I thought that the uneven terrain and fast approach velocity (around 60 MPH) caused signal interference that caused the inaccuracies, but that doesn't align with the data. Attached is a Google Earth

Good thoughts Jared. We do know the GPS is the one that has flown as part of the Byonics MT1000 on all flights we have done. We should check to see if it has come loose in the MT1000. Another thought

I now have the payload programmed. I have much testing to do and need to try to optimize the memory a bit (I'm at 70% dynamic memory), but it seems to be working correctly. Here's an overview of what

That was my thought too. Spinning. Tyler -- Tyler,Sent from Gmail Mobile

Josh, If you need one of these byonics T3 minis for building your digi let me know. Kevin From: <BARC-HAB@groups.io> on behalf of Josh Jensen <kd7wrc@...> Reply-To: "BARC-HAB@groups.io"

Does anyone have experience with PCB design? My balloon payload finalized, I'm now at around 20 grams or so. This is 5 grams heavier than I want for optimal altitude. I can lose unnecessary resistors,

D'oh. Hit Send a bit too early. Anyway... I could go from 9 to 4 (maybe 3 or 2) solar cells with a SPV1040 step-up converter / charge controller - http://www.st.com/en/power-management/spv1040.html -

Is Brandon Tibbetts on this list? He's done some PCB design work before. Josh

He's not, but I've copied Brandon on this message to see if he's interested, or if he'd like to join the list - https://groups.io/g/BARC-HAB/ I think I can figure out which components can go away on

As a quick update, I've been working with Jason from Etherkit and he's designing a breakout board for the clock generator - https://github.com/NT7S/Si5351APicoBoB/blob/master/pcb/Si5351APicoBoB.pdf It

So how many components must you solder on this new board he will upload to oshpark? Sent from my iPhone

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

Yes I'd be interested in helping, but have been loaded with quite alot in general. I am experienced some in layout, and should be able to put something together if needed. Unless there is a

Brandon - Thank you for the offer. It sounds like this board is being designed, so that should be taken care of. To answer your questions though, I'd want anything on the thinnest PCB board readily

Yep, that sounds like you're on the right track. I'll keep my eye open for thin PCB options, and once everything is proven out, then could help put it all to one thin/tiny PCB. As you mentioned that

Thank you Brandon. I have a document that provides an overview of everything at https://docs.google.com/document/d/1Es1rbg2a9rPM2AEG23-Rvfko8uyDNknSzF_th0O7MnU/edit?usp=sharing I'll put together a

After realizing the previous charge controller wouldn't work, I decided to design my own. The schematic and PCB renders are attached. This uses the SPV1040 charge controller -

Jared, 0603 components aren't that bad to solder. It's when you get down to 0402 size that they get to be a pain. Josh

Jared, I have a temp controlled soldering station that includes the heat gun for SMD work/rework, and various tip sizes. I also have some awesome indium solder. You are welcome to use it. There are

I don't have any other details, but if any of you are available to help support this, that would be very helpful. I'm not sure yet if I'll be around. Kevin or I will send more details as we get