Here is an alternative gear
Here is an alternative gear motor that may work better for you. The link is from a German distributor of Pololu, and very good robotics company.
They also sell wheels that will mate to the 3mm shaft of the above motor.
http://www.lipoly.de/index.php?main_page=index&cPath=880_2630_2692_2757_2781
Hey thank you very much!This
Hey thank you very much!
This site, you recommended is pretty cool and I think I’m going to check out an engine and wheels from there before I later use this motor I bought previously in some way.
You’re right, it says 4V, I totally forgot that and later I just calculated the overall voltage. Silly me. I tried the motor with my 8 batteries directly to check how t works, and it was pretty slow. Also, I meassured the voltage of the battery set and it was not 12 but 10 Volt, so I guess those (newly bought) batteries are flawed anyway and already not at maximum power.
I read in some forums that it is kind of a common choice for robots, but for bigger projects I guess.
Thanks for your tips! After all I’m really exited to be a part of this community and I think that I overcome those difficulties soon.
shield and sensors
Hi all! 
I´d like to ask if i can use this one instead of instant robot shield: http://www.rlx.sk/product.php?id_product=683
and this one instead of sensors: http://www.rlx.sk/product.php?id_product=393
I´m asking this because the shipping is huge if i order from the webshops mentioned on the “Start here” page
Thanks your answers.
The shield you linked to is
The shield you linked to is not as full featured as the Instant Robot Shield. It will handle the task of driving the motors but you’ll have to run through the code to make sure the pins are correct for the substitute.
The ultrasonic sensor is not really a good sensor for a starter. You’ll need to generate your own 40KHz signal for the transmitter and it will use an analog-to-digital capable pin for the input as well. I wouldn’t recommend it.
Thank you!
Thank you!
My views on a tip-
Don’t buy “any” cheap soldering iron. Buy a “decent” cheap soldering iron. This article will be read by everyone from young kids to adults and I don’t want anyone to burn their fingers. As to what’s the difference between the 2 irons- Take a look at this vs this. While mine costs just INR 35 ($0.6368), it’ll be loads better if someone buys that $3 iron. I regreted buying that iron from the moment I handed over the money…
im building a mini start
im building a mini start here 3.0
Remote control
Hi there,
My knowledge of robots can basically be summarised by the content of your Start Here v2.0 tutorial. After reading this beta tutorial I have some questions… Firstly why is the shield needed/used in this version but not v2.0? Secondly what kind of things do you need to make a setup like this remote control, for example if I wanted to make a relatively simple RC car?
Thanks
Battery holder
Hi.
What can I do if my battery holder don’t have wire (red / black) it just have press-stud terminator.
You mean something like
You mean something like this?
You need to add something like this:
Re: You mean something like
Hi.
Could be, I explain my idea (lines down)… I’m waiting for testing to see results.
Thks a lot.
Will this robot have a start
Will this robot have a start here v2 and v3 (or somethin like that?) because i thought that bernard the cup stacker was very interesting? or some ideas to kickstart others? or maybe it doesn’t matter
I think it will not,
I think it will not, no.
Other things will happen though - but too early to be precise, sorry.
ok, thank you.
ok, thank you.
Arduino Instant Robot Shield compatability
Hi
Great job and demo. I ma 71 and have decided to get involved with programming and robots. I been playing with Aruino Uno and got tired of lighting. blinking LEDs. LMR 2 robot artical claimed the instant robot shield eas compatable with Arduino. Based on your recommendation I purchased one and assemblyed it as per your instructions. After several trials I could not get it drive motors. I can make it blink LEDs , drive hobby servos. But cannot make motors run. I contacted PICAXE and asked for help. I got the following answer back from a John Brown:
As a company producing PICAXE products we are not familiar with or able to offer support for the Arduino. The Instant Robot Shield should however be compatible with Arduino and other products which use the shield format.
I believe the shield is based on a design which was developed by a member of the Let’s Make Robots community and that community is probably the best place to seek help from for using the shield with Arduino - or letsmakerobots.com
I went back and studied your PICAXe code and tried several programs but none worked. The motors both work when I apply voltage.
I went to Arduino web site to seek help.
I think there may be a problem with PIN 9 & 10. Arduino claims that when the servo library is included it eliminates the ability to have PWM on Pins 9 and 10. (see below)
Servo library (http://arduino.cc/en/Reference/Servo)
This library allows an Arduino board to control RC (hobby) servo motors. Servos have integrated gears and a shaft that can be precisely controlled. Standard servos allow the shaft to be positioned at various angles, usually between 0 and 180 degrees. Continuous rotation servos allow the rotation of the shaft to be set to various speeds.The Servo library supports up to 12 motors on most Arduino boards and 48 on the Arduino Mega. On boards other than the Mega, use of the library disables analogWrite() (PWM) functionality on pins 9 and 10, whether or not there is a Servo on those pins. On the Mega, up to 12 servos can be used without interfering with PWM functionality; use of 12 to 23 motors will disable PWM on pins 11 and 12.
According to your manual pg 4 pins S.9 and S.10 require PWM to turn on Motor A and B. I think this may be why I have not had success getting a servo motor to operate. I am not into programming enough to understand how to get your AXE480 using Arduino Code to operate a continuous servomotor.
I am sure there must someone in LBR may have checked out the compatibility of the instant robot shield AXE480 with Arduino UNO. I would appreciate assistance. Can someone suggest how I can > enable Motor A and B using Arduino UNO and AXE480.
Ken Purzycki
