EfiHacks Misc Pics

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efiHacks Gallery of some Development Highlights pics

We will try to add more as we get to overcome some more obstacles :)

So the story goes

Well, we start right now with rework pics of the 1st efiO2Meter development boards. We know that the bluetooth device runs on 3.3 V and the efiO2Meter on 5 V, but somehow we missed it in the schematics ... so you glue it on afterwards and potentially fry a few bt-modules in the process of discovery ... what can we say other than we're only human with lots of experiences.

By the way, the definition of experience : the amount of experience is proportionally equal to the amount of previous fu%*-ups :) ... ergo ... we're very experienced :) :) :)

Also we are not into rocket science, regular science seems sometimes challenging enough :)

efiO2Meter Board Top View

EfiO2Meter-top.png

Not much rework to show ... the tentacles, green wires are for loading the development firmware via spi-bus ... no worries, no longer on production boards.

efiO2Meter Board Bottom View

EfiO2Meter-bot.png

This took quite some time ... those 603 size resistors, like coarse ground peppercorns (not the ones on the bt-module ... they're even smaller), are 1.6 mm x 0.8 mm and 2 mm spacing headers.

The bluetooth module on stilts, for debug de-solder and exchange reasons.

efiO2Meter Comm. Distribution Concept Drawing

500px

Conceptual schematic to figure out the signal flow and voltage interface levels.




Note : All published design documentation is Copyright efiLabs.com and its use is without exception FOR NON COMMERCIAL PURPOSE ONLY. For commercial licenses contact efilabs.com ... try us, we're reasonable :)

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