Anybody used EPSON M-42V Daisy wheel Printer
Hi,
I need to use a low cost mini printer mechanism in one of my project. My local market provided me an EPSON Model - 42V printer for about $15(INR Rs.650). It has got 3 daisy wheels for printer. One motor and an encoder strip to provide some positioning and timing signals. (I could figure out this much) Googling for it I did not find any datasheet or application notes. Seems a pretty obsolete one. Following is what I have with me:
Code:
1 - trigger magnet -
2 - trigger magnet +
3 - motor +
4 - motor -
5 - timing signal T ---
6 - reset signal R ---
7 - common for 5,6,8
8 - Timing sub signal t
Any help or suggestion ( for any other printer aswell ) on how to play with it would be of great help to me. The mentioned printer is widely used in Telephone Call Monitor devices in the local market. I really do not have the scope and time to reverse engineer.
Got the Datasheet from Jerson
Hi Everybody,
Jerson was kind enough scan the pages of the old datasheet and send it to me. I can the same should anybody else need it. It is around 4.2Mb and cannot be uploaded here. Thanks Jerson for sharing and thanks to the forum to make it actually happen.
Hi i would love to have that
I have that thing i couldnt make it work, could you send it to some mail? mine is josuetas in gmail tx.
query about epson Model 42V printer
[QUOTE=sougata;24056]Hi, I am also searching Epson Model 42v datasheet, finally you got it, please let me know from where I can get the datasheet of the same. You have written you will help anyone which is in need, so please tell me from where I can get the datasheet. please email me at removed.
I will be thankful to you.
from
Harsharanjit
regarding epson 42 v printer
hi jerson sir,
i hav got ur reply. thanks for showing the interest in helping me.
as i hav told u earlier i hav got the driver circuit that drives the motor and the permanent magnet. but i am not finding any data on the remaining signals like
1. T
2. rst
3 . common(c)
4. t
if u could send me some data regarding how this signals can be used it will be a great help.
mail me on my id:
regarding driving the printer
hello sir,
i want to know weather its possible to print the characters by using epson 42 v and abt driving it by using atmega32 microcontroller. i hav written the code using code vision . the code is as follows.
#include<mega32.h>
#include<delay.h>
// timing signal T on portD-0
//reset pulse on portD-1
//triger magnet driving pulse on portD-2
int i;
void timing(void);
void reset(void);
void magnet(void);
void main()
{
while(1)
{
for(i=0;i<8;i++)
{
timing();
}
reset();
magnet();
}
}
void timing(void)
{
DDRD=0xff;
PORTD=0x01;
delay_ms(1);
PORTD=0x00;;
delay_ms(1);
}
void reset(void)
{
DDRD=0xff;
PORTD=0x02;
delay_ms(1);
PORTD=0x00; // a single reset pulse on pin pd.1
delay_ms(1);
}
void magnet(void)
{
DDRD=0xff;
PORTD=0x05;
delay_ms(1);
PORTD=0x04; //timing pulse on pd.0 gets low after 1ms
delay_us(500); // magnet pulse gets low on pd.2 after 1.5 ms
PORTD=0x00;
delay_ms(1);
}
i want to know weather motor needs the pulses or a continuous 5v supply.
plz post some data Mr. jerson
hello jerson sir,
i wnat some data regarding thetimings to run the printer. i am just being able to run motor and the magnetbut because of lack of timing the desired characters are not printed.
plz post some data Mr. jerson
hello jerson sir,
i wnat some data regarding thetimings to run the printer. i am just being able to run motor and the magnetbut because of lack of timing the desired characters are not printed.
As u hav mentioned in one of the thread as "Looks like you got yourself a calculator printer. I have used this printer many moons ago and may still have some data. If you still cannot find anything, let me know, I will search if the data is still there." so if u hav some data plz find it for me and post it so everybody can use it.
U hav done the project so u would hav exact knowledge of the timings. so i sincerely request u to post some data or to mail me that on my Id