Re: Tell me your favorite uBitx mods
Diver Martin <diver.martin@...>
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So, this is roughly what I'm thinking for the layout thus far. Here's what you're seeing thus far: uBitx is underneath the PCB on .5" standoffs (Supplied with the uBitx kit). The uBitx itself is 1/4" away from the bottom** of the case. PCB mounts on top. Upper left: Power input, 2x (one for 8V+, other for 12V or PA power, default is to just use the 8V+ line, a relay can change the PA power). Going counter-clockwise, 5V regulator (I'm going to move that to the lower side of the PCB and use the .1" header from the raduino instead, so that +5V doesn't cross under the RF path), BNC RF output, DSP audio output, Teensy 3.2 control module (Due to higher power MCU w/ dsp capability), Key jack, PTT jack. There's plenty of room for an AGC mod, the raduino header, and the audio connector. Right side, the vendor I use for PCB's has options of 15cm x 20cm, so I made use of the extra space on the right to create a 'front panel' pcb. So Mic and headphones on the front (blue comment layer circles show where the audio jacks would pop out), and one would break off the additional PCB that contains a variable pot for audio gain, encoder (reused from uBitx kit), some pushbuttons (for whatever function you want), and then the HD44780 display shipped with the raduino. Two headers so that it can be mounted upside down or however you wish.
**(or top of case) I did this because some people might want the display on the right side of the unit, others on the left, and this can be easily achieved by simply flipping the entire thing upside down in the enclosure. I'm not sure if the HD44780 can be flipped upside down (I can't see why not), but just in case, footprints are free, would be up to the user to decide where it gets soldered in. There's a 595 shift register for the display as well. One thing not shown yet are the connections for right angle .1" headers that would connect the front panel to the main board, easy enough to add later, just haven't done it yet.
Going back along the top, SWR Bridge components, and the lions share of space for the tuner, and a cutout notch for the uBitx heatsinks.
As you can see, plenty of room on the system for mods. Just... harder to get front panel space :)
So, full list of features:
AGC(Pending design, feedback is good! - include S-meter)
Fast MCU w/ USB back panel access [cat control]
Dual power supplies for TX pwr
DSP audio output
Pushbuttons for the front panel
Linear control (Pending, Just a cheap reed relay hooked up to the PTT line basically)
I haven't even thought too much about how much it'd cost to make, Probably a significant amount :) I'm putting single-unit costs in my components in the schematic, so that I can take a guess at just the raw BoM cost eventually, but all in due time.
On Mon, Jan 1, 2018 at 5:03 PM, Diver Martin <diver.martin@...> wrote: