LCD Backlight for Spektrum DX6i/DX7/JR XP9303 - Low Power Design

ptt81 · Jun 27, 2009, 02:52 PM

This is what I have been developing and it turns out great. Here are some exaple of on/off stages for the DX7 backlight.

DX7 version power consumption is very little, 29mah for white and 35mah for blue-green. With such low power drawn, the light can be on all the time and you will hardly notice any difference in power drawn. The light wired directly to the main switch so it'll look complete stock once installed.

Updated 07/09/09: Added JR XP9303 mod I have just done for a local friend. JR XP9303 will draw about 38mAh, still very low to have it stay on all the time. If you're using stock Spektrum 1500mAh NiMH pack, I highly recommend upgrade to the 2600mah Lipo pack you will be amaze how long it'll last backlight or no backlight.

Updated 08/11/09: Added DX6i mod. If you're using stock Spektrum 1500mAh NiMH pack, ditch them and buy some Sanyo Eneloop 2000mAh batteries, these are hybrid NiMH-Alkaline like they drain very slowly like Lipo and has ton of juice.

I'm now working on surface radios starting DX2.0 and then DX3S/DX3R. More to come...

HobbyCNC · Jun 28, 2009, 07:12 AM

Quote:

Originally Posted by ptt81

This is what I have been developing and it turns out great. Here are some exaple of on/off states for the DX7 backlight.

Power consumption is very little, 29mah for white and 35mah for blue-green. With such low power drawn, the light can be on all the time and you will hardly notice any difference in power drawn. The light wired directly to the main switch so it'll look complete stock once installed.

I can mustom made it with "any" amp drawn. Lower amp, lower brightness (just enough to see in low light condition) or higher amp higher brightness (make it easier to see in bright light condition).

Im currently working on a DX2.0, DX6i, and JR 9303 and more radio if I can get my hand on them.

How much $ ?

Dave

376782 · Jun 28, 2009, 09:16 AM

Quote:

Originally Posted by ptt81

This is what I have been developing and it turns out great. Here are some exaple of on/off states for the DX7 backlight.

Power consumption is very little, 29mah for white and 35mah for blue-green. With such low power drawn, the light can be on all the time and you will hardly notice any difference in power drawn. The light wired directly to the main switch so it'll look complete stock once installed.

I can mustom made it with "any" amp drawn. Lower amp, lower brightness (just enough to see in low light condition) or higher amp higher brightness (make it easier to see in bright light condition).

Im currently working on a DX2.0, DX6i, and JR 9303 and more radio if I can get my hand on them.

Are you using EL panels or LED panels? I am very interested in trying out some LED panels as I find the EL panel is not bright enough in daylight. If you are using EL panels do you have an adjustable inverter.

Thanks,

Dave

ptt81 · Jun 28, 2009, 03:59 PM

I use EL panel, this mod is intended to help you see in "low light" condition for night flying, not in daylight condition. I took those pictures in a room with 4 bright daylight flourescent bulbs and it is still bright enough to see. If the backlight is too bright, the text will actually become harder to see, and the noises from inverter is louder and will draw more power. This is the best result I have come to after many tests, brightness is just enough to see and law very little power.

Im currently working on a few local friends radios including a DX6i and JR 9303. I will be posting more pictures when im done with them.

ptt81 · Jun 28, 2009, 04:06 PM

Quote:

Originally Posted by HobbyCNC

How much $ ?

Dave

I actually need to find out how many people are interest in this mod, then I will be able to offer a DIY kit w/full instruction. The parts needed have to be purchased in bulk in order to keep the price reasonable. If you need one right now, please PM me I'll see what I can do.

ptt81 · Jul 07, 2009, 02:52 AM

I have enough parts to build 5 kits for DX7 if anyone is interested

init4fun · Jul 07, 2009, 12:50 PM

...

ptt81 · Jul 07, 2009, 07:41 PM

Please use PM since this is not a buy/sell thread. Thanks

KHochstein · Jul 07, 2009, 07:57 PM

How much for blue backlight for 9303

Thanks

ukpaul · Jul 07, 2009, 08:24 PM

Price for blue for a DX7 please.

Cheers.

ptt81 · Jul 07, 2009, 11:59 PM

Guys, please email or PM me, its really hard for me to keep looking into my thread for new posts. I'd appreciate it

ptt81 · Jul 08, 2009, 01:57 PM

all PMs replied

JR 9303 kit will be ready in a few days, im testing the final result but its comming up quite nice as i've expected so far.

init4fun · Jul 08, 2009, 03:33 PM

...

ptt81 · Jul 08, 2009, 04:34 PM

Thanks. What is even better if you use the 2600mah Lipo Pack, it lasts like forever. NiMH pack always drain faster than Lipo by itself even when not in use, no NiMH pack can outlast Lipo. Got your PM and replied as well. Hope I get some feedbacks on these soon. All my local friends love this once I installed for them, one of them keep turning the switch on/off just to see the light...lol

init4fun · Jul 08, 2009, 05:28 PM

...

Jun 27, 2009, 02:52 PM	#1
ptt81 www.DFXHobbies.com Join Date: Feb 2005 Location: TX Posts: 97	LCD Backlight for Spektrum DX6i/DX7/JR XP9303 - Low Power Design This is what I have been developing and it turns out great. Here are some exaple of on/off stages for the DX7 backlight. DX7 version power consumption is very little, 29mah for white and 35mah for blue-green. With such low power drawn, the light can be on all the time and you will hardly notice any difference in power drawn. The light wired directly to the main switch so it'll look complete stock once installed. Updated 07/09/09: Added JR XP9303 mod I have just done for a local friend. JR XP9303 will draw about 38mAh, still very low to have it stay on all the time. If you're using stock Spektrum 1500mAh NiMH pack, I highly recommend upgrade to the 2600mah Lipo pack you will be amaze how long it'll last backlight or no backlight. Updated 08/11/09: Added DX6i mod. If you're using stock Spektrum 1500mAh NiMH pack, ditch them and buy some Sanyo Eneloop 2000mAh batteries, these are hybrid NiMH-Alkaline like they drain very slowly like Lipo and has ton of juice. I'm now working on surface radios starting DX2.0 and then DX3S/DX3R. More to come... Attached Thumbnails DX7 Blue-green Backlight OFF 23.0 KB · Views: 184 DX7 Blue-green Backlight ON 61.3 KB · Views: 295 DX7 White Backlight OFF 18.4 KB · Views: 163 DX7 White Backlight ON 48.0 KB · Views: 256 JR 9303 Blue Backlight - OFF 61.3 KB · Views: 90 JR 9303 Blue Backlight - ON 58.2 KB · Views: 174 JR 9303 Blue Backlight - ON - Closeup 39.9 KB · Views: 129 DX6i Blue Backlight - OFF 58.9 KB · Views: 52 DX6i Blue Backlight - ON 63.9 KB · Views: 127 DX6i Blue Backlight - ON - Closeup 24.6 KB · Views: 120 Last edited by ptt81; Aug 11, 2009 at 08:09 PM.

Jul 07, 2009, 12:50 PM	#7
init4fun AMA 80274 Join Date: Mar 2008 Location: Wrentham Mass. Posts: 781	... Last edited by init4fun; Jul 27, 2009 at 01:40 PM.

Jul 07, 2009, 07:41 PM	#8
ptt81 www.DFXHobbies.com Join Date: Feb 2005 Location: TX Posts: 97	Please use PM since this is not a buy/sell thread. Thanks Last edited by ptt81; Jul 08, 2009 at 12:00 AM.

Jul 08, 2009, 01:57 PM	#12
ptt81 www.DFXHobbies.com Join Date: Feb 2005 Location: TX Posts: 97	all PMs replied JR 9303 kit will be ready in a few days, im testing the final result but its comming up quite nice as i've expected so far. Last edited by ptt81; Jul 08, 2009 at 02:40 PM.

Jul 08, 2009, 03:33 PM	#13
init4fun AMA 80274 Join Date: Mar 2008 Location: Wrentham Mass. Posts: 781	... Last edited by init4fun; Jul 27, 2009 at 01:41 PM.

Jun 28, 2009, 03:59 PM	#4
ptt81 www.DFXHobbies.com Join Date: Feb 2005 Location: TX Posts: 97	I use EL panel, this mod is intended to help you see in "low light" condition for night flying, not in daylight condition. I took those pictures in a room with 4 bright daylight flourescent bulbs and it is still bright enough to see. If the backlight is too bright, the text will actually become harder to see, and the noises from inverter is louder and will draw more power. This is the best result I have come to after many tests, brightness is just enough to see and law very little power. Im currently working on a few local friends radios including a DX6i and JR 9303. I will be posting more pictures when im done with them.

Jul 07, 2009, 02:52 AM	#6
ptt81 www.DFXHobbies.com Join Date: Feb 2005 Location: TX Posts: 97	I have enough parts to build 5 kits for DX7 if anyone is interested

Jul 07, 2009, 07:57 PM	#9
KHochstein Registered User Join Date: Feb 2003 Location: Mineapolis, MN Posts: 109	How much for blue backlight for 9303 Thanks

Jul 07, 2009, 08:24 PM	#10
ukpaul Registered User Join Date: Aug 2006 Posts: 579	Price for blue for a DX7 please. Cheers.

Jul 07, 2009, 11:59 PM	#11
ptt81 www.DFXHobbies.com Join Date: Feb 2005 Location: TX Posts: 97	Guys, please email or PM me, its really hard for me to keep looking into my thread for new posts. I'd appreciate it

Jul 08, 2009, 04:34 PM	#14
ptt81 www.DFXHobbies.com Join Date: Feb 2005 Location: TX Posts: 97	Thanks. What is even better if you use the 2600mah Lipo Pack, it lasts like forever. NiMH pack always drain faster than Lipo by itself even when not in use, no NiMH pack can outlast Lipo. Got your PM and replied as well. Hope I get some feedbacks on these soon. All my local friends love this once I installed for them, one of them keep turning the switch on/off just to see the light...lol

Jul 08, 2009, 05:28 PM	#15
init4fun AMA 80274 Join Date: Mar 2008 Location: Wrentham Mass. Posts: 781	... Last edited by init4fun; Jul 27, 2009 at 01:41 PM.

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