stamp1 and model train
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Posts: 46,084
what im trying to do is
read a high on pin 0 then pwm the moter clockwise via H-Bridge
read a high on pin 1 then pwm then motor anticlock via H-Bridge
There must be a better way ????
EG.
symbol fspeed =w1
symbol bspeed =w2
let dirs = %11110000
let pins = %00000000
fspeed = 0
bspeed = 0
start:
if pin0 = 1 then forw
if pin1 = 1 then back
if pin2 = 1 then trainstop
pwm 4,fspeed,1
pwm 5,bspeed,1
goto start
forw:
fspeed = fspeed +1
if fspeed =>255 then ffull
bspeed = 0
pause 50
goto start
back:
bspeed = bspeed +1
if bspeed =>255 then bfull
fspeed = 0
pause 50
goto start
trainstop:
fspeed = 0
bspeed = 0
pin4=0
pin5=0
goto start
ffull:
fspeed = 255
bspeed=0
goto start
bfull:
bspeed=255
fspeed=0
goto start
read a high on pin 0 then pwm the moter clockwise via H-Bridge
read a high on pin 1 then pwm then motor anticlock via H-Bridge
There must be a better way ????
EG.
symbol fspeed =w1
symbol bspeed =w2
let dirs = %11110000
let pins = %00000000
fspeed = 0
bspeed = 0
start:
if pin0 = 1 then forw
if pin1 = 1 then back
if pin2 = 1 then trainstop
pwm 4,fspeed,1
pwm 5,bspeed,1
goto start
forw:
fspeed = fspeed +1
if fspeed =>255 then ffull
bspeed = 0
pause 50
goto start
back:
bspeed = bspeed +1
if bspeed =>255 then bfull
fspeed = 0
pause 50
goto start
trainstop:
fspeed = 0
bspeed = 0
pin4=0
pin5=0
goto start
ffull:
fspeed = 255
bspeed=0
goto start
bfull:
bspeed=255
fspeed=0
goto start
Comments
I use a motorcontroller which is used for truckmodels or small ships. It has
a H-bridge in it and the input is the same pulse input as for a standard
servomotor for aircraftmodels etc. The controller can do max ca. 15V at 1
amp, the peakload is 2 amps.
Stampcontrol is: pulsout .... ms and off you go!!!!!
That's all.
I hope y can find something like this in your neighbourhood.
Klaus
Oorspronkelijk bericht
Van: Andy Quirot [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=APpfBvcIBefp4XBIXsd87FosQiPecvllNE59VDQj0vg4n8B78sdyXkloa5XQAbEejLTuvt--ggy40NBFTAc]andyquirot1@h...[/url
Verzonden: 03 09 2003 20:13
Aan: basicstamps@yahoogroups.com
Onderwerp: [noparse][[/noparse]basicstamps] re stamp1 and model train
what im trying to do is
read a high on pin 0 then pwm the moter clockwise via H-Bridge
read a high on pin 1 then pwm then motor anticlock via H-Bridge
There must be a better way ????
EG.
symbol fspeed =w1
symbol bspeed =w2
let dirs = %11110000
let pins = %00000000
fspeed = 0
bspeed = 0
start:
if pin0 = 1 then forw
if pin1 = 1 then back
if pin2 = 1 then trainstop
pwm 4,fspeed,1
pwm 5,bspeed,1
goto start
forw:
fspeed = fspeed +1
if fspeed =>255 then ffull
bspeed = 0
pause 50
goto start
back:
bspeed = bspeed +1
if bspeed =>255 then bfull
fspeed = 0
pause 50
goto start
trainstop:
fspeed = 0
bspeed = 0
pin4=0
pin5=0
goto start
ffull:
fspeed = 255
bspeed=0
goto start
bfull:
bspeed=255
fspeed=0
goto start
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manual? One of the "Nuts and Volts of Basic Stamps" volumes?
"Microcontroller Projects Using the BASIC Stamp"?) had a very interesting
story describing how to use a Basic Stamp and an LCD display and c couple
of buttons to control three z scale model trains. The article was
WONDERFUL as it went over the design process, the limitations of hardware
and then provided the finished code and schematics so anyone could
replicate the results.
I just can't remember *which* book had the description! I *think* it was
maybe Al Williams that wrote the article? Maybe Jon? Dang it was a good
article, wish I could give the source. Jon, Al? can you help jog my
memory?
[noparse]:)[/noparse]
Vern
--
Vern Graner CNE/CNA/SSE | "If the network is down, then you're
Senior Systems Engineer | obviously incompetent so why are we
Texas Information Services | paying you? Of course, if the network
vern@t... www.txis.com | is up, then we obviously don't need
Cell 507-7851 Desk 328-8947 | you, so why are we paying you?" VLG
Andy Quirot said:
> what im trying to do is
> read a high on pin 0 then pwm the moter clockwise via H-Bridge
> read a high on pin 1 then pwm then motor anticlock via H-Bridge
> There must be a better way ????
> EG.
> symbol fspeed =w1
> symbol bspeed =w2
> let dirs = %11110000
> let pins = %00000000
> fspeed = 0
> bspeed = 0
>
> start:
> if pin0 = 1 then forw
> if pin1 = 1 then back
> if pin2 = 1 then trainstop
> pwm 4,fspeed,1
> pwm 5,bspeed,1
> goto start
>
> forw:
> fspeed = fspeed +1
> if fspeed =>255 then ffull
> bspeed = 0
> pause 50
> goto start
>
> back:
> bspeed = bspeed +1
> if bspeed =>255 then bfull
> fspeed = 0
> pause 50
> goto start
>
> trainstop:
> fspeed = 0
> bspeed = 0
> pin4=0
> pin5=0
> goto start
>
> ffull:
> fspeed = 255
> bspeed=0
> goto start
>
> bfull:
> bspeed=255
> fspeed=0
> goto start
>
>
>
>
>
> To UNSUBSCRIBE, just send mail to:
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>
>
>
I was hoping Al or Jon might respond to this one...? Do either of you
remember the article on controlling a set of three model trains with a
BS1?
Vernon Graner said:
> If I recall, one of the first Basic Stamp books I read (The actual BS
> manual? One of the "Nuts and Volts of Basic Stamps" volumes?
> "Microcontroller Projects Using the BASIC Stamp"?) had a very interesting
> story describing how to use a Basic Stamp and an LCD display and c couple
> of buttons to control three z scale model trains. The article was
> WONDERFUL as it went over the design process, the limitations of hardware
> and then provided the finished code and schematics so anyone could
> replicate the results.
>
> I just can't remember *which* book had the description! I *think* it was
> maybe Al Williams that wrote the article? Maybe Jon? Dang it was a good
> article, wish I could give the source. Jon, Al? can you help jog my
> memory?
>
> [noparse]:)[/noparse]
>
> Vern
>
> Andy Quirot said:
>> what im trying to do is
>> read a high on pin 0 then pwm the moter clockwise via H-Bridge
>> read a high on pin 1 then pwm then motor anticlock via H-Bridge
>> There must be a better way ????
>> EG.
>> symbol fspeed =w1
>> symbol bspeed =w2
>> let dirs = %11110000
>> let pins = %00000000
>> fspeed = 0
>> bspeed = 0
>>
>> start:
>> if pin0 = 1 then forw
>> if pin1 = 1 then back
>> if pin2 = 1 then trainstop
>> pwm 4,fspeed,1
>> pwm 5,bspeed,1
>> goto start
>>
>> forw:
>> fspeed = fspeed +1
>> if fspeed =>255 then ffull
>> bspeed = 0
>> pause 50
>> goto start
>>
>> back:
>> bspeed = bspeed +1
>> if bspeed =>255 then bfull
>> fspeed = 0
>> pause 50
>> goto start
>>
>> trainstop:
>> fspeed = 0
>> bspeed = 0
>> pin4=0
>> pin5=0
>> goto start
>>
>> ffull:
>> fspeed = 255
>> bspeed=0
>> goto start
>>
>> bfull:
>> bspeed=255
>> fspeed=0
>> goto start
Al Williams
AWC
* NEW: PAK-VIa - Read PS/2 keyboards or mice -- double the buffer, lower
current consumption.
http://www.al-williams.com/awce/pak6.htm
>
Original Message
> From: Vernon Graner [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=Oeomsro7lj28MfCXjwsh7IaQa_PNuk1VTIvwpB1CONhd8W9iA1NiHnK11tIPijeOEK-zNg]vern@t...[/url
> Sent: Thursday, September 04, 2003 5:13 PM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse][[/noparse]basicstamps] re stamp1 and model train
>
>
> hmmm.. are my posts even getting through to the list?
>
> I was hoping Al or Jon might respond to this one...? Do
> either of you remember the article on controlling a set of
> three model trains with a BS1?
>
> Vernon Graner said:
> > If I recall, one of the first Basic Stamp books I read (The
> actual BS
> > manual? One of the "Nuts and Volts of Basic Stamps" volumes?
> > "Microcontroller Projects Using the BASIC Stamp"?) had a very
> > interesting story describing how to use a Basic Stamp and an LCD
> > display and c couple of buttons to control three z scale
> model trains.
> > The article was WONDERFUL as it went over the design process, the
> > limitations of hardware and then provided the finished code and
> > schematics so anyone could replicate the results.
> >
> > I just can't remember *which* book had the description! I
> *think* it
> > was maybe Al Williams that wrote the article? Maybe Jon?
> Dang it was a
> > good article, wish I could give the source. Jon, Al? can
> you help jog
> > my memory?
> >
> > [noparse]:)[/noparse]
> >
> > Vern
> >
> > Andy Quirot said:
> >> what im trying to do is
> >> read a high on pin 0 then pwm the moter clockwise via
> H-Bridge read a
> >> high on pin 1 then pwm then motor anticlock via H-Bridge
> There must
> >> be a better way ???? EG.
> >> symbol fspeed =w1
> >> symbol bspeed =w2
> >> let dirs = %11110000
> >> let pins = %00000000
> >> fspeed = 0
> >> bspeed = 0
> >>
> >> start:
> >> if pin0 = 1 then forw
> >> if pin1 = 1 then back
> >> if pin2 = 1 then trainstop
> >> pwm 4,fspeed,1
> >> pwm 5,bspeed,1
> >> goto start
> >>
> >> forw:
> >> fspeed = fspeed +1
> >> if fspeed =>255 then ffull
> >> bspeed = 0
> >> pause 50
> >> goto start
> >>
> >> back:
> >> bspeed = bspeed +1
> >> if bspeed =>255 then bfull
> >> fspeed = 0
> >> pause 50
> >> goto start
> >>
> >> trainstop:
> >> fspeed = 0
> >> bspeed = 0
> >> pin4=0
> >> pin5=0
> >> goto start
> >>
> >> ffull:
> >> fspeed = 255
> >> bspeed=0
> >> goto start
> >>
> >> bfull:
> >> bspeed=255
> >> fspeed=0
> >> goto start
>
>
> To UNSUBSCRIBE, just send mail to:
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http://docs.yahoo.com/info/terms/
app notes were written by Scott Edwards, I believe. You can download
them from
http://www.parallax.com
http://www.parallax.com/dl/appnt/stamps/bs1%20appnotes.pdf
Those app notes, even though written for the BS1, are still very
informative today for the BS2 family.
-- Tracy
>hmmm.. are my posts even getting through to the list?
>
>I was hoping Al or Jon might respond to this one...? Do either of you
>remember the article on controlling a set of three model trains with a
>BS1?
>
>Vernon Graner said:
>> If I recall, one of the first Basic Stamp books I read (The actual BS
>> manual? One of the "Nuts and Volts of Basic Stamps" volumes?
>> "Microcontroller Projects Using the BASIC Stamp"?) had a very interesting
>> story describing how to use a Basic Stamp and an LCD display and c couple
>> of buttons to control three z scale model trains. The article was
>> WONDERFUL as it went over the design process, the limitations of hardware
>> and then provided the finished code and schematics so anyone could
>> replicate the results.
>>
>> I just can't remember *which* book had the description! I *think* it was
>> maybe Al Williams that wrote the article? Maybe Jon? Dang it was a good
>> article, wish I could give the source. Jon, Al? can you help jog my
>> memory?
>>
>> [noparse]:)[/noparse]
>>
>> Vern
>>
>> Andy Quirot said:
>>> what im trying to do is
>>> read a high on pin 0 then pwm the moter clockwise via H-Bridge
>>> read a high on pin 1 then pwm then motor anticlock via H-Bridge
>>> There must be a better way ????
>>> EG.
>>> symbol fspeed =w1
>>> symbol bspeed =w2
>>> let dirs = %11110000
>>> let pins = %00000000
>>> fspeed = 0
>>> bspeed = 0
>>>
>>> start:
>>> if pin0 = 1 then forw
>>> if pin1 = 1 then back
>>> if pin2 = 1 then trainstop
>>> pwm 4,fspeed,1
>>> pwm 5,bspeed,1
>>> goto start
>>>
>>> forw:
>>> fspeed = fspeed +1
>>> if fspeed =>255 then ffull
>>> bspeed = 0
>>> pause 50
>>> goto start
>>>
>>> back:
>>> bspeed = bspeed +1
>>> if bspeed =>255 then bfull
>>> fspeed = 0
>>> pause 50
>>> goto start
>>>
>>> trainstop:
>>> fspeed = 0
>>> bspeed = 0
>>> pin4=0
>>> pin5=0
>>> goto start
>>>
>>> ffull:
>>> fspeed = 255
>>> bspeed=0
>>> goto start
>>>
>>> bfull:
>>> bspeed=255
>>> fspeed=0
>>> goto start
>
>
>To UNSUBSCRIBE, just send mail to:
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>Subject and Body of the message will be ignored.
>
>
>Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
Regards
ECO
Original Message
From: "Vernon Graner" <vern@t...>
To: <basicstamps@yahoogroups.com>
Sent: Friday, September 05, 2003 12:12 AM
Subject: Re: [noparse][[/noparse]basicstamps] re stamp1 and model train
> hmmm.. are my posts even getting through to the list?
>
> I was hoping Al or Jon might respond to this one...? Do either of you
> remember the article on controlling a set of three model trains with a
> BS1?
>
> Vernon Graner said:
> > If I recall, one of the first Basic Stamp books I read (The actual BS
> > manual? One of the "Nuts and Volts of Basic Stamps" volumes?
> > "Microcontroller Projects Using the BASIC Stamp"?) had a very interesting
> > story describing how to use a Basic Stamp and an LCD display and c couple
> > of buttons to control three z scale model trains. The article was
> > WONDERFUL as it went over the design process, the limitations of hardware
> > and then provided the finished code and schematics so anyone could
> > replicate the results.
> >
> > I just can't remember *which* book had the description! I *think* it was
> > maybe Al Williams that wrote the article? Maybe Jon? Dang it was a good
> > article, wish I could give the source. Jon, Al? can you help jog my
> > memory?
> >
> > [noparse]:)[/noparse]
> >
> > Vern
> >
> > Andy Quirot said:
> >> what im trying to do is
> >> read a high on pin 0 then pwm the moter clockwise via H-Bridge
> >> read a high on pin 1 then pwm then motor anticlock via H-Bridge
> >> There must be a better way ????
> >> EG.
> >> symbol fspeed =w1
> >> symbol bspeed =w2
> >> let dirs = %11110000
> >> let pins = %00000000
> >> fspeed = 0
> >> bspeed = 0
> >>
> >> start:
> >> if pin0 = 1 then forw
> >> if pin1 = 1 then back
> >> if pin2 = 1 then trainstop
> >> pwm 4,fspeed,1
> >> pwm 5,bspeed,1
> >> goto start
> >>
> >> forw:
> >> fspeed = fspeed +1
> >> if fspeed =>255 then ffull
> >> bspeed = 0
> >> pause 50
> >> goto start
> >>
> >> back:
> >> bspeed = bspeed +1
> >> if bspeed =>255 then bfull
> >> fspeed = 0
> >> pause 50
> >> goto start
> >>
> >> trainstop:
> >> fspeed = 0
> >> bspeed = 0
> >> pin4=0
> >> pin5=0
> >> goto start
> >>
> >> ffull:
> >> fspeed = 255
> >> bspeed=0
> >> goto start
> >>
> >> bfull:
> >> bspeed=255
> >> fspeed=0
> >> goto start
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and Body
of the message will be ignored.
>
>
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>
>
>
>
ULN2803 should not be connected to ground.
> You're looking for BASIC Stamp app note 21, "Fun with Trains". Those
> app notes were written by Scott Edwards, I believe. You can download
> them from
> http://www.parallax.com
> http://www.parallax.com/dl/appnt/stamps/bs1%20appnotes.pdf
>
> Those app notes, even though written for the BS1, are still very
> informative today for the BS2 family.
>
> -- Tracy
for examples using a stamp to control motors, etc.
jim
Original Message
From: K de Jong [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=R82AmSvLFm9LUyCYPMmbf0T1JltqA-o5sxgLj5N_g7_bPDVfbT_R_wEYtTfC8xfnp8QDmUU7viMTqqZP]Klaus.Jong@n...[/url
Sent: Wednesday, September 03, 2003 4:17 PM
To: basicstamps@yahoogroups.com
Subject: RE: [noparse][[/noparse]basicstamps] re stamp1 and model train
Hi Andy,
I use a motorcontroller which is used for truckmodels or small ships. It has
a H-bridge in it and the input is the same pulse input as for a standard
servomotor for aircraftmodels etc. The controller can do max ca. 15V at 1
amp, the peakload is 2 amps.
Stampcontrol is: pulsout .... ms and off you go!!!!!
That's all.
I hope y can find something like this in your neighbourhood.
Klaus
Oorspronkelijk bericht
Van: Andy Quirot [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=fCmwojAuptEJE_INgcF3XnMtSneRunhgQpFtezQyZr0IJ62wbC8gNE-VIbyc6S2kagxJxRQq50ki2dYeTzA]andyquirot1@h...[/url
Verzonden: 03 09 2003 20:13
Aan: basicstamps@yahoogroups.com
Onderwerp: [noparse][[/noparse]basicstamps] re stamp1 and model train
what im trying to do is
read a high on pin 0 then pwm the moter clockwise via H-Bridge
read a high on pin 1 then pwm then motor anticlock via H-Bridge
There must be a better way ????
EG.
symbol fspeed =w1
symbol bspeed =w2
let dirs = %11110000
let pins = %00000000
fspeed = 0
bspeed = 0
start:
if pin0 = 1 then forw
if pin1 = 1 then back
if pin2 = 1 then trainstop
pwm 4,fspeed,1
pwm 5,bspeed,1
goto start
forw:
fspeed = fspeed +1
if fspeed =>255 then ffull
bspeed = 0
pause 50
goto start
back:
bspeed = bspeed +1
if bspeed =>255 then bfull
fspeed = 0
pause 50
goto start
trainstop:
fspeed = 0
bspeed = 0
pin4=0
pin5=0
goto start
ffull:
fspeed = 255
bspeed=0
goto start
bfull:
bspeed=255
fspeed=0
goto start
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wrote:
> what im trying to do is
> read a high on pin 0 then pwm the moter clockwise via H-Bridge
> read a high on pin 1 then pwm then motor anticlock via H-Bridge
> There must be a better way ????
Andy,
Are you planning to use an H-Bridge driver or drive the bridge
directly from the stamp? If you are going to use the driver I.C., you
should free up one more output pin (dirs = %11100000) for the Disable
control on the driver chip.
I assume that the code you presented is more theory than practical
as there is no control for the HIGH SIDE devices.
That aside, the only other functional issue I see is that it is
possible for the user to crank the motor (train (moving mass)) up to
full speed and then 50 mS later give it a reverse command. I have
firsthand knowledge of how rough that can be on electro-mechanical
systems (I've sent a few elevators into strange vertical spasms,
damaging machine and controller).
My prefrence would be to use a +/-/stop system such as:
speed range= 1(full reverse) to 247-265(stop) to 511(full forward)
Then use increment-decrement buttons to step speed (by 10 )
and stop button for ...stopping
I'm a little rusty at bs1 but this should show you what I mean.
symbol speed = w1
swmbol pulse = B2
speed = 256 'center or stop value
dirs = %11100000 '(in 012)(out3 dis.)(out4,5 forw br.)(out 6,7 rev br.)
pins = %00000000
start:
if pin0 = 1 then increase
if pin1 = 1 then decrease
if pin2 = 1 then stop
goto motor_control
goto start
increase:
speed = speed+10
if 247<speed>265 then stop 'not sure if this works on stamp,
if speed >=511 then Fful 'but it can be done with AND IF
goto start
Fful:
speed = 511
goto start
decrease:
speed = speed-10
if 247<speed>265 then stop
if speed >=1 then Rful
goto start
Rful:
speed = 1
goto start
stop:
pin3 = 0
speed = 256
pause 250
goto start
motor_control:
if speed = 256 then stop
if speed <=246 then reverse
pulse = speed-256 'result from 10 to 255
pin6 = 0 'reverse HI fet off
pin7 = 0 'reverse lo fet off
pin4 = 4 'forward hi fet on
pin3 = 1 'enable H-bridge driver I.C.
pwm 5,pulse,100 ' pulse forward low fet
pause 50
goto start
reverse:
pulse = 256-speed 'result from 10 to 255
Yada yada yada..opposite of forward... I got carried away lol.
That's just off the top of my head, i'm sure ther's a glitch or two,
but it should serve to illustrate my point of view.
Whew I'm tired now...the old man has gotta rest.
I hope some of this made sense... let me know.
Respectfully,
C.C.
> EG.
> symbol fspeed =w1
> symbol bspeed =w2
> let dirs = %11110000
> let pins = %00000000
> fspeed = 0
> bspeed = 0
>
> start:
> if pin0 = 1 then forw
> if pin1 = 1 then back
> if pin2 = 1 then trainstop
> pwm 4,fspeed,1
> pwm 5,bspeed,1
> goto start
>
> forw:
> fspeed = fspeed +1
> if fspeed =>255 then ffull
> bspeed = 0
> pause 50
> goto start
>
> back:
> bspeed = bspeed +1
> if bspeed =>255 then bfull
> fspeed = 0
> pause 50
> goto start
>
> trainstop:
> fspeed = 0
> bspeed = 0
> pin4=0
> pin5=0
> goto start
>
> ffull:
> fspeed = 255
> bspeed=0
> goto start
>
> bfull:
> bspeed=255
> fspeed=0
> goto start
stamps to motors.
jim
Original Message
From: K de Jong [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=8Q0pWSfxykf2wAnrSVzC-B9Oc8OEBnvvsvO1gwtTMUVLq2Ht0nTxdo9sbzjgAiG6dBSWluGqMebIKPI]Klaus.Jong@n...[/url
Sent: Wednesday, September 03, 2003 4:17 PM
To: basicstamps@yahoogroups.com
Subject: RE: [noparse][[/noparse]basicstamps] re stamp1 and model train
Hi Andy,
I use a motorcontroller which is used for truckmodels or small ships. It has
a H-bridge in it and the input is the same pulse input as for a standard
servomotor for aircraftmodels etc. The controller can do max ca. 15V at 1
amp, the peakload is 2 amps.
Stampcontrol is: pulsout .... ms and off you go!!!!!
That's all.
I hope y can find something like this in your neighbourhood.
Klaus
Oorspronkelijk bericht
Van: Andy Quirot [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=pX7duy7YxZGBXE-biFK-ylT-wt9jETIncM2uKAD8EFxfFgKLLcFVqZcW2E6XbeQbFrz60GPvX26J-bPYMGtvsg]andyquirot1@h...[/url
Verzonden: 03 09 2003 20:13
Aan: basicstamps@yahoogroups.com
Onderwerp: [noparse][[/noparse]basicstamps] re stamp1 and model train
what im trying to do is
read a high on pin 0 then pwm the moter clockwise via H-Bridge
read a high on pin 1 then pwm then motor anticlock via H-Bridge
There must be a better way ????
EG.
symbol fspeed =w1
symbol bspeed =w2
let dirs = %11110000
let pins = %00000000
fspeed = 0
bspeed = 0
start:
if pin0 = 1 then forw
if pin1 = 1 then back
if pin2 = 1 then trainstop
pwm 4,fspeed,1
pwm 5,bspeed,1
goto start
forw:
fspeed = fspeed +1
if fspeed =>255 then ffull
bspeed = 0
pause 50
goto start
back:
bspeed = bspeed +1
if bspeed =>255 then bfull
fspeed = 0
pause 50
goto start
trainstop:
fspeed = 0
bspeed = 0
pin4=0
pin5=0
goto start
ffull:
fspeed = 255
bspeed=0
goto start
bfull:
bspeed=255
fspeed=0
goto start
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