Direct Digital Lambda (DDL)

[Bernd Felsche]

I've uploaded changes to the DDL project.
	http://bernd.felsche.org/tech/EFI/vapour/DDL.html

Changes include a refinement of the pump drive, more notes on the
circuit, and more notes on the sensor. The sensor notes were
separated out to a sub-page as the main page was becoming too big.

Direct Digital Lambda (DDL) is a project that explores the use of a
microcontroller, close-coupled to a wide-band oxygen sensor to
reduce the complexity of the hardware and to provide a flexible
platform for experimenting with operating strategies and sensor
characteristics.

DDL is not DIY-WB.

DIY-WB is based entirely on analogue circuitry, is complete,
available and reported to be working.  See
	http://www.diy-efi.org/diy_efi/projects/diy_wb/
for details of that project.

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