wb lcd display

[bcroe at juno.com]

I just got one of those KC5300 Fuel Mixture Meter Kits 
from Jaycar today.   Looks like a pretty reasonable 
assembly.  It could be used to display the WB Vout
in digital format, if someone is up to writing code for
the PIC 16F84.  Would save building something from
scratch.  Probably needs some kind of voltage scaling
at the input too.  

As originally designed, it used a Bosch EGO sensor.
The idea that this is a wideband unit is really a stretch; I
would have little confidence in the displayed value outside
of 13.5:1 to 16:1.  It is a big step ahead of those 10 LED
displays you connect to a typical NB sensor.  It is just a
display; there are no sensor support circuits of the type
provided by the WB project.

Bruce Roe

On Sun, 09 Sep 2001 22:57:05 -0400 Bill Shaw <bshaw at connix.com> writes:
> While waiting for my DIY-WB I started thinking about a
> display for it.  I've just uploaded to incoming a file
> called WB_LCD.EPS which is schematic for a LCD display for
> the wb-02 meter.  It has a PIC16F877 controlling a 4 digit
> LCD display.  The PIC is flash based and can be reprogramed
> in circuit, has 4 analog channels available,  a 64K bit
> serial eeprom for data logging,  and a serial port for
> talking to a PC or laptop.
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