Jean-Baptiste Labrune and his research group at MIT’s Tangible Media Group have been experimenting with using a laser cutter to turn ordinary materials into printed circuit boards (PCBs). [via]
They have a clever process for making the traces. Since it is very difficult to cut metal with a laser, they can’t start with a solid sheet of metal material and burn away the parts that they don’t want. Instead, they put a piece of masking tape over the material that they want to make traces on, then use the laser to burn off the tape in places where they want metal to be. Finally, they use a paintbrush to apply conductive paint into the newly cut grooves, and remove the masking tape mask. They’ve got some more photos of the process in a Flickr set.
Laser cutting circuit boards - [Link]
Joe Grand @ grandideastudio.com is working on “Laser Range Finder” and shares his experience building it on Parallax Forums. He shows how he used a CMUcam to detect the reflected laser beam and calculate range based on triangulation. He writes: [via]
I decided to go with the method of optical triangulation whereas the distance to a targeted object is calculated using triangulation with simple trigonometry between the centroid of laser light, camera, and object. The most compelling example is the Webcam Based DIY Laser Rangefinder (http://sites.google.com/site/todddan…m_laser_ranger) and my design is based, in theory, on this implementation.
Laser Range Finder - [Link]
Phillipe Hurbain build this laser 3D Scanner based on lego modules. This device uses a line laser and a webcam to scan the object. The software used is David laser scanner. Check it out ..
Lego laser 3D scanner - [Link]
gallamine @ robotbox.net offers a $200 bounty to the first person that successfully hacks Neato Robotics’s XV-11 floor vacuuming robot’s laser rangefinder and releases open source documentation/drivers for using it on a robot. This type of sensor would be a great asset to small (and large) mobile robots and it’s a steal for the $399 it costs to buy the Neato robot. He want to kickstart the process of documenting how to use it.
The Open Lidar Project – Hack the Neato XV-11 Lidar – [Link]
This project is a CNC plotter equipped with a 300mW laser able to deliver great results on a variety of materials. The power of the laser is enough to cut thin films and engrave wood. Check construction details on the link below.
CNC Plotter with Burning Laser – [Link]
Owen builds a CNC laser cutter that can cut sheet metal. It’s rated at 250 Watt and costs around 15K $. Check constructions details on the link below. He writes: [via]
This is a CO2 laser system that cuts sheet metal. The laser and all optics are stationary. The beam is directed downwards on to the part that sits on a computer controlled platform which moves the piece in the x and y directions. Cutting is achieved by passing the beam through a focusing lens inside of a cutting head nozzle. Oxygen is fed into the side of the chamber below the focusing lens. This gas exits the nozzle along with the beam and the laser beam/oxygen combination serves to vaporize the steel.
DIY 250-watt laser cutter - [Link]
This project shows how to build a laser projector using an Arduino, a heptagon pillbox, a cooler fan and a laser pointer. Check how it works and construction details on the link below. The heptagon pillbox scan the projection surface and produced the words. [via]
Because the mirrors are moving the reflected laser dot sweeps the screen from left to right, because it does it very quickly your eyes actually see an horizontal solid line, in this case you see 7 lines one on top of the other because the each mirror is at an angle.
DIY laser projector – [Link]
This project shows how to build a DIY laser CNC machine using parts from old printers and a CD-ROM. The laser diode using is rated at 1W. With this machine you are able to:
- Cut paper
- Engrave wood and cardboard
- Engrave plastic
- Engrave PCBs etc
DiY: How to build a homemade Router Laser CNC - [Link]
Nyle Steiner of sparkbangbuzz built a Simple Homemade T.E.A. Laser using some pieces of scrap aluminum and a moderately high voltage power supply. He writes: [via]
I used to tell people “There is no such thing a true home made laser. There is always a requirement for exotic parts that can only be obtained from a laser manufacturer, and – or there is the requirement to perform exotic high vacuum, glass blowing and gas mixing processes. This would defeat much of the satisfaction of building your own laser.” When I read about TEA lasers recently though, that all changed. Here is a laser that is built from aluminum foil, a dielectric and some pieces of aluminum. It is amazing to think of a laser project where a simple 4 to 6 KV DC power supply is the most elaborate component.
DIY ultraviolet laser made from scrap aluminum - [Link]