Re: [Paparazzi-devel] YAPA Autopilot Power Problems

[David Conger]

Hello everyone,

@Mauro: Glad to hear. I have received your suggestions. I will work on them. 

@World: YAPA2 SAR is an experiment. I'm selling them for virtually my cost. 60.00 (while supplies last). They are aimed at someone who just wants an assembly alone and can do the work I normally do. Since I simply box and ship them you save. All my prices are directly tied to how much effort and expense is involved to get them to you. I take no salary and donate my time so prices are as low as I can make them without losing money and no longer existing. 

There is an even lower cost option. Purchase the PCBs only and assemble them yourself. It's a valid option many have done. YAPA2 SAR is simply a step up from that but not anything that is power up and you're ready to go. 

Many may not realize it but YAPA2 is just a TWOG in another form factor. Tiny1.3 (yes you can still buy them), Tiny2.11, TWOG, YAPA2, UmarimLiteV2 (even NavGoV3)  are all essentially the same thing and run the same code. You are essentially simply choosing the size, if it has onboard GPS or not, number of connectors. If you are new to Paparazzi you are likely going to find Paparazzi gives you more power to decide. You do not need to only use what the other guy is using. All of them will work. It is best to shop here: http://paparazzi.enac.fr/wiki/Autopilots

These are all working flying assemblies that you can choose from. 

Looking to the future soon pre-packaged bundles for Quadrotor and Fixed wing will be available. 

-David Conger

On Feb 15, 2013, at 01:05 AM, Mauro Garcia Acero <address@hidden> wrote:

Thanks Christophe,

 

After some discussion with David (from PPZUAV) he told me that there was nothing charged. I did understand the opposite from his web page and having 2 leds lighted up at the first connection and never again, sent me to this misunderstanding.

 

I have followed the uploader guide and I have charged a example program (it would be good to have a minimum testing program with some leds flashing as example for this kind of testing). Now I have led 3 flashing, so I think that everything is working fine and there is not error on the soldering. Still no 100% sure of it.

 

Anyway, I have forwarded to David my remarks and suggestions of making something more "testable" for future units because it is a real proof of faith to work for several days in a board that you don't know if it is still working or just burned down.

 

Thanks

Mauro

---

From: address@hidden [mailto:address@hidden On Behalf Of Christophe De Wagter
Sent: jueves, 14 de febrero de 2013 23:14
To: paparazzi-devel
Subject: Re: [Paparazzi-devel] YAPA Autopilot Power Problems

 

Dear Mauro,

Probably PPZUAV needs to answer that but are you sure the boards are pre-flashed with code or did you upload a bootlader and firmware yourself?

Christophe

On Feb 14, 2013 10:22 PM, "Mauro Garcia Acero" <address@hidden> wrote:

 

Dear all,

 

I have purchased 2 YAPA boards at PPZUAV and I have just received them.

 

As it is explained in the web page, I have soldered the power the power supply, headers, USB connector, MAXIM 232 and all the caps needed (6). Then I have plug the board with a 12V DC adapter. LED yellow and red have flashed instantly and then nothing. I have tried again, without no result. I have checked voltage and 12V are arriving to the power supply and 5.05V are coming out (pin 3 - Vo and pin 2 - GND). I have checked the regulator of the microprocessor and it arrives well 5.05 and goes out 3.3V.

 

Thinking that I have done some bad soldering, I have tried only with the power supply on the second YAPA, nothing more. I have connected to the same DC 12V and not even flashing leds! Nothing at all. I have checked the power on board and everything seems to be fine.

 

What can I test more to know what is happening?

 

Thanks in advance,

Mauro.

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