Homebrew PCBs

At least in the C84 the chips are just connected in parallel "dumb".
It can not judge which color is in which slot by the chip. All colors must  
be present or it will not get the right response when polling for all the  
colors, but it does not know the order. I had the chips soldered together  
as a stack away from the carriage, for easy (bulk) resetting, before i got  
the spongeless carts with auto-reset chips.

They might be very reluctant to fill a different color into the cart,  
certainy if they fill through the outlet valve with non-disposeable tools  
that could get contaminated. A tiny amount of black can color one heck of  
a lot of water, and of course ink.


About the heater, maybe a ceramic rod element like that from a radiation  
heater might work well. You'd need to hook it to a dimmer and let it  
settle or use feedback control. The hot air gun ought to be a quicker fix  
for trials.

ST

On Sat, 10 Feb 2007 14:39:17 +0100, lcdpublishing  
<lcdpublishing@...> wrote:

>
> It also seems as though adding a heater is a good idea to allow for
> faster and better drying of the inks, so that too will be considered
> along the way.  Any suggestions for a heater that could heat the
> entire width of the PCB board and allow for temperature control?
> Chris