -

http://www.genetic-programming.com/johnkoza.html

I wrote a simple interpreter for a lisp like language that simulated autonomous agents ran in a simulated environment, the langauge descibed the agents behaviour which survival and breeding opportunities depended on. The population should have evolved one or more effective programs for survival within the environment, it was very exciting at the time. The limitation was the relative simplicity of the environments I was able to create before completing my studies and starting work.

Thoroughly enjoyed Koza's book and all the projects I have done in genetic algorithms and genetic programming, it was a really exciting area in 1992.

Duane B

rcarduino.blogspot.com
1359  Using Arduino / Motors, Mechanics, and Power / Re: Controlling 3 Six Volt DC Motors with the Motor Shield on: April 10, 2012, 01:58:25 pm
Hi,
   Good AA batteries are surprisingly strong, I use the rechargeable ones in one of my 1/18 th scale race cars. Try ones designed for cameras and you may be surprised how good they are.

   If your project is heavy or has a lot of drag you may need to skip the AA batteries an go straight for hobby batteries. Look at LIPO batteries, they are more expensive and need a computerised charger that will also cost around 40 dollars but they are very powerful and very light.

   As AAs are so cheap to try, try them first.

Duane B.

rcarduino.blogspot.com
1360  Using Arduino / Motors, Mechanics, and Power / Re: Controlling 3 Six Volt DC Motors with the Motor Shield on: April 10, 2012, 01:21:30 pm
Hi,
   Separate power is a very good idea. You can get 7.2 volts from 6 reachargeable AA batteries, they are 1.2 volts each. While you need 7 volts of more for the regulator on an Arduino board to be able to output 5 volts, I am guessing that is you use separate power you could drive the motor shield directly with 4*1.5 non reachargeable AA batteries for six volts.

You don't mention the shield your using so I cant be sure. If you so use separate power, don't forget to connect the grounds between the two power sources and watch the links in my signature for why you need separate power in the first place.

Duane B

rcarduino.blogspot.com
1361  Using Arduino / Motors, Mechanics, and Power / Re: Help with powering motors with pwm's and drivers. on: April 10, 2012, 01:17:01 pm
Hi,
   I am not sure from your post whether the 5*1.5 batteries are powering both the Arduino and the motors, if so read the links in my signature and consider separate power for the Arduino and motors.

Duane B

rcarduino.blogspot.com
1362  Using Arduino / Microcontrollers / Re: Arduino vs standalone microcotroller programming on: April 10, 2012, 01:14:12 pm
Cut a long story short -

There is an awful lot you can do with Arduino
The community support is excellent
There are lots of off the shelf libraries, break out boards and shields that can get you deep into your chosen project fast

Its easy to build your own standalone and cheap - less than 10 USD.

Its a very good feeling the first few times you build a standalone Arduino for a project, I have two on my desk now, one in an Audino Synthesizer that took a day to build and one in a RC Car/Go Kart Lap Timer, both build from just the chip and supporting components, not a ready built Arduino.

Duane B

rcarduino.blogspot.com
1363  Using Arduino / Programming Questions / Re: Ethernet Shield, Servo control with textfield in webpage on: April 10, 2012, 01:04:58 pm
And to preempt the next problem - As you are running a shield and a servo, you should consider separate power as this will likely cause you problems soon if not already.

See the links in my signature for a demonstration why

Duane B

rcarduino.blogspot.com
1364  Using Arduino / Project Guidance / Re: First Project: Racing Tracker on: April 10, 2012, 12:57:19 pm
Hi,
   I am using IR to track lap times however this is for grip orientated racing where the car will be passing the at a more or less perpendicular angle, are there sections of track where the car will be hooked up and pointing straight ahead or will it always be passing with some degree of slip angle ?

  I have done most of the things you want to do and its all very easily achieved with Arduino and readily available add ons -

Data logging - add accelerometer and SD Card
Lap Timing - I am using IR, others have used wire loops etc.

Have a look at my blog, most of it relates to RC Cars, but the hardware, data and software is the same regardless of whether its 1:10 or 1:1 scale. You should be able to find a bit on lap timing, data logging etc.

Duane B

rcarduino.blogspot.com





1365  Using Arduino / Motors, Mechanics, and Power / Re: Missing Timer Input Pins?%!&# (swearing omitted) on: April 09, 2012, 11:56:59 pm
Hi,
    I don't know a whole lot about hall effect sensors, but I have an RC Car on the table next to me, where on earth are you planning on mounting the sensor ? wont it be saturated by the motor magnets ? and wont it upset the balance of the motor ?

My suggestion - find an easily accessible slow moving gear or shaft and count the revs with light.

As others have suggested, any interrupt pin will do for this.

Duane B

rcarduino.blogspot.com
Pages: 1 ... 89 90 [91] 92 93 ... 114