ERSKYTx (was ersky9x) Questions

erskyTx runs on many radios and upgrade boards
ersky9x was a port of er9x for use on the sky9x board.
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SkyNorth
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ERSKYTx (was ersky9x) Questions

Post by SkyNorth » Tue Dec 27, 2011 1:09 pm

Hi,
We can use this area to talk about the new board design.
-Brent

Here is a Feature List:
input voltage 6.5 - 16 volts (7.2V ideal)
Atmel SAM3S ARM Cortex M3 Microprocessor
256K of Eprom , 48K Ram
4mb EEprom - For Model /sound storage
Support for Optrex display F-55472GNFJ-SLW-AAN
Built-in external USB socket for Programming / interface.
2 external RS232 Serial Ports.
PWM control of LED backlight . (dimmable)
1/2 Watt Mono Audio Amp , with digital volume control
8 ohm speaker output with auto switch over headphone jack output.
Micro SD card socket with 4 bit high speed connection to ARM
Support for RN-42 Bluetooth Module (spot for external TTL serial connection)
Haptic output connector , with PWM drive.
ATTiny167 AVR micro for RTC and 12 external switch inputs/encoders or up to 10 A/D inputs , can be battery backuped
External I/O connector with 4 lines one with DAC output
I2C output connector + spare port pin.
5V output.
On board current sensor , to measure power usage on battery
Second PPM OUTPUT
Software control of Power - off
ERSKY9x_Rev_Beta_Top_PCB.JPG
ERSKY9x Beta
ERSKY9x_Rev_Beta.PDF
ERSKY9x Beta Schematics
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Last edited by SkyNorth on Tue Feb 07, 2012 12:17 pm, edited 9 times in total.


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Re: ERSKY9x Questions

Post by Rob Thomson » Tue Dec 27, 2011 5:05 pm

Sweet.. looking forwarded to building up this thread!
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ERSKY9x Questions

Post by Rob Thomson » Tue Dec 27, 2011 5:30 pm

You should get done pics of the new board up here & some notes about it. We can then add it as a sticky!


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Re: ERSKY9x Questions

Post by kaptain_zero » Tue Dec 27, 2011 11:35 pm

Links and part numbers for the additional stuff, such as the alternate LCD and Bluetooth module etc. could be added to the sticky.

Looking at the changed LCD, I don't see a connector on the ribbon cable so I'm assuming the user would have to install one, and if so, which one?

Regards

Christian
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-- Red Green

SkyNorth
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Re: ERSKY9x Questions

Post by SkyNorth » Tue Dec 27, 2011 11:54 pm

The Lcd ribbon fits into a connector on the board....just like the stock one..

The module needs to be taken apart . The LCD glass is double sided taped into
LED backlight.

The Plastic frame is keeping the LCD from sitting up high enough in the Display window on the radio.

The Glass fits in place , like the old one. and LED backlight sits over top the LCD.
A few dabs of hot glue holds things in place.

The Bluetooth module comes from Sparkfun Electronics #RN-42
http://www.sparkfun.com/products/10253

Brent


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Re: ERSKY9x Questions

Post by PNaz » Wed Dec 28, 2011 5:02 pm

Hi Brent

Will the new board take a higher resolution or larger display? I was originally planning to put it in a JR10X that a friend gave me. The original Flysky display would have been too small to fit in the JR10X display hole. I have since given up on that project because the 10X was supposed to be dead for the last 10 years but I got it working again so gave it back to my friend. If I get another project like that it would be good to have the option of larger screens. Higher resolution probably requires changes to the firmware and larger display would increase power consumption.

Regards
Paul

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Re: ERSKY9x Questions

Post by SkyNorth » Wed Dec 28, 2011 7:10 pm

There is a spot on the board for a 16 pin (0.05") ribbon cable.
This contains all the LCD signals , plus a extra chip select signal.
So you could tie into this and drive a larger LCD or two lcds.
There is also a I2C port , which could also tie into some LCD displays.
The Hardware can do this , but the software supports a 64 x128 LCD currently.

I looked at higher resolution displays ...But cost and availability and drop in fit become issues ....

-Brent

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Re: ERSKY9x Questions

Post by camachogr » Wed Dec 28, 2011 10:27 pm

SkyNorth Hey, great job congratulations. Looking at the diagrams encounter some common errors
committed to draw connections, for example in the coordinate file C-0 in ERSKY9x_B20.dsn is
better to change the connection on CROSS for T not to give rise to doubts about the "point
connection".
You can tell us what state of development is the software?
Congratulations again and sorry for my English

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Re: ERSKY9x Questions

Post by MikeB » Wed Dec 28, 2011 10:56 pm

I've been writing code to test the board out, most of the hardware is now tested and working. Just started on packaging the hardware drives to make them easy to use. Once that is done, hopefuilly, er9x should port over fairly easily. For best performance, certain variables should be defined to be 32 bits long instead of 8 bits. I'm thinking that if we define a new type of NATIVE_INT or NATIVE_UINT, these could be set for either 8 or 32 bits depending on the processor, then a lot of the code could be kept common.

Mike.
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Re: ERSKY9x Questions

Post by Reacher10 » Thu Dec 29, 2011 11:33 pm

This might seem like a no brainer but does the board have reverse polarity protection? I was just changing my batt in mine today and that occured to me.

I think other things might get fried but is the board protected?

Also when I get back I'll post a pic of the ErSky 9X logo I came up with. I spent hours looking for the origanl font without success.

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Re: ERSKY9x Questions

Post by Mechcondrid » Fri Dec 30, 2011 5:01 pm

how much is everything to source? (i.e. all the parts needed?)

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Re: ERSKY9x Questions

Post by MikeB » Fri Dec 30, 2011 7:30 pm

Does this look at all familar?
Ersky9x-1.jpg
The new ErSky9X board running test code. Just a taster, lots more to do to have it running properly. Picture is a bit poor, not enough lighting, sorry. Picture is better, I turned a light on!

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ERSKY9x Questions

Post by Rob Thomson » Fri Dec 30, 2011 7:39 pm

Looking good!


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Re: ERSKY9x Questions

Post by Hasse.69 » Fri Dec 30, 2011 10:50 pm

@ Skynorth , Is it possible that this cheapie bluetooth module will do?

http://www.ebay.com/itm/30ft-3-3VDC-Wir ... 53ea973181

Best regards , Hasse.

:oops: Edit , not compatible..... :oops:
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Re: ERSKY9x Questions

Post by cre8tiveleo » Sat Dec 31, 2011 1:00 am

such a beautiful board! Looking good!!

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Re: ERSKY9x Questions

Post by RCPlaneHobby.com » Sat Dec 31, 2011 5:12 am

is there a link to this board on the wiki yet? I'd love to see a feature list and price

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Re: ERSKY9x Questions

Post by SkyNorth » Sat Dec 31, 2011 9:30 pm

Reacher10 wrote:This might seem like a no brainer but does the board have reverse polarity protection? I was just changing my batt in mine today and that occured to me.

I think other things might get fried but is the board protected?

Also when I get back I'll post a pic of the ErSky 9X logo I came up with. I spent hours looking for the origanl font without success.

There is a 1N4002 diode as reverse polarity protection , and a 1/2 ohm resistor in the power line ... Resistor should smoke out
and open if there is a reverse polarity.

One worry is that some of these batteries , can deliver 100's of AMPs in a short circuit , This could vapourize the diode junction and open it , in most cases the
diode would short out, but if it opened it wont do much good.

-Brent

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Re: ERSKY9x Questions

Post by SkyNorth » Sat Dec 31, 2011 9:34 pm

Mechcondrid wrote:how much is everything to source? (i.e. all the parts needed?)
The board is being sold assembled ...for $85.

-Brent

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Re: ERSKY9x Questions

Post by SkyNorth » Sat Dec 31, 2011 9:37 pm

RCPlaneHobby.com wrote:is there a link to this board on the wiki yet? I'd love to see a feature list and price
We are currently doing a Beta run of 25 boards , there are a couple left ...price will be $85 + shipping.

I will write up a Spec sheet on the new board...

-Brent

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Re: ERSKY9x Questions

Post by SkyNorth » Sat Dec 31, 2011 9:42 pm

Hasse.69 wrote:@ Skynorth , Is it possible that this cheapie bluetooth module will do?

http://www.ebay.com/itm/30ft-3-3VDC-Wir ... 53ea973181

Best regards , Hasse.
The module looks close...but I dont think it is pin compatible . I have provided a 4 pin header with 3.3V , ground , RXD3 , and TXD. so you can always solder the four wires to module , and plug into the header on the board . A couple of dabs of hot glue could hold it in place.

-Brent

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Re: ERSKY9x Questions

Post by wallaguest1 » Mon Jan 02, 2012 10:02 am

hi

in witch way the optrex display is better? pixel response time?

what about the 5v reg? they are LDO ? will the new board allow 2s lipos to run at less volts?

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Re: ERSKY9x Questions

Post by MikeB » Mon Jan 02, 2012 12:53 pm

The new processor runs from 3.3V, so it is OK down to below 5.5V supply. I'm running the prototype from a bench PSU set to 6.5V, but I have turnd it down to 5.5V and it is still OK.

Mike.
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Re: ERSKY9x Questions

Post by SkyNorth » Mon Jan 02, 2012 1:38 pm

The Dropout on the Regulators is 1.4V max.
The 5V regulator is for the LED Backlight , to keep a constant brightness.
The rest of the board runs at 3.3V
The RF module will dictate the minimum supply voltage.

As Mike said the Board is quite happy at 6.5V , so you could get a full cycle out of a 2S lipo.

The LCD is the closest replacement that is available , and fits the radio.
The Stock Lcd is known to fail , and has very poor contrast. The Optrex LCD are Top
quality units, that can be made to fit .

-Brent

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Re: ERSKY9x Questions

Post by wallaguest1 » Mon Jan 02, 2012 1:55 pm

would be wonderful to have also softer buttons in the boards, so the "click click" is not that hard and noisy :)

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Re: ERSKY9x Questions

Post by cre8tiveleo » Mon Jan 02, 2012 2:45 pm

SkyNorth wrote: The LCD is the closest replacement that is available...
I order replacement lcds from rchobbies. I have a few, just in case. :) *knocks on wood*

Colour lcd... mmmmm... that would be nice. :roll: 8-) :mrgreen:

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Re: ERSKY9x Questions

Post by SkyNorth » Mon Jan 02, 2012 3:44 pm

Here is what the LCD looks like.

-Brent
lcd1.JPG
No Backlight
LCD2.JPG
25% Backlight

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Re: ERSKY9x Questions

Post by Hasse.69 » Mon Jan 02, 2012 7:25 pm

SkyNorth wrote:
Hasse.69 wrote:@ Skynorth , Is it possible that this cheapie bluetooth module will do?

http://www.ebay.com/itm/30ft-3-3VDC-Wir ... 53ea973181

Best regards , Hasse.
The module looks close...but I dont think it is pin compatible . I have provided a 4 pin header with 3.3V , ground , RXD3 , and TXD. so you can always solder the four wires to module , and plug into the header on the board . A couple of dabs of hot glue could hold it in place.

-Brent
But this one should do , don´t you think?
http://www.ebay.com/itm/NRF24L01-Wirele ... 3f10dd3d6e
[img]nrf24l01-1.jpg[/img]
Best regards , Hasse.
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Re: ERSKY9x Questions

Post by wallaguest1 » Mon Jan 02, 2012 7:29 pm

looks good, does the time response of this screen is better than in the stock radio?

i had a jr 3810, and the pixel response was superb compared with the 9x one. Lets just take a look for example when moving the stick in the graph menu of dual rates and expo, its so slow that almost looks an invisible move until you stop it. That kind of thing didn't happen to me in the JR LCD

what about the USB programing? i see the mini usb connector is not wired so the radio is going to need a drill for the usb connection?

thnks

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Re: ERSKY9x Questions

Post by SkyNorth » Mon Jan 02, 2012 8:05 pm

The Bluetooth module needs to have a serial input/output , and must support SSP (simple serial protocol)

-Brent

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Re: ERSKY9x Questions

Post by SkyNorth » Mon Jan 02, 2012 8:22 pm

wallaguest1 wrote:looks good, does the time response of this screen is better than in the stock radio?

i had a jr 3810, and the pixel response was superb compared with the 9x one. Lets just take a look for example when moving the stick in the graph menu of dual rates and expo, its so slow that almost looks an invisible move until you stop it. That kind of thing didn't happen to me in the JR LCD

what about the USB programing? i see the mini usb connector is not wired so the radio is going to need a drill for the usb connection?

thnks
These graphic displays have a very fast data rate. It is most likely slow LCD updates, because of all the math being done with the EXpo functions.

Yes , to access the external connections , you will need to drill some holes.
The External connections are all designed to come out of the bottom of the unit, There are spots on the pcb for internal connectors.
The internal USB connection will fit the Smartie parts USB board.

To keep the price point of the board within reach , seperate connectors and wiring harness were avoided(but could be used)

The Board mounts inside the case, without having to drill holes for the external ports if not needed.

The board also could be programmed through the serial port. So only one hole would have to be drilled , to access the COM2 serial connector.

There is no perfect solution , but by putting the connectors on the board, you have to drill not solder ...and for some this is very good....

-Brent


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