Developing a universal module

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19 Feb 2014 07:05 #20572 by nusbr
Replied by nusbr on topic Developing a universal module
I have a question about PCB connector P1.
I dont know where i can connect in the transmitter.
P1 Pinout
1: +5V
2: +3.3V
3: /Reset
4: Mosi
5: Miso
6: Sck
7: GND
8: chip select

the 8s module pinout (using the numbering in the flysky docs):
1: chip select
2: SCK
3: GND
4: MOSI
5: MISO
6: V+
10:Reset

I think that i can get the most signal from modul connector. But V+ is it 5V or 3.3V. where i can get the second supply voltage?

thanks

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19 Feb 2014 14:03 #20580 by PhracturedBlue
Replied by PhracturedBlue on topic Developing a universal module
It installs just like a nrf4L01 module for the most part.
You don't need 5V unless you are connecting a Devo module to the switch (whch you shouldn't on the Devo8). If you did want it you'd get it from the CYRF Module connector which is 5V.

The RESET pin only needs to be hoked up if you are using the Tx as a programmer. My documentation will expect it to be attached to the TCK pin

CSN gets connected to the TMS pin

One note:
The pin ordering for the board is:
2 4 6 8
1 3 5 7
I need to redo the module install documentation completely to be concistent. It is on my to-do list.

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19 Feb 2014 16:49 #20584 by nusbr
Replied by nusbr on topic Developing a universal module
Ok, thanks. I would Layout a PCP who i can Mount in the original devo 8S transmitting Module socket.

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20 Feb 2014 03:57 #20631 by Leather Lung
Replied by Leather Lung on topic Developing a universal module

magic_marty wrote:

MassiveOverkill wrote:

magic_marty wrote: Is there any chance that a current forum member is going to likely assembly some of these and post them for sale? I would really like to have one but i just don't have the time to build one i been working 56 plus hours a week.The extra pay is nice but it really cuts into my spare time for projects..

Thanks all...
<Marty>

I would buy the parts kit, im still trying to figure this stuff out, but I can follow directions and solder.


At the very least I want to stock all the DIY parts for a one-stop shop to obtain all the parts necessary. I can do Deviation flashing no problem but something that I didn't consider when selling them modded is FCC violations so I think to stay safe, only providing DIY parts and not actually physically modding them may be wiser.



That sounds good to me im sure i could find a little spare time to solder it up if i could get everything in a assembly required kit.Please keep us posted when you plan on having the kits available..
thanks..

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22 Feb 2014 22:39 - 22 Feb 2014 22:42 #20762 by SadSack
Replied by SadSack on topic Developing a universal module



Few Q: :)

I've link pads marked in blue to GND but wondering if be Ok to remove link ?

Pins 7/8/9 there not used at all or could they ?


Well looks like it could be done using modules above for Tranis/Turnigy using module case and with external SMA connectors for aerials mount via pcb.

Now I don't know can 5V / 3.3V be brought to module or will need to be added to design or can it be added internally ??

or would alternate form of connection be an idea (removable)?
Attachments:
Last edit: 22 Feb 2014 22:42 by SadSack.

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22 Feb 2014 22:43 #20764 by PhracturedBlue
Replied by PhracturedBlue on topic Developing a universal module
You don't need to tie any pads to ground if youuse the pin header.

Also note that I use a consistent pin numbering in my schematic (same one you use in the xl24l01, not what you used in the WK-21200RF).

I bring both 5V and 3.3V to the universal board. 5V is only for the Walkera module. I'm now using the AWA24S instead which doesn't need 5V

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22 Feb 2014 22:49 #20766 by SadSack
Replied by SadSack on topic Developing a universal module
Oke, I just used pin numbering used in ModuleInstallation.pdf.

I did open your files in Kicad and I really couldn't drive it...

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26 Feb 2014 23:07 #20907 by MassiveOverkill
Replied by MassiveOverkill on topic Developing a universal module
PB, if I pay for the parts and shipping could you send John (who I've asked to join this forum to ask questions directly as I don't want anything to get lost in translation) a working prototype for mass production?

Thanks.

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27 Feb 2014 00:16 #20909 by PhracturedBlue
Replied by PhracturedBlue on topic Developing a universal module
I don't think we're there yet. I think we really need to have more than one user (me) and 2 boards (mine) of the design working and tested before ramping up production. As far as getting a prototype, we can talk about it once the V1.3 boards arrive from China and I have a few spares.

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27 Feb 2014 04:17 #20914 by victzh
Replied by victzh on topic Developing a universal module
@PhracturedBlue, could you publish latest source files for your board? I suspect OSHpark can be faster, so I'd take a chance there.

I searched through deviation repo and did not find it myself.

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27 Feb 2014 06:19 - 27 Feb 2014 06:20 #20916 by PhracturedBlue
Replied by PhracturedBlue on topic Developing a universal module
If using OshPark I recommend this link:
oshpark.com/shared_projects/nNRSCkjI

I didn't post the 1.3 schematics and database since it isn't tested yet. OshPark wass definitely faster in my one datum point. Round trip from OshPark (2 times) <= 7days, Seeed was 9 days from transmit to ship. Maybe because the 0.8mm boards are not as popular though, I dunno.

The only difference is that I added support for the XL2500 module on the 1.3 schematics, whereas the 1.2 only supports the skyartec and Aliexpress module.
I'll likely do a 1.4 to support the 3rd cyrf6936 module too in the near future.

But I don't expect most users to even need the cc2500 module. We only have one protocol it supports so far, so I don't think the 1.3 is that big of a deal, and even for folks just wanting the nrf24L01, it brings the ability to directly control the CE pin which could be interesting.

I haven'[t posted installation instructions for the Tx, and ahve only built the programmer for the devo8 so far, but those are both minor issues I'll be happy to rectify should they be blocking someone.
Last edit: 27 Feb 2014 06:20 by PhracturedBlue.

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27 Feb 2014 07:51 #20918 by victzh
Replied by victzh on topic Developing a universal module
XL2500 - that's what I have for CC2500 module ;-) OK, when it's ready and tested then.

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27 Feb 2014 15:38 #20926 by blackmoon
Replied by blackmoon on topic Developing a universal module
Ordered 1.2 from OSH and the rest of the items from thebay. Now wait, wait, wait...

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28 Feb 2014 00:29 #20942 by MassiveOverkill
Replied by MassiveOverkill on topic Developing a universal module
So we're going to need a color coded 4-pin double-row jumper in 2 lengths. One for internal installation and one for external. I've googled and can't find anything other than white-cabled jumpers. Anyone got any ideas? Thanks.

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28 Feb 2014 03:48 #20947 by PhracturedBlue
Replied by PhracturedBlue on topic Developing a universal module
I work probably use something like this:
www.ebay.com/itm/2M-New-40-Way-Flat-Colo...&hash=item3f2c88e195

Finding 8-pin ribbon cable connectors on ebay is surprisingly difficult. I found these:
www.ebay.com/itm/50Pcs-FC-8P-8-Pin-2-54m...&hash=item1e84f7f64f

Or just use 10-pin female connectors (which will fit fine, with 2 pins hanging out) which are much easier to find.

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28 Feb 2014 20:27 #20991 by MassiveOverkill
Replied by MassiveOverkill on topic Developing a universal module
Thanks PB, I actually found another candidate looking for 'ribbon cable':

www.ebay.com/itm/1-Pcs-Pitch-2-54mm-2x4-...h-30CM-/181045736721

I could probably cut it in half to make 2 cables.

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02 Mar 2014 01:19 #21056 by briareos7777
Replied by briareos7777 on topic Developing a universal module
For the NRF24L01+PA+LNA module, does anybody know where to get the antenna for it?

Or would there be a way to share the antenna from the CYRF6936 module in this universal module setup?

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02 Mar 2014 01:35 #21058 by PhracturedBlue
Replied by PhracturedBlue on topic Developing a universal module
no you cannot share an antenna with this design. The only way we could support that would be a custom RF module with an integrated RF switch. There are many reasons that is unlikely to happen anytime soon.

If you search ebay for UFL or u.fl antennas you'll find the micro-connector variant. If you are looking for the screw-type, I think you want to look for 'SMA' type antennas.

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02 Mar 2014 02:53 #21060 by briareos7777
Replied by briareos7777 on topic Developing a universal module
I ordered this for the nrf24L01 module:

www.ebay.com/itm/4Pcs-IPEX-UFL-to-RP-SMA...&hash=item4acdaa3dcb


For the antenna itself, I see the following on ebay:
New 2.4GHz 9 dBi Wireless Antenna Booster WLAN RP-SMA WIFI

and

6dbi 6db RP-SMA sma antenna for wifi wireless WLan router AP wlan network card

They look like the sma connector is female, so it would not work with what I ordered above.

Which dBi would be best for the nrf24L01 module? I have an extra devo 8s antenna also, which has a male sma connector (should work with the ufl connector i bought above) would. Would the devo 8s antenna be ok with the nrf24L01 module?

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