Hi,
I am somewhat stuck and was hoping someone could give me some guidance.
Basically I am looking to create a device that will be attached to a pole about 3 meters tall and draw a pattern on the ground. I was considering using a laser but I am not aware of any module that can create such a pattern.
Can anyone help?
Thanks,
Stephan
The 2D galvanometer/mirror arrangements used in laser light shows can be programmed to draw such a pattern. The pattern may not be visible in full sunlight, though, unless you use a powerful laser.
Could almost guarantee the output would never be clean as you have drawn.........a 3 metre pole moves one hell of a lot with even trucks going by on the highway a mile away.
What are the dimensions of the pattern? There are some fairly inexpensive (and cheaply build) projectors available. If the pattern is fixed, an appropriate lense, light source, and mask to block light to form the pattern might work.
A laser on a pan & tilt assembly could draw your pattern, perhaps crudely. Some math required 
.
Example pan/tilt assembly: SPT200 Pan & Tilt Kit - ServoCity
Edit to add:
Google...
drawing with laser on pan/tilt
...for many ideas
The pattern is about 5m x 5m
Thanks, will take a look
Let me guess! There are going to be people in that pattern while it is being drawn?
Yep lasers are dangerous to people , the maths is somewhat difficult and you’d need to draw the whole thing in say 10mS to give persistence if vision . Any people out there would cause shadows .
You could use a projector , but very expensive , or just draw out with some chalk.
One for the too hard drawer
Midnight LASER Dodgeball pitch? Use multiple LASERs from both sides to reduce shadows. Use "keystone effect" to make oblique angles square.
"Dangerous" LASERs are not for sale off the shelf. To mitigate the chance of someone staring for long periods into the beam of a pet-store LASER toy, provide and enforce the wearing of PPE (goggles) with Optical Density (OD) rating for your LASER... the PPE will add a "Burning Man" touch to the tilt... and head-shots are illegal... because everyone follows rules... right? : )
You could also use plastic light pipe embedded in the turf. US$2/linear meter
yeah.
Which is mechanically VERY difficult, given the dimensions stated (5x5m from 3m distance.)
Also, the power requirements of whatever light source you'd use would be quite significant.
Not really, it's just drawn to set up a game. There are wooden blocks that are placed in the 11 squares.
If no people, who will set the wooden blocks?
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