Re: PCB designer? Weight issues.
toggle quoted messageShow quoted text
You'll have to solder:
- Headers (if you want them - I'll solder wires directly to save the weight)
- 2 capacitors (SMD)
- 2 resistors (SMD)
- The TCXO clock (small, but only 4 corner pads)
- The Si5351A. It's VERY small (only 3mm) and has 8 legs, so is likely to be a tricky solder. I've ordered a finer soldering iron tip!
This photo gives a good sense of scale for the components - https://cdn-learn.adafruit.com/assets/assets/000/018/751/medium640/adafruit_products_solder1.jpg?1407866334 The TCXO and Si5351A are the two components between SCL and CLK1.
You can see how with only these few components that the board could be very small and light. Jason should have the PCB design done soon.
I think I'm also going to swap out my supercapacitors with this one - http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail&itemSeq=231174428&uq=636335947477185122 It has lower capacitance (1.5F vs 2.5F), but saves a full gram of weight.
I think with these changes I should be pretty close to my target of 16 grams.
On Tue, Jun 20, 2017 at 9:50 PM, Kevin Reeve <kevin.reeve@...> wrote: