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Configuration Nailed Down

A project log for MultiSpork

A wireless analog/digital multitool & data recorder

pierce-nicholsPierce Nichols 07/28/2014 at 03:230 Comments

I've now finally got the configuration nailed down (see the block diagram on Github), and I'm mostly done laying out the circuit. It's a monster -- I suspect I'm now north of 150 components, but I haven't counted yet. More than eighty of them are capacitors of various descriptions. I've got the four power rails (+10V, -10V, +5V, +3V3) powered from a single LiPo cell. I've got the major chips into the schematic and wired together.

I've still got the following elements to finish in the schematic before I can start the massive layout task ahead:

-- MAX11300 temp sensors

-- CC3100 flash

-- RF components & antenna

-- CC3100 crystals

Grab the latest off Github if you'd like to feel my pain.

I've also concluded the the production version of this board is going to have to have components on both sides to keep it from being enormous. If I'm going to bite that bullet, I might as well push most of the components down to 0402 or even 0201 in order to keep the overall size of things under some sort of control. However, I will only do that once I know I have a working circuit overall.

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