Preliminary Design Work
I'm in the process of ordering the major components for HackRF production, which means I've had to figure out what those components are! Over the last few weeks I've been going through the Jawbreaker design looking for things that I might like to change. I've also been investigating pricing and availability of the major components.
Overall, not much is going to change. The PCB layout will change, and there will be an enclosure, but the schematic won't be very different from Jawbreaker. All of the RF ICs will be the same, but I'm switching the microcontroller from the LPC4330 to the LPC4320 (in the same 144 pin package). The only reason I selected the LPC4330 for Jawbreaker in the first place was that it was the first LPC43xx part to become available in quantity. We aren't using the extra features that the LPC4330 has over the LPC4320, so it will be an easy transition.
I've decided on a custom injection molded plastic enclosure for HackRF One (which, by the way, is what I'm calling the new model). It will be lighter weight and probably smaller than an aluminum enclosure would be, making the device more portable and reducing shipping costs. I'm going to adjust the PCB layout so that a small shield can be soldered over the RF section of the board. This should reduce interference from the digital section of the board itself in addition to reducing external interference as an aluminum enclosure would.
The device will have external SMA connectors for antenna, clock input, and clock output. The opposite end (probably) will have a micro USB connector, LED indicators, and buttons. Once the layout is complete, I'll post an image. For now I'm still working on finalizing the schematic.