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Agreed Reinhard, if one wants to stick with AA cells, solder or otherwise fix a pack together. I would not use that plastic 8cell carrier that comes with the 9x - not worth the risk. Maybe you could find a different 8cell carrier that is more robust and mechanically sized correctly, but even that's ...

I only have experience with RealFlight 6.0 and 6.5. For about $200 in the USA, you get the sim with a linked USB Futaba-style controller included. It is pretty realistic for both planes and helis. Sounds expensive, but as you said will save major cash in the long run. For helis only I've heard good ...

+1
1500mAh LiFe and 9x is a perfect match. Those 8pack battery cases are not reliable, let alone the battery chemistry tricks that NiCd and NiMH play...

regarding voltages, you could always use a switching boost regulator to give enough potential to drive more LEDs. The current draw thru a bunch in series is low, but you do need a higher voltage...

Good job dude! Good luck on your school project!

Ozzy, FWIW I briefly explained how Chip Quick works in this post. You don't need a high power soldering iron, the Sn-Bi solder does retain heat long enough and has a very low solidus temp which gives the operator time to remove the chip.

that's for the project you're working on, right? Some of the resistor values seem to fit within their idea of tolerance, example R6=10k or 9.1k; within +/-10%. However R4, R5 and R8 (the important one) were off my a mere 100%! I wish you best of luck, frankly it seems a bit of a gamble. My boards al...

PROBLEM SOLVED. Thanks thomas9x for the link to your page about this issue with this programmer. I followed your lead and replaced the 220ohm 4-pack with 4 discrete, and very short 24AWG tin plated bus wires. I gots floaties in my eyes and a shake in my hands...It was some careful soldering, but I d...

@bluesteel212, can you physically move the right stick up/down/left/right or is it stuck? I'm not sure you're saying the stick is physically stuck or if it does move but you don't see any response from the radio (changing values on the LCD screen). Please confirm.

Even when contracting the manufacturing, you have a gerber, a schematic, a BOM, a drill file - i.e. a specification. It seems to me someone is playing roulette with the SMD pick-and-place machine reels! It's clearly automated paste, place and soldering. These 4 parts came from the same fleebay vendo...

Unique features, non-working programmer, left, batch2: ATmega8L-8AU micro R8=221 4-pack resistor R4=R5=222 R6=912 DSCN2547_1.JPG DSCN2543_1.JPG OK, there's the details - now what to do about it? From suggestion of helle, should I replace 4-pack 221 resistors with shorts? What about the radically dif...

Unique features, non-working programmer batch1: ATmega8-16AU micro R8=221 4-pack resistor R4=R5=[EDIT]911 R6=113 DSCN2541_1.JPG DSCN2545_1.JPG Unique features, non-working programmer, right, batch2: ATmega8L-8AU micro R8=221 4-pack resistor R4=R5=222 R6=912 DSCN2546_1.JPG DSCN2542_1.JPG To be contin...

Hi friends, I've really been struggling with these USBASP programmers. The beginning of the story is documented here . Now I've moved onto the betemcu.cn programmer. At first I ordered 2, 1 of the 2 worked and I attributed the non-working one to the modification I had made to remove USB type A and r...

the continuing saga of programmers. Turns out the broken dongle was not broken afterall. I have 4 of these betemcu parts now and all 4 are different! There are variations in resistor values and micro type. In particular interest is the series resistor 4-pack between the micro and MOSI, MISO, RST, SC...

I asked about recent / current schematics, but had the terminology wrong. http://openrcforums.com/forum/viewtopic.php?f=44&t=2055 My idea was to find a collection of posts from sections of the 9x that people had reverse engineered, then compile them together into a SCH that reflected the most cu...

@MikeB - I noticed that shortly after submitting my question - hence the retraction. The good stuff, pins 42, 43, 44 do not have thruholes. So much for easier haptic and telemetry mods!

re: job, haha, I hear ya! This forum is so distracting! Yes, Vbat is dependent on many factors (battery state of charge, current draw, battery temperature, battery chemistry/config, etc). I guess it depends on what type of IR LEDs. I'm sure 3.3V, 5V or even higher could be made to work, but regardle...

Well isn't that interesting. All the unused pins have a thru-hole to the backside of the board. I wonder are they plated thru-hole? If so, it's sure a lot easier to push a wire into the thru-hole and solder than trying to attach hair-thin wires to the micro legs. @jhsa, would you mind doing continui...

Cool, thanks for update. For IR module, if I understand correctly you plan to repurpose a USBASP programmer, reflash/change the firmware, add a transistor to drive the LED, connect transistor base to one of the ATmega8 outputs and connect a micro input to the PPM signal from the 9X or 9XR? The USBAS...

yes, increase the soldering iron temp a bit. Chip Quick is Tin-Bismuth solder with liquidus temp about 140degC. SAC Pb-free solder has liquidus temp ~270degC. You need the iron hot enough to melt the SAC, then the Sn-Bi solder will readily fuse with SAC and reduce the solidus temp to between 100degC...

Interesting, so you used a 3.3V buck converter from HK to power the RF module? I see you have a torodial inductor on the (battery?) +/- wires and added a capacitor (on the regulator output?). Were these your own additions or did the inductor and capacitor come from the HK regulator? I was always afe...

@Flaps30, I have the exact same programmer as you, but could not get it working with AVRDUDE in C9X. The thread Helle attached describes my odyssey with it. I've since purchased some other ones and am now functional, but would be nice to recover operation of these USBISP devices if only to have back...

FYI - Quick Chip is nothing more than Tin-Bismuth solder. This solder when has a very low melting point and a large heat capacity. It readily blends with commonly used SAC (Sn-Ag-Cu) and Pb-Sn solders for electronics. Bismuth based solder was popular in Japan at the beginning of the Pb-free evolutio...

Thanks kaos, that discussion is exactly what prompted me to start this thread about getting encoder capability in Open9x! Also, I saw your links to encoder from Digikey in that other thread, I'm going to order mine from Mouser - same part number...

good comments kaos. Is there some thread which has discussed how the encoder should best be implemented in software? Feedback from existing users of encoder really useful to help make a nice intuitive and smooth HMI. I like the SD card idea and could imagine sound files, data logging capability from...

Ok, But in my case, sometimes I also use the keys for some things, and the encoder wheel for others.. yes, exactly. So although a simpler encoder could work and may work "better" the 7-fxn encoder that most here are using sure provides a ton of flexibility. I'd say install the 7-fxn encod...

@hpihl, I suppose it is true that 3 way encoder + menu + exit are plenty enough and perhaps better for ergonomics. I suppose it is also true that if deeper modifications were made to the software, it could be made to work fine with a HMI like that. looking at 9x schematic, I can't see how left butto...

If you get the recommended encoder from Mouser, then yes. It has up/down/left/right buttons which will function in place of existing OEM buttons, but also has a center button and the rotary encoder function too. The PCB that hippo/iksbob made allow that encoder to drop-in replace the 4 buttons today...

@jhsa - are you going to run wires from the encoder PCB to the main PCB instead of direct soldering the encoder with standoff pins? just curious your thoughts...

Thanks kaos, I thought the HXT900 on the tail would be no better and maybe even worse than SG90 on the tail so today I ordered the G401B + S9257 ebay combo based on RCgroups reviews. When it arrives, the SG90 from RUD will replace the HXT900 AIL, so will have 3 equally junky cyclic servos. I might r...