my first robot
@ April 24, 2009
navigate around using sharp ir
Cost to build:
$104
- Actuators / output devices: 1:58 ratio twin tamiya gear motor box
- Control method: autonomous
- CPU: picaxe 18x
- Power source: 4 AA batteries
- Programming language: Picaxe basic
- Sensors / input devices: Sharp IR
- Target environment: inside
| Attachment | Size |
|---|---|
| DSC00573.JPG | 152.63 KB |
| DSC00574.JPG | 146.35 KB |
| DSC00575.JPG | 147.48 KB |
| DSC00576.JPG | 151.48 KB |
| DSC00577.JPG | 152.55 KB |
| DSC00578.JPG | 147.1 KB |
| DSC00579.JPG | 149.32 KB |
my robot is using the picaxe18 power board from sparkfun.com. he turns both ways and decides which way is better to go and goes that way
here is my code:
symbol dangerlevel= 84
Main:
readadc 0,b0
if b0<dangerlevel then
low 4: high 5: low 6: high 7
goto main
else
label_1: readadc 0,b0
end if
high 4: low 5: high 6: low 7
if b0>75 then
goto label_1
else
low 4: high 5: high 6: low 7
pause 500
readadc 0, b0
high 4:low 5: low 6: high 7
pause 1000
readadc 0,b1
low 4: high 5: high 6: low 7
pause 500
end if
if b0<b1 then
low 4: high 5: high 6: low 7
pause 500
goto main
else
high 4:low 5: low 6: high 7
pause 500
end if
goto main
@ Fri, 2010-02-26 16:59
I made such robot. And i use
I made such robot. And i use this code. But robot goes forward and back.
I correctly connected details?
@ Fri, 2010-02-26 21:59
looks correctly wired to me.
@ Sun, 2010-02-07 20:01
tracks
@ Fri, 2009-12-04 06:36
so, how to make an external
@ Sat, 2009-12-05 01:09
http://letsmakerobots.com/nod
@ Thu, 2009-12-03 16:15
patrickmccabe, you used
@ Thu, 2009-12-03 16:48
Take a look at the datasheet
Take a look at the datasheet for the standard project board.
Page 1 explains the difference.
"The standard board uses a darlington driver IC to provide 8 digital (on/off) outputs. Each output is rated at 800mA."
"The high power board uses 4 FETs to provide 4 high power digital outputs (rated at 1.5A each), and the option of a L293D motor driver IC to provide 2 reversible motor outputs, rated at 1A each."
If you have the standard board, you have less power per output. You also lack the option for a built-in motor driver chip. So you could build or buy an external board for motor control. Or you could go with servos modified for continuous rotation, which can be driven from a single output pin. You can drive these from the V2 supply up to 6V, though I imagine you are still limited to 800mA each. If you need more power, you could use the outputs to drive relays, which could switch higher power for you.
Good luck!
@ Thu, 2009-12-03 20:00
yup. This being my first
@ Tue, 2009-10-27 11:27
i mean if you move it with a
@ Tue, 2009-10-27 21:39
no it does not have a remote
@ Wed, 2009-10-28 11:13
ok thanks
@ Wed, 2009-10-28 20:28
Hey!
You stole my alias! Or perhaps a kindred spirit?!
Regards
Bender unit Aniss1001 :)
@ Sun, 2009-09-13 06:19
I like the way it looks
@ Sun, 2009-09-13 18:44
exactly, i was on a budget
@ Sun, 2009-09-13 02:49
yup im using the first
@ Sat, 2009-09-12 06:29
Sharp IR sensor
I think he is using the GP2Y0A21YK / GP2D12 (they are pretty similar) http://www.sparkfun.com/commerce/product_info.php?products_id=242 & http://www.lynxmotion.com/Product.aspx?productID=260&CategoryID=8 That would be one of the most common GP2D returning an analog voltage. My other guess would be the digital version which is less commonly used.
Awesome bot btw, I noticed that there was no power switch (unless i missed it) do you have to stick the battery in every time?
@ Fri, 2009-09-11 20:23
I know you are using a Sharp
@ Sun, 2009-06-14 20:11
this robot you make it
@ Wed, 2009-06-17 05:12
it moves alone. It makes all
@ Sun, 2009-06-14 18:28
Track Tension
Nice build and pretty fast speed i must add...
How did you get the right tension on the tracks ?.
@ Wed, 2009-06-17 05:11
I am not too sure what you
@ Fri, 2009-04-24 21:46
yeah, a lot of people use
yeah, a lot of people use these gear boxes and tracks, their great and easy to use. my robot is a little loud probably because he goes fast.
@ Fri, 2009-04-24 21:39
When I first saw your robot
When I first saw your robot I thought it was a picture of mine take at another angle. then I realized it wasnt mine it just looked a lot alike.
The computer I'm on doesnt have sound so I cant tell if its as loud as mine. we both used the same geared motor set and tracks I think. Mine is on the loud side. I wish mine drove straight. I have to correct for a slower motor using pulse width modulaton.
@ Sat, 2009-04-25 00:25
here, might help,