well we use a library for communicate using the parallel port of a pc. the port was connected a 8 bits shift register with a clock signal ( you can use a bit port of the parallel for this, but in our exp is more complicated so use a 555 chip to generate the square pulse ). The register is use like a memory of the port info, then you connect it to 8 transistors for protection of the port and then connect to h drive or relays
The head is a car alarm linear motor (the ones that dock the buttons in the doors)with a nail to do the marks, the body of the printer is wooden and has 2 step motors to move the paper and the head, the driver of the printer was done in C# and the printer is conected to a pc with the parallel port (like a real printer)
well we use a library for communicate using the parallel port of a pc. the port was connected a 8 bits shift register with a clock signal ( you can use a bit port of the parallel for this, but in our exp is more complicated so use a 555 chip to generate the square pulse ). The register is use like a memory of the port info, then you connect it to 8 transistors for protection of the port and then connect to h drive or relays
DarkJago 3 years ago
hey plz tell me how did u interface this things i to using c# but ic's and all
plz help me out
do reply
vaibhavhadole1 3 years ago
what ic did you used?
bumburucci 3 years ago
we use c# for the interface and the driver control for the motors, i dont rebember what type of h bridge we use
DarkJago 3 years ago
i also working on it ..would you pls help me?
bumburucci 3 years ago
Thanks for Reply!!!!!
It is as per the specifications given for braille like,
1) Array of 2X3
2) Each dot spacing 2.5mm and all that thing
what is the speed of u r model
waiting for reply......
vaibhavhadole1 3 years ago
that correct, the arrays was 2 x 3 and the spacing was the standar in braille.
I don´t rememmber the speed of the printer, but i think that was 1 sheet in 2 or 3 minutes, very slow but thats because the driver
DarkJago 3 years ago
Thanx.....
can we increase the speed???
I also made one head by using the 6 push-pull type solenoids but very bulky
I have an only size problem if u can help plz....
reply..
vaibhavhadole1 3 years ago
you can increase the speed but that depens of the motors you are suing and the type of driver you put in them.
DarkJago 3 years ago
awesome!!!! man
how did u did tht??
wht did u use for head can u help me???
Plzzz
vaibhavhadole1 3 years ago
The head is a car alarm linear motor (the ones that dock the buttons in the doors)with a nail to do the marks, the body of the printer is wooden and has 2 step motors to move the paper and the head, the driver of the printer was done in C# and the printer is conected to a pc with the parallel port (like a real printer)
DarkJago 3 years ago