It helps that I do scratch fabrication every day in my job this way, working rough but reasonably accurate. Up to a certain level of complex geometry, hand fabbing is faster once you get good at it. A few tips:
Purely curiosity, but what is your daytime job? This has been a cool thread because it really takes the stuff beyond just the prop without which many projects are really just pipe dreams. And you are correct that in most places (that I have been aware of) asking if the school has a shop course of any type generally draws that look of "c'mon that is ancient history, no one needs THAT now"
And it's environmentally friendly because it provides a fast way to recover all of the plastic materials that would otherwise slowly deteriorate in the weather and become more junk cluttering the roadway. Such an incentive and a benefit to all the DIYers and also to all the political volunteers who will spend less time having to pick up after themselves, er their candidates post election day.
She works! I slammed on a BS1 in another mad hour of "erco's rapid prototyping" and the results are pretty good. Here's the very first test, slow but sure. It might be able to go a bit faster with some futzing. My first stepper project, right around 2 hours total build time.
' {$STAMP BS1}
' {$PBASIC 1.0}
DIRS=%11111111
B2=2
PAUSE 1000
main:
FOR W0=1 TO 600 'drive fwd 510= full rotation
GOSUB fwd
NEXT
PINS=0
PAUSE 1000
FOR W0=1 TO 145 '90 degree turn
GOSUB turn
NEXT
PINS=0
PAUSE 1000
GOTO main
fwd: ' both motors fwd, relative reverse directions
PINS=57 '9 + 48 9 left motor fwd 48 right motor fwd
PAUSE 2
PINS=108 '12 + 96
PAUSE 2
PINS=198 '6 + 192
PAUSE 2
PINS=147 '3 + 144
PAUSE 2
RETURN
turn:
PINS=51 '3 + 48
PAUSE B2
PINS=102 '6 + 96
PAUSE B2
PINS=204 '12 + 192
PAUSE B2
PINS=153 '9 + 144
PAUSE B2
RETURN
Comments
All these warm & fuzzy comments and I haven't even slapped a controller on there!
Heck, maybe I'll start with a BS1 just to show the potential.
Or maybe an Arduino instead.
Any preferences from the crowd? Should I start a poll?
-Phil
Well it is just a prototype...
C.W.
Purely curiosity, but what is your daytime job? This has been a cool thread because it really takes the stuff beyond just the prop without which many projects are really just pipe dreams. And you are correct that in most places (that I have been aware of) asking if the school has a shop course of any type generally draws that look of "c'mon that is ancient history, no one needs THAT now"
And it's environmentally friendly because it provides a fast way to recover all of the plastic materials that would otherwise slowly deteriorate in the weather and become more junk cluttering the roadway. Such an incentive and a benefit to all the DIYers and also to all the political volunteers who will spend less time having to pick up after themselves, er their candidates post election day.
https://vimeo.com/49920522
It amply illustrates the principles of this thread. Enjoy!
-Phil
Mad Max lives.........
Since I can not print the last comment in the video, I can only come up with either WOW! or O.M.G.
Not sure which..........
' {$STAMP BS1} ' {$PBASIC 1.0} DIRS=%11111111 B2=2 PAUSE 1000 main: FOR W0=1 TO 600 'drive fwd 510= full rotation GOSUB fwd NEXT PINS=0 PAUSE 1000 FOR W0=1 TO 145 '90 degree turn GOSUB turn NEXT PINS=0 PAUSE 1000 GOTO main fwd: ' both motors fwd, relative reverse directions PINS=57 '9 + 48 9 left motor fwd 48 right motor fwd PAUSE 2 PINS=108 '12 + 96 PAUSE 2 PINS=198 '6 + 192 PAUSE 2 PINS=147 '3 + 144 PAUSE 2 RETURN turn: PINS=51 '3 + 48 PAUSE B2 PINS=102 '6 + 96 PAUSE B2 PINS=204 '12 + 192 PAUSE B2 PINS=153 '9 + 144 PAUSE B2 RETURNMy only regret using the BS1 is that all eight I/O pins are used to control the stepper motors. Nothing left to trigger the flamethrower with!
If I recall, you have a Propeller.....come on in, the waters warm and your COGs are waiting!!