Search found 144 matches

by flybabo
Tue Nov 17, 2015 1:52 am
Forum: er9x
Topic: er9x development
Replies: 3129
Views: 452475

Re: er9x development

If LRS doesn't need the Frsky telemetry, we can "recylce" the RAM used by the telemetry code by disabling the telemetry function when the LRS protocol is selected.
by flybabo
Thu Nov 05, 2015 8:11 pm
Forum: Hardware
Topic: 9Xtreme Upgrade Board for 9x Radios
Replies: 570
Views: 81835

Re: 9Xtreme Upgrade Board for 9x Radios

If you have WiFi/BT on your 2.4GHz transmitter, it will definitely affect the transmitter's range one way or another. Adding more equipment using the same 2.4GHz ISM band, it will increase the noise floor of the band even though it doesn't directly interfere the other ISM devices in the short range ...
by flybabo
Mon Sep 14, 2015 9:43 pm
Forum: Hardware
Topic: 9Xtreme Upgrade Board for 9x Radios
Replies: 570
Views: 81835

Re: 9Xtreme Upgrade Board for 9x Radios

To be perfectly honest, I've been so busy I missed that project. If you're going to post here to draw people's attention there, one might think its only fair to do the same there, but maybe that's just me. :) I posed the question because there's no activity in this thread recently while several gen...
by flybabo
Mon Sep 14, 2015 6:19 pm
Forum: Hardware
Topic: 9Xtreme Upgrade Board for 9x Radios
Replies: 570
Views: 81835

Re: 9Xtreme Upgrade Board for 9x Radios

Is this project got affected by AR9X project?
http://www.rcgroups.com/forums/showthread.php?t=2479552
All of a sudden, there're multiple products for this niche market :)
by flybabo
Fri Sep 04, 2015 8:17 pm
Forum: er9x
Topic: Arduino Due add on to 9X
Replies: 164
Views: 26006

Re: Arduino Due add on to 9X

SkyNorth wrote:The board is 93mm x 50mm
Perfect!
by flybabo
Fri Sep 04, 2015 12:12 am
Forum: er9x
Topic: Arduino Due add on to 9X
Replies: 164
Views: 26006

Re: Arduino Due add on to 9X

What's the dimension of the board?
by flybabo
Thu Sep 03, 2015 7:17 pm
Forum: Hardware
Topic: 9Xtreme Upgrade Board for 9x Radios
Replies: 570
Views: 81835

Re: 9Xtreme Upgrade Board for 9x Radios

Does this board has extra ports available for direct LCD interface?
Parallel LCD needs 14 ports (5 control + 8 data + 1 backlight control).
Serial LCD needs 6 ports (4 control + 1 data + 1 backlight control).
by flybabo
Thu Jun 11, 2015 7:57 pm
Forum: er9x
Topic: Version confused
Replies: 3
Views: 1345

Re: Version confused

Use er9x-128.hex - it has everything you want.
er9x-2561.hex for 2561 processor.
by flybabo
Sun May 10, 2015 6:11 pm
Forum: er9x
Topic: Arduino Due add on to 9X
Replies: 164
Views: 26006

Re: Arduino Due add on to 9X

Yes, there's a cheap, er9x compatible 128x64 LCD module with a resistive touch panel. Only catch is the screen size is just 1.8" :) http://www.buydisplay.com/default/1-8-inch-128x64-lcd-module-display-w-touch-panel-rgb-backlight-7-colors I considered to put this LCD on my vintage radio but I was not...
by flybabo
Tue Apr 28, 2015 9:36 am
Forum: er9x
Topic: er9x development
Replies: 3129
Views: 452475

Re: er9x development

Mike, when do you plan to migrate to GitHub?
by flybabo
Sat Apr 25, 2015 9:59 pm
Forum: er9x
Topic: Arduino Due add on to 9X
Replies: 164
Views: 26006

Re: Arduino Due add on to 9X

I rather use a 5V switching regulator such as 5V UBEC or a buck DC-DC converter which wastes less power than a linear voltage regulator.
by flybabo
Mon Apr 20, 2015 8:22 pm
Forum: er9x
Topic: Arduino Due add on to 9X
Replies: 164
Views: 26006

Re: Arduino Due add on to 9X

I see - it's not using an SPI interface.
I think narrow-pitch (0.05") 9 soldering pads for 9-wire ribbon cable are good enough for SDIO interface if you can put them without increasing the length.
Can you move the processor to slight left to make a room for the soldering pads ? ;)
by flybabo
Mon Apr 20, 2015 6:57 pm
Forum: er9x
Topic: Arduino Due add on to 9X
Replies: 164
Views: 26006

Re: Arduino Due add on to 9X

Is the "spare" SPI interface very same SPI interface used for on-board SD card?
If not, I need to modify the firmware to hook up an external SD card adapter, right?
by flybabo
Mon Apr 20, 2015 6:48 pm
Forum: er9x
Topic: Arduino Due add on to 9X
Replies: 164
Views: 26006

Re: Arduino Due add on to 9X

Brent, looks good - can't wait! It would be nice if you can add 6 more soldering pads for an external MicroSD card adapter. Even though on board SD card can be accessible through the USB port, an external adapter allows us removing/inserting the card without opening the case. It looks like potential...
by flybabo
Sat Apr 18, 2015 2:37 am
Forum: er9x
Topic: Arduino Due add on to 9X
Replies: 164
Views: 26006

Re: Arduino Due add on to 9X

UC1701 and ST7565 LCD controllers are register compatible - i.e. you can use this LCD without modifying 9x LCD driver code. If you need just one unit, it's cheaper if you buy it from buydisplay.com (EastRising) eBay store. http://www.ebay.com/itm/Slim-2-8-128x64-Graphice-LCD-Display-Module-w-Metal-P...
by flybabo
Thu Apr 16, 2015 6:41 pm
Forum: er9x
Topic: Arduino Due add on to 9X
Replies: 164
Views: 26006

Re: Arduino Due add on to 9X

STM32F discovery board? I don't think it will fit to 9x case but the price is good. http://www.st.com/st-web-ui/static/active/en/resource/technical/document/user_manual/DM00039084.pdf http://www.ebay.com/itm/ST-STM32F4-Discovery-USB-Development-Tool-USA-STM32F4DISCOVERY-STM32-ARM-Board-/160731358953...
by flybabo
Thu Apr 16, 2015 12:33 am
Forum: er9x
Topic: Arduino Due add on to 9X
Replies: 164
Views: 26006

Re: Arduino Due add on to 9X

Brent, are those 0.1" header pins aligned to 0.1" grid of your layout editor? If all the header pins are aligned to the grid, I can make a shield board using a 0.1" perf board. What's in the other side of the PCB? You may put soldering pads/pins for surface mounted JST connectors that can be used fo...
by flybabo
Wed Apr 15, 2015 9:18 pm
Forum: er9x
Topic: Arduino Due add on to 9X
Replies: 164
Views: 26006

Re: Arduino Due add on to 9X

Yes, the radio based on the new board will be firmware compatible if you make your radio by having the same type of LCD, same pinouts for all the pots and switches, ... you should make your shield board like Brent's 9x shield. Brent, does (sky-core9x + 9x shield) combination cost less than your old ...
by flybabo
Wed Apr 15, 2015 7:10 pm
Forum: er9x
Topic: Arduino Due add on to 9X
Replies: 164
Views: 26006

Re: Arduino Due add on to 9X

Yeah.. it's a tough business to produce a hobby product in NA. Even more, making a working board is one thing and developing a firmware for this new platform is another thing unless we make a radio based on this board compatible with Ersky9x or 9XR-PRO. Practically speaking, Mike is the only one wor...
by flybabo
Tue Apr 14, 2015 6:00 pm
Forum: er9x
Topic: Arduino Due add on to 9X
Replies: 164
Views: 26006

Re: Arduino Due add on to 9X

The board could be shaved down to 1.9" but no smaller .. you just cant fan out the pins of the 100 pin ARM chip any smaller. Putting parts on the other side will not change the width , and those parts have to be glued in place to pass through the oven.. -Brent The thickness of the aluminum sheet is...
by flybabo
Tue Apr 14, 2015 5:22 am
Forum: er9x
Topic: Arduino Due add on to 9X
Replies: 164
Views: 26006

Re: Arduino Due add on to 9X

It would look something like this ... SKY9X_CORE-3D.pdf This board may attract those who want to computerize vintage metal box transmitters. Single most popular conversion platform is MicroStar2000 but IMHO it's little bit outdated. http://mstar2k.com/ http://50.62.233.209/pictures I've also conver...
by flybabo
Sat Apr 11, 2015 11:41 pm
Forum: er9x
Topic: Audio (voice) - Stock 9X PCB
Replies: 4092
Views: 531943

Re: Audio (voice) - Stock 9X PCB

Mike, when do you plan to commit the latest amod328 before moving it to GitHub?
I'd like to merge my experimental code to both amod328 and just released r817 er9x for my custom setup.
Thanks.
by flybabo
Wed Apr 01, 2015 6:19 pm
Forum: er9x
Topic: er9x development
Replies: 3129
Views: 452475

Re: er9x development

That's why I sold my 9XR-Pro. :mrgreen: I bought a 9XR-Pro to take out the main board for my Pro-Line single stick retro-fitting project. After I realized that we could put even more flexibility on the 9X by enhancing the sound card and 9x firmware, I decided to stick with 9XR board + sound card opt...
by flybabo
Wed Apr 01, 2015 12:48 am
Forum: er9x
Topic: er9x development
Replies: 3129
Views: 452475

Re: er9x development

I don't think it will affect much of usability even if you omit the switch configuration menu.
eepe is there to do such a job :)
by flybabo
Tue Mar 31, 2015 7:27 pm
Forum: er9x
Topic: Audio (voice) - Stock 9X PCB
Replies: 4092
Views: 531943

Re: Audio (voice) - Stock 9X PCB

5V SD card just has a 3.3V LDO and a 74HV125 logic level shifter. Since Megasound board also has a 3.3V LDO, 5V SD card should not draw much extra current as the level shifter consumes very little current. My set up is based on a 9XR main board + Sound card based on Martin's PCB running at 5V 20MHz ...
by flybabo
Mon Mar 30, 2015 11:04 pm
Forum: er9x
Topic: Audio (voice) - Stock 9X PCB
Replies: 4092
Views: 531943

Re: Audio (voice) - Stock 9X PCB

Thanks for the explanation.
What I interpret is: if the sound card send out a bulk of serial data in uncontrolled manner, it may confuse connected Avrdude.
Ok, I've got what I wanted to know - let's worry about it later :)
by flybabo
Mon Mar 30, 2015 6:54 pm
Forum: er9x
Topic: Audio (voice) - Stock 9X PCB
Replies: 4092
Views: 531943

Re: Audio (voice) - Stock 9X PCB

I don't have any problems. I'm using the transistor inverters and connecting to my PC using a USB to serial (RS232) adapter. I only connect this, via a 3-pin connector in the battery bay, when I need it. Mike. What's the meaning of "...Not using the trim switch wasn't working at one point because t...
by flybabo
Mon Mar 30, 2015 3:25 am
Forum: er9x
Topic: Audio (voice) - Stock 9X PCB
Replies: 4092
Views: 531943

Re: Audio (voice) - Stock 9X PCB

When the sound card communicates with the main board back and forth, connected serial adapter must be in a mute state. If I understand correctly, when Mike experimented various things, it sometimes confused the serial adapter and it caused a problem communicating between the sound card and the main ...
by flybabo
Sun Mar 29, 2015 11:05 pm
Forum: er9x
Topic: Audio (voice) - Stock 9X PCB
Replies: 4092
Views: 531943

Re: Audio (voice) - Stock 9X PCB

No, the same firmware with a different bootloader. After flashing the SD bootloader using a USBASP, all I need is to copy the same new firmware to SD card and plug it in whenever I get the new firmware. Also, once we establish a reliable serial link between the mainboard and the sound card, we may b...
by flybabo
Sun Mar 29, 2015 7:49 pm
Forum: er9x
Topic: Audio (voice) - Stock 9X PCB
Replies: 4092
Views: 531943

Re: Audio (voice) - Stock 9X PCB

Yeah it would be nice to send the firmware file to the card over serial and then update the module. But is it really needed? I mean how often will we update the voice module? And it is possible to do it over serial, so... I am just installing an Atmega2561 in one of my radios and will power it usin...

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