UDB5Mini boards available

[ben levitt]

Hi UDB'ers!

I just want to let you all know that I still have some UDB5Mini boards available, and that I've managed to reduce their price.  You can see them at my minimalist web store https://octopilot.com/ .  (Note that I don't make money on these.  I just try to produce enough of them to allow our community to continue to have hardware.)

Have you been thinking about building a tiny smart glider like Pete's, a little autonomous flying wing like mine, a giant FPV machine, or your own DCM-driven creation?  The building season is coming up!  :)  (In the Northern hemisphere at least...)

Either way, happy flying everyone!

Ben

[guy.franc...@gmail.com]

Hi ben,

I am looking for connecting the UDB5 mini (version 1.0) to my new brand Spedix quadcopter.

I try to find the right connector wirings looking at your eagle files, but I am not sure of what I have understood.

Could you please indicate :

1. Where is the pin 1 of the programing port: near the fixation hole or near the 5V port?
2. What is the best to connect the RFD 800 telemetry, powered with 5V: using RX2/TX2 near the up side (but without using the 3V3 port) or those near the bottom left (which seem dedicated to the GPS)?
3. How to connect the GPS ZED-F9P (integrated in the Ardusimple lite board) using its "PixHawk" port powered with 5V?
   I do not find the six GPS pins for the GPS named "U9" on the eagle file, are they around GRX/GTX ports? Is there a 5V port in the vicinity/neighbourhood or among of 2 rows x 3 columns holes?

I wish to have a header to connect the magnetometer. I think about drilling 4 small holes in the removable part of the board, near the I2C port.
Is there any inconvenient to do that? I suppose there is no cupper circuit in that part of the board.

Many thanks for your answer,

Best wishes,

gfm

[ben levitt]

Hello Guy,

I'll try to answer your questions below.

1. Pin 1 of the programming port (MCLR) is in the corner of the board, near the breakaway screw hole.

2. To connect to 5V telemetry, I'd suggest using the telemetry pins near the programmer port, plus the spare 5V pin.  Like this:

3. I'm not familiar with this GPS.  I suggest using the fine-pitched connector labeled GPS, if you have a cable you can use.  It's designed for the EM-506 and its cable.  Or you can use the through-hole pins.  All GPS pins are labeled here:

4. You're welcome to drill holes in the removable part of the board.  It contains no copper, so nothing will block you from wiring it up with your own header, but there's also nothing to solder your own pins onto.

Please let me know if you have any more questions!

Best wishes,

Ben

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[guy.franc...@gmail.com]

Hi Ben,

Many thanks for your answer.
I got all information that I need for the moment and I can start welding the pins!

May I suppose that all 5V pins are connected together, none of them are filtered or current limited.
So I welding a big capacitor for the Lidar or driving 1 Amp for the telemetry does not degradate the card operation.

Best wishes,

gfm