It prints using a regular marker of any color.
Maybe it doesn't have a great resolution but this is a project that I really wanted to do.
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Signing UpStep 1: Materials
Try to find one with a bipolar motor for the laser, mine used a regular dc motor and I changed it later for a stepper motor.
Also you will need another stepper motor with a rubber wheel and a wooden base.
Electronic stuff is detailed in other step.


















































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"The three switches in the image are to used in the final project". What for?
It's a very common integrated used for get highs currents (up to 900mA), since a microcontroller usually has about 20 mA as maximum current output.
Look, I and my team, we were interested in producing your circuit board and put in ower webshop with a link redirected to this instructable, because your project is a good project for others to make too!
Our webloja is this: www.g7electronica.net and if you send us the schematic by email (comercialg7@gmail.com) and if you authorize us make pcb of your circuit, we were very grateful!
By the way, if you want pcb's semi-professional, but with good quality and affordable for your circuits, you can also contact us! ;)
YoU aRe CrEaTiVe
I want to build this so badly
The PIC has only 3.5 KB of code memory, so I'm thinking that might be the limit.
Would be nice to add more colors, maybe using some primitive way of "cartridge" with a small (and fast) valve
too bad theres no way (that i know of) to expand the memory size on the pic so you could do larger prints that are more precise.
A cheap 32KiB EEPROM should give 512x512 monochrome pixels...
I am trying this as soon as I buy the motor controllers...
The steppermotors in a CD-burner is a dying race, I recommend a CD-reader before 2001-2003, these usually have a least one steppermotor, while the newer one always have two DCmotors with encoders.
> Maybe it doesn't have a great resolution but this is a project that I really wanted to do.
Please don't write that, it is TOO cool to be excused. Write this instead: Have fun with YOUR low cost dotmatrix printer, and post pictures. :)
Low cost and low resolutions paper printers are very seldom so this is a unique pearl! I am bored by these nice 3D printeres and CNCmachine, give us more DIY dot-matrix printers!!!! :)