Search found 144 matches

by flybabo
Wed Nov 27, 2013 7:58 am
Forum: er9x
Topic: er9x development
Replies: 3129
Views: 452463

Re: er9x development

Mike,
The getValue(uint8_t i) function returns calibratedStick if i < PPM_BASE.
Is it correct implementation?
Note that the size of calibratedStick array is 7 while PPM_BASE is defined as MIX_CYC3 which is 12.
HT
by flybabo
Fri Nov 15, 2013 8:55 am
Forum: Turnigy 9XR radio
Topic: Need to know this part
Replies: 2
Views: 1089

Re: Need to know this part

Yes. It has both Futaba 6 pin socket and JR type jack.



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by flybabo
Wed Nov 13, 2013 1:47 am
Forum: er9x
Topic: er9x development
Replies: 3129
Views: 452463

Re: er9x development

Serial LCD takes ~42,000 cycles (2.625ms) to refresh the screen.
If I read code correctly, er9x doesn't use interrupt-driven A/D conversion.
Is there any reason? We may save some cycles by using the interrupt notification.
by flybabo
Tue Nov 12, 2013 9:24 pm
Forum: er9x
Topic: er9x development
Replies: 3129
Views: 452463

Re: er9x development

flybabo has been fitting a 9XR main board to an old Proline Tx. He's using a serial LCD (actually OLED) and wrote an alternative driver to allow for this. He sent me the patches and I added it in as a compile option. He said: "There's a group of people building their own transmitters from scratch a...
by flybabo
Sun Nov 10, 2013 8:26 am
Forum: Turnigy 9XR radio
Topic: Christmas is coming
Replies: 80
Views: 21245

Re: Christmas is coming

Retrofitting 9XR board to an old metal box transmitter is like restoring an antique car. It's very, very labor intensive - I had to cut out left connector since 9XR board was too wide for the ProLine case. There's no room for a large LCD display - I had to put a small OLED and modified er9x software...
by flybabo
Sun Nov 10, 2013 4:31 am
Forum: Turnigy 9XR radio
Topic: Christmas is coming
Replies: 80
Views: 21245

Re: Christmas is coming

There is a spare pin in the left / right side connectors. On one side a spare A/D is connected , this input is biased at 1/2 VCC , so it supports a direct connection to a 3 way switch . You could also hook up a multi position switch for flight mode selection ... The connector on the other side , ha...
by flybabo
Mon Feb 04, 2013 9:08 pm
Forum: er9x
Topic: Unused Pins on 9x board-Is there a list?
Replies: 5
Views: 1382

Re: Unused Pins on 9x board-Is there a list?

Unused pins are marked as 'NC' on "er9x.h".
It appears that only available port is PC0.
by flybabo
Tue Oct 23, 2012 10:40 am
Forum: openTx
Topic: Using a serial LCD module
Replies: 27
Views: 6783

Re: Using a serial LCD module

Hi Bertrand,
Do you have any complex model/mixing example?
What's the longest main run time you've ever seen?
Thanks,
HT
by flybabo
Tue Oct 23, 2012 8:54 am
Forum: openTx
Topic: Using a serial LCD module
Replies: 27
Views: 6783

Re: Using a serial LCD module

I bought a Turnigy 9x many months ago and finally soldered a programming connector on the stock board and flashed the latest er9x firmware. If I read STAT2 screen correctly, main took less than 5ms. If open9x took extra 150us, it must be slightly over 5ms. (I'll try open9x this weekend) That means I...
by flybabo
Sat Oct 06, 2012 6:58 pm
Forum: openTx
Topic: Using a serial LCD module
Replies: 27
Views: 6783

Re: Using a serial LCD module

Thanks Mike! I checked out open9x code from google code depository 2 days ago. I have to recheck whether I have up-to-date source code. Do you have any info about slack time per 20ms frame update cycle on er9x? Since original refresh time for parallel LCD was 4ms before you improved, a serial LCD wi...
by flybabo
Sat Oct 06, 2012 11:30 am
Forum: openTx
Topic: Using a serial LCD module
Replies: 27
Views: 6783

Re: Using a serial LCD module

I just modified the innermost for-loop of refreshDisplay() in a straightforward manner: Original byte-wide write loop: for(uint8_t x=DISPLAY_W; x>0; --x) { PORTA_LCD_DAT = *p++; PORTC_LCD_CTRL |= (1<<OUT_C_LCD_E); PORTC_LCD_CTRL &= ~(1<<OUT_C_LCD_E); } Modified for bit-wide write loop: for(uint8_t x...
by flybabo
Fri Oct 05, 2012 7:41 pm
Forum: openTx
Topic: Using a serial LCD module
Replies: 27
Views: 6783

Re: Using a serial LCD module

I roughly calculated runtime required to dump entire frame buffer based on compiled assembly code after I modified refreshDisplay() for a serial LCD module. Each byte of display data writing requires ~100 instructions (not 24). So, approx runtime to refresh entire frame buffer is whopping 6.4ms (=(1...
by flybabo
Thu Oct 04, 2012 9:29 pm
Forum: openTx
Topic: Using a serial LCD module
Replies: 27
Views: 6783

Re: Using a serial LCD module

Kilrah wrote:Same one Romolo showed, just a different adapter PCB :)
Right :D
by flybabo
Thu Oct 04, 2012 9:25 pm
Forum: openTx
Topic: Using a serial LCD module
Replies: 27
Views: 6783

Re: Using a serial LCD module

The LCD driver should not be too complex to write, but all the menus to rewrite would take much more time. So I really suggest you stick with a 128x64 resolution! Bertrand. Yeah, I know it - that's why I'm sticking with 128x64 module. Also, I don't want to (can't?) solder any flex cable - that's wh...
by flybabo
Thu Oct 04, 2012 8:20 pm
Forum: openTx
Topic: Using a serial LCD module
Replies: 27
Views: 6783

Re: Using a serial LCD module

I found one on eBay and it supports both SPI and 6800/8080 style parallel interface.
http://www.ebay.com/itm/130658588870?_t ... 97.c0.m619
Since this module uses SSD1306 COG, the LCD driver should be rewritten.
HT
by flybabo
Thu Oct 04, 2012 6:43 pm
Forum: openTx
Topic: Using a serial LCD module
Replies: 27
Views: 6783

Re: Using a serial LCD module

What about this one ? http://www.adafruit.com/products/326 Ok very small, but have a look on oled displays there are many that can fit with parallel interface http://www.trulydisplays.com/oled/index.html Actually I have been looking for a LCD module with ST7565 controller which is same as the one u...
by flybabo
Thu Oct 04, 2012 8:25 am
Forum: openTx
Topic: Using a serial LCD module
Replies: 27
Views: 6783

Re: Using a serial LCD module

bertrand35 wrote:But why this screen?
Bertrand.
I'd like to replace an analog RF/volt meter of Kraft 7C Tx by this LCD module.
The size of the meter is about 40x25mm and I couldn't find any LCD module
having parallel interface with this size.
HT
by flybabo
Thu Oct 04, 2012 1:22 am
Forum: openTx
Topic: Using a serial LCD module
Replies: 27
Views: 6783

Re: Using a serial LCD module

If I read the code correctly, current implementation writes out the graphics buffer 1 byte at a time since the stock LCD module has a byte-wide data bus connected to PORTA_LCD_DAT[0:7]. If I use a serial LCD like this http://www.ebay.com/itm/12864-128X64-Serial-SPI-Graphic-COG-LCD-Module-Display-LCM...
by flybabo
Wed Oct 03, 2012 10:47 pm
Forum: openTx
Topic: Using a serial LCD module
Replies: 27
Views: 6783

Using a serial LCD module

I'm working on retrofitting a 9x board to an old vintage transmitter (Kraft 7C). I'd like to replace stock LCD by a small 128x64 LCD module with serial mode interface since I don't want to punch a big hole on the beautiful :) metal box. Serial data transmission to the LCD module may slow down refres...
by flybabo
Fri Jul 20, 2012 1:17 am
Forum: er9x
Topic: ST7565R Display from eBay won´t work
Replies: 36
Views: 7084

Re: ST7565R Display from eBay won´t work

Hi Kayle, Did you sort out all the problems and make this thing work? I'm planning to retrofit a 9x board to an old Kraft metal box transmitter. I ordered a small LCD module using ST7565 to put on top of the Tx to replace the stock LCD. http://www.ebay.com/itm/12864-128X64-Graphic-COG-LCD-Module-Dis...
by flybabo
Mon Jun 18, 2012 8:31 pm
Forum: Retro Radios
Topic: Wanted Kraft schematics
Replies: 64
Views: 32664

Re: Wanted Kraft schematics

SM,
Could you PM me your surface mail address?
I have a surprise for you.
HT
by flybabo
Fri May 18, 2012 4:48 pm
Forum: Retro Radios
Topic: Wanted Kraft schematics
Replies: 64
Views: 32664

Re: Wanted Kraft schematics

I have on the highest shelf the my old transmitter bought in the seventies: it is a seven channel 72 MHz AM proportional transmitter, designed and built in Italy by Akiline, a company in Florence (Italy) active till 1981. Since January, when I learnt of the existence of 9x effort, I am mumbling wit...
by flybabo
Fri May 18, 2012 6:59 am
Forum: The Pickled Gnu (The Pub)
Topic: Retrofitting 9x board to vintage transmitter
Replies: 4
Views: 1204

Re: Retrofitting 9x board to vintage transmitter

I may add small circuitry aound analog trims to mimic the digital trims and/or I can hack the code if it's needed. But bigger question is that will ersky9x board fit to old Kraft box. I saw a picture showing a 9x board which is wider than Kraft 4ch sport series Tx box. If it doesn't fit, I have to g...
by flybabo
Thu May 17, 2012 12:03 am
Forum: The Pickled Gnu (The Pub)
Topic: Retrofitting 9x board to vintage transmitter
Replies: 4
Views: 1204

Retrofitting 9x board to vintage transmitter

I'm considering retrofitting 9x main board to one of my vintage transmitters either ProLine-c6 or Kraft-76. I don't want to put a large LCD hole front face of the transmitter - I prefer to put it on the bottom plate if the PCB fits or I'll put it on the rear face. Is there anyone ever have tried thi...

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