openrcforums

Ok, I'm game. I'll start with my circuit and KCflyer's circuit. If there are alternate circuits lurking out there, please send me the links to the thread or post so I can extract the schematics and make a nice KiCAD .PNG for eventual uploading to wiki. Also, I think some verbiage about motor power s...

+1, can't wait! Bertrand if you need any help please ask. I'm sure there are many, including myself, that are willing to lend a hand - albeit a feeble one in my case

Decisions, decisions... Amazing you can buy a whole HK450GT kit for $60 shipped to my door. No doubt this bird will fly well. Alternately I can put about the same amount of $$ into this existing EXI to make equivalent or perhaps a little more durable. Funny how wear on 2 itty bitty plastic parts can...

Excellent advice. I'm cheap and pretty handy too - hence here we are at the 9x forums! I'm seriously considering this G401B + S9257 combo for $25 to improve tail stability. It has very positive reviews on RCgroups forums, gyro has supposedly less drift, wags and blow outs than GY48V. But yes, the se...

Thanks kaos and kilrah for feedback. Today I setup bird as suggested and things went pretty well. I managed to get the servo position set such that little to no rudder correction was required even in rate mode. Adjusting the gyro limit pot worked champ and bird flew well. Found 30% expo was too much...

Got it, thanks for clarifying. Seems like a 3point curve can do exact same as weight + subtrim + limits all in one neat, easy to comprehend package.

hmm, you mean create a curve for P3 which adjusts range of gain adjustment and reference the curve in mix page vs. adjusting the gain range by changing weight and offset of P3 directly in mixes?

Interesting...will have to experiment with that later. If that's the case, then perhaps I should set a mix such that rudder output: -during !GEA (rate mode), rudder signal is adjusted by weight and gain signal to a fixed -33% -during GEA (HH mode), then weight is 100% and gain is TBD. Might need to ...

@KCflyer, yeah 18mA seemed plenty strong when I held the hexbug in my hand during proto testing, but when in the radio and having to move the whole radio mass around - 18mA just doesn't make enough vibe for my liking. Don't get me wrong, it's noticeable and clear when haptic is on, but I had to cran...

Cool! I only have 1 hippo board, and zero encoders. But I'm going to place a Mouser order for encoder(s) soon...

@Bertrand, I could send an encoder too - will you need more than the one from jbbak?

Thank kaos for the advice, it is much appreciated. I slept on it last night and came to same basic conclusion so was glad I wasn't thinking crazy. to reiterate seems I take the following steps. -right now the tail servo arm is centered and the tail slider is also centered in travel. But when I did t...

just a quick update and thanks to the team here. I purchased 2 of the www.betemcu.cn USBASP dongles as suggested by mbanzi, did the solder work and boom up and running. While modifying one of the dongles for a remote USB-mini port, I somehow managed to fry a part of it (ESD maybe?) and could not get...

MikeB, Iksbob, Hippo and the gang have been developing a rotary encoder option in ER9X firmware for both the stock board and the Sky9X board. It is still a work in progress. For the stock board it uses a few of the LCD lines as input with a 3k9 pullup to the encoder switches to 5V source. Please see...

I searched the forum but couldn't find this specific topic. I did find all kinds of useful other stuff though :) Sorry for long post I'm trying to be clear and detailed. When setting up the rudder servo and gyro limits on a heli, it seems there are multiple means to the same end. I'm new to helis so...

Please check this thread . Although it started life as a speaker mod discussion it quickly evolved into a discussion about how to implement haptic without doing a speaker mod. A hexbug nano motor seems to do the trick and there are multiply equally valid ways to implement the drive circuit. Indeed y...

I just recently completed the haptic mod myself. Here's my implementation. First, I desoldered the 78L05 on the main switch PCB and replaced it with a 7805. I installed the 7805 on the "bottom" of the PCB, so it stands up when looking inside the radio. I added a 1uF cap on the output to st...

@Helle,
Thanks the exact one I have, the pictures I attached show it without the aluminum sleeve. Have you figured out how to use ProgISP1.72 with Companion9X?

@ Dan (Hippo),
I just put my order in too. Thanks for taking time to fab and mail out these PCBs for a crazy low price. Merry Christmas!

Does anyone know of a free hanging type plug and receptacle that would work well with Kynar wire, accommodate the required number of conductors, fit in the space available (even if I need to leave the wires extra long so the connector could be set somewhere that there is plenty of space), and not b...

agreed Showmaster. As discussed in this now lengthy thread is a bunch of different ways we could accomplish a haptic circuit. FET, BJT - pick your poison, almost any will work fine with the right surrounding circuit. 78L05, 7805, 7803, LM317 or DC/DC buck converter, all those power sources could or ...

@ mbanzi, thanks for recommendation and links; can't beat $3.42 to get me out of this pickle. It's curious the listing says supports AVRDUDE 5.2 onwards. My C9X is rev1.07 ver1532 and it's using avrdude ver5.1. [tab=20]Will it work OK? Should I download latest avrdude ver5.11 and place it in the C9X...

Tried stk500v2 / avrdoper - no good: ================================================================================= Started AVRDUDE C:/Program Files (x86)/companion9x/avrdude.exe -c stk500v2 -p m64 -P avrdoper -U eeprom:r:C:/Users/CAJTAR/AppData/Local/Temp/temp.hex:i =============================...

@ MikeB, definitely! As soon as I get home I'll provide an update on the results.

As I suspected, thanks for confirming. I think I will proceed w/ #3 - a recommendation from ebay would be highly appreciated. One last option/thought: I understand the programmer's onboard Atmel micro could be reprogrammed with another USBASP device (if fuses aren't locked etc). So if I get another ...

Thanks Kilrah/Mike, clearly I'm in over my head here. Allow me to confirm/rephrase; this device has the correct physical, network and application layers on the output (side connected to ATmega64), but on the input (side connected to PC thru USB) the physical and network layers are right (because it ...

Thx Mike, I'll try that when I return home. I looked into the avrdude.conf file and could not find references to the port hardware ID's that AVRDUDE is searching for. I assume then the interface criteria for each different programmer must be embedded in the avrdude.exe file, or in one of the associa...

Negative. Does not show up in "Ports" category or anywhere else I can find.
Is there a way to change the vid/pid that AVRDUDE is searching for? If I can get AVRDUDE to find it, maybe it will work...

on a gamble (albeit a low cost/risk one), I purchased said device and now have it in hand. It does not work with AVRDUDE, but I think I know why. Problem is I don't know how to fix it, maybe someone has a suggestion? Here's my analysis... 1/ AVRDUDE is looking for an USBASP with a specific hardware ...

KCFlyer - nice!
Do you have some pics of how you installed it in the radio? We love guts!

@ all of us - I love the discussions! Open source - good stuff! :D @ Flaps30 - yes, all will be well if we skip the "braking" resistor. As evidenced by the many people here w/ haptic and no braking resistor. @ Kilray - you explained it better than I could! Braking resistors can be quite ef...