openrcforums

Although many stereo cables will work in a mono jack, there can be issues if the 3 conductor surface area on the plug is off slightly from the mono jacks contact design. A mono plugs 2 conductor surface area will mate properly with a mono jacks contact. I find that many stereo plugs are more tapered...

Maybe post the mix downloaded from your TX that's having trouble and the version of eepe you're using so we can try it.
I'm no expert but having the mix to try would get you a answer or fix here.
SM

There was some mention in some thread about the boards we call v1 and V2 may use different voltage LCDs? V1 5 volt and V2 3.3v. Anyone know anything about this or how to tell? Hopefully this is not true and one less worry. I too ordered a few spare LCDs a few months ago and so far not needed to use ...

Hi Rob, No, same haptic strenght 5, exactly same EEprom values and no reaction of the haptic. And I also tried with another radio I just modified for a friend, same result! r691 works fine and since r699 it's dead. The mod is exactly as recommended and I use this nice vibration motor http://www.rob...

Some rules I live by. Use the NiMh charge mode on your charger (the name of it helps?). Charge less than 1 amp because there is a diode in series with the charge jack usually and it's usually 1 Amp. Unlike Nicads NiMh don't like to be trickle charged so your smart charger knows that when you select ...

Wow just a Schotty Diode! It's worth a try.
Making room on the bench for this and some other projects. Where does all the clutter come from, I know, you have to throw something away!
I believe I read where many brand TXs are open collector so this may work.
SM

Even better news about not needing power Mike. The led was just because I had a battery designed in the small box already. It can go! I'll try it today. The only reason for a non inverting level changer is for use with other brand radios with each other. But this too may not require power. My club p...

The 9x expects to see another 9x as the student Tx along with the 5v ppm data level. Many non 9x brands only output 1.5 to 3 v ppm data. Gruvin has a 1 transistor level changer mod shown on his posted schematics.  I built it and installed it into the 4066s ppm in data line and now I can use many non...

No free Internet access if any at all so ham radio came to the rescue.
SM

Another of my hobbies. Reports every 3-5 min 24/7 to the Internet the local weather conditions at the field, no Internet connection or WiFi avsilable. Check the wind before you drive to that remote field. The magic link is ham radio. The protocol used is defined buy   http://www.aprs.org/ The weathe...

Approx $89+$25+ shipping to US. HobbyKing Leaders, t still lower, today that is.
Good to see there are more options. Wonder what processor and board layout?
SM

Rob Thomson wrote:Here you go...

viewforum.php?f=52

I'm going there, thanks.
SM

Ok. Next we need detailed reports on updating all firmwares on tx modules and all receivers to date, how and why and when? This includes the hub and the removal of SMD parts if an update is required. I plan to do the updates and see what I end up with? I'll keep and post notes and progress when I fi...

Is there, or can there be a Frsky topic Rob? For now here's my request to discuss. Help! I have a lot of Frsky 2way devices, DJT,D8R-xxx, and the HUB. I'm reading I must do some FW updates to use some newer features. I own the following, The original  RS232/Serial PC Cable for FrSky Two-way Telemetr...

By accident have 4 Frsky cell measurement devices/sensors on order so I guess I better learn how to use them. It was a midnight iPod order and I was asleep at the finger. No big deal since I'm a member of a large rc club and will sell off the extras at my cost. So I understand that I'll have to upda...

Ok please bring me up to date?
Is open9x another FW besides all the others, I suspect it is?
How does it relate to er9x and all Mikes work on the Frsky telemetry FW additions he's made?
SM

I find/found that the servo type connector ony life batteris are a not a tight fit. My fix that seems to work is with the tip, carefully one FM pin at a time, I push the connector top to make it smaller through the open pin area where the retainer tab is. By making the shell smaller it grabs the mal...

What revision will have this to try?
SM

Quote of post directly above this one removed by MOD - PLEASE don't quote the post directly above I believe the shunt your referring to is on the 9x board. The center pin is + and the two outside pins go the the 9x boards ground plane common rail. The battery connector FM only needs a center + wire...

I tried to charge as planed through the charge jack with the diode still in line using the LIfe setting on my charger, no balancing. I wanted to test how well it would charge if at the field. What I found was the charger must be fooled, makes sense, ant shut off way too soon. I only had a few hundre...

Quote of post directly above removed by your friendly MOD I agree but found out that all thee big radio co's have had them in the power circuits for years, and years. Many newbees at our field keep blowing the fuses charging backwards and their TX's goes dead! Happens a lot these days it seems. One...

Quote of post directly above removed by your friendly MOD I have no experiance with PTC fuses but as long as their not in the tx power circuit give It a try. We all have done some R&D and learned something new. I shy away from fuses in the actual tx power path but JR and Spektrum for sure use a...

Quote of post directly above removed by your friendly MOD If you remove or jumper the diode consider using a fuse, Futaba uses a 2A fast blow I'm told and Spektrum uses a 3A fast blow. This will save the circuitry if you short the charge jack. Never put the fuse in the actual TX power circuit becau...

Yes, basically that's the way the HK BL does it through the in Line connector assembly provided with the BL. I'm leaning towards just using he BL, a 470 ohm resistor, and a fet with the voltage coming from the battery. Your charge point is the right idea because it should be battery. I was thinking ...

I use SP programmers but did order and solder in a HK USB programmer to know what to expect if asked by club members. It went well but I have a few pointers that other posts may have missed. I used the shorter cable that came with the programmer and just cut the cable off at the end with the two con...

FWIW, I am using 470 ohms and driving the backlight directly from the MCU pin so it is only getting 5 volts. A FET is not required this way and the MCU can easilly handle this load. Pretty standard to drive LEDs from mcu pins with 470 ohm resistors. Seems plenty bright to me this way, not sure I wo...

Quote from post above removed by your friendly MOD I too want to make a donation. There are so many that make this all possable I'm not sure how much? I know a set value is something that is refrained from for good reasons. I think we the "users" have to put a value on without creating a ...

Led data sheets may give a current vs brightness graph? I've never look to see, just faked it. Current flow through LEDs determine the brightness and the voltage is needed to start current flow. I find that 1.3 volts seems to be a good place to start but I'm sure that's debatable and others will mor...

Good idea. My location is added (actually didn't know where to enter it before I did a more thorough look at my profile). I'm still sticking with my secret alias, however! :roll: Ted I think a state, or city is OK at least as many of us have listed. If I really want to find someone I just bribe a t...

As with all these things, it is possible, we might need to find somewhere to store (in EEPROM) the limit. This might be Tx specific rather than model specific. I'll add investigating it to my todo list! Mike. Thanks Mike for even thinking about it. Strange requests but cutting edge options. If I un...