I make nice robot to play with. Too bad he's retarded...:(
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why can’t it move?, little
why can’t it move?, little bit more info please 
I wish I knew why, I
I wish I knew why, I connected all the wires correctly and input the correct programming but the motors(wheels) will not turn!?! Any idea’s?
check battery wirestry only
this might help
I had this problem too… check ur little bridge up by the top corner of the board. it connects to two pins. Try swithcing them around. hope it helps
You mean those four little
You mean those four little ones grouped together?
Movement
The wires are fine, soldering and everything, the camera works simply put, the wheels are UNRESPONSIVE! The code I am using is the one form ‘My First Robot’. I just do not know…
Well… if urs is a 28 pin or whatever
if it is a 28 pin… or i think that is what fritz used then it is the three pins behind the power wires. V and G. flip that bridge around.
If you have a multimeter,
you can check to make sure that you are getting signals to and from where they should be going. Also, make sure you are getting 5 volts to the PICAXE.
First, check the PICAXE pins to make sure you are getting a HIGH where you think you should be getting a HIGH. Follow that to the motor driver chip, L293D I believe. See that you are getting HIGHs and LOWs where they are needed. See that you are getting HIGHs and LOWs on the outputs to the motors.
Make sure that your L293D is plugged in in the correct orientation.
Life
Ok. First off thanks for the help, the motors are running fine now, but I am having some troubles with the code. First thing, when moving during ‘no danger’ he only scoots forward an inch or so. How can I tell him to go further? Also, for some reason when deciding ‘Which way is better’ he acts rather sporadic and only seems to notice the ‘wall’ once, then proceeds to charge it at an inch a minute.
Re-write the whole program
Re-write the whole program all by yourself, know what each line means and does, check the sensor’s sensiblity by using only the sensor program and change your dangerlevel according to your sensor’s sensibility. check if all solders are done properly any loose solders will result in such “sporadic” movements
All the best
**You could always **
post your code, if you would like some of the people here to look it over.
ya actually this is a better
ya actually this is a better idea
code
I know I have correctly soldered for that was my first problem with the motors, and I have a solid dangerlevel for my system. I have been running through the code so much I can no longer make him run a straight line… so here it is
symbol dangerlevel = 140
symbol turn = 300
symbol servo_turn = 700
main:
readadc 1, b1
if b1 < dangerlevel then
gosub nodanger
else
gosub whichway
end if
goto main
nodanger:
low 4 : high 5 : low 6 : high 7
return
whichway:
gosub totalhalt
gosub lturn
pause servo_turn
readadc 1, b1
gosub totalhalt
gosub rturn
pause servo_turn
readadc 1, b2
gosub totalhalt
if b1>b2 then
gosub body_lturn
else
gosub body_rturn
end if
return
body_lturn:
high 4 : low 5 : low 6 : high 7
pause turn : gosub totalhalt
return
body_rturn:
low 4 : high 5 : high 6 : low 7
pause turn : gosub totalhalt
return
rturn:
servo 0, 100
return
lturn:
servo 0, 200
return
totalhalt:
low 4 : high 5 : low 6 : high 7
servo 0, 150
wait 1
return
since you are having
since you are having problems with your wheels/motors, try just
low 4 : high 5 : low 6 : high 7
and see if the wheels move, if they do move then try changing the value of dangerlevel to a small one like 100
For grins
could you look over this code?
symbol dangerlevel = 140
symbol turn = 300
symbol servo_turn = 700
'new symbols
symbol scenter = 150 'adjust to set servo center
symbol sright = 100 'adjust to set servo right
symbol sleft = 200 'adjust to set servo left
symbol lmbp = 4 'left motor back pin
symbol lmfp = 5 'left motor forward pin
symbol rmbp = 6 'right motor back pin
symbol rmfp = 7 'right motor forward pin
symbol ir_sensor = 1 'analog input pin
symbol sensor_servo = 0 'ir_sensor servo pin
symbol dist_front = b1
symbol dist_left = b2
symbol dist_right = b3
main:
readadc ir_sensor, dist_front
if dist_front < dangerlevel then
gosub nodanger
else
gosub whichway
end if
goto main
nodanger:
'changed to increase readability
'low 4 : high 5 : low 6 : high 7
gosub leftmotorforward
gosub rightmotorforward
return
whichway:
gosub totalhalt
gosub lturn
'pause servo_turn
'readadc 1, b1
gosub totalhalt
gosub rturn
'pause servo_turn
'readadc 1, b2
gosub totalhalt
if dist_left > dist_right then
gosub body_lturn
else
gosub body_rturn
end if
return
body_lturn:
'high 4 : low 5 : low 6 : high 7
gosub leftmotorbackward
gosub rightmotorforward
pause turn
gosub totalhalt
return
body_rturn:
'low 4 : high 5 : high 6 : low 7
gosub leftmotorforward
gosub rightmotorbackward
pause turn
gosub totalhalt
return
rturn:
servo sensor_servo, sright
pause servo_turn
readadc ir_sensor, dist_right
return
lturn:
servo sensor_servo, sleft
pause servo_turn
readadc ir_sensor, dist_left
return
totalhalt:
'changed to help readability
'low 4 : high 5 : low 6 : high 7 'this will make the motors go forward
gosub leftmotorstop
gosub rightmotorstop
servo sensor_servo, scenter
wait 1
return
leftmotorforward:
low lmbp
high lmfp
return
leftmotorbackward:
high lmbp
low lmfp
return
leftmotorstop:
high lmbp
high lmfp
return
rightmotorforward:
low rmbp
high rmfp
return
rightmotorbackward:
high rmbp
low rmfp
return
rightmotorstop:
high rmbp
high rmfp
return
After some thought,
I now have to wonder if your totalhalt subroutine was not the problem. What I wrote up has more code, but, does the same as your code.
