Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

previous by date index next by date
previous in topic topic list next in topic

Subject: Re: [Homebrew_PCBs] Epson R220 on sale

From: "Stefan Trethan" <stefan_trethan@...>
Date: 2006-06-30

On Fri, 30 Jun 2006 16:53:34 +0200, Volkan Sahin <vsahin@...>
wrote:

> Stefan,
> If it is possible send me your inkjet cartridge data. I can help you if
> you wish to do your SW. I didn't finalize my circuit it is still using
> RAM instead of E2. I have just received E2 chips from Digikey most
> probably end of next week I could be able to add E2 interface.
> Volkan
> .... making a chip replacement with a microcontroller?


You said it must be a fast micro, i'm not sure that's the case. That one
webpage you know already the guy used a atmel.
He told me the problem was the startup time, but if you power the
controller from the printer power and not the chip power that should not
be a problem (he put the circuit atop the CIS).

Have you tried always sending the same ink level back, or does the printer
notice if the value doesn't change?

ST