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« on: May 19, 2015, 08:55:42 AM »
SK1701
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The rains are here in Bangalore and often play spoilsport when I want to fly my Reptile 500. So I thought of building an indoor flyer. Inspired by Oscar Liang's blog post here, I decided to build myself a micro quad I could fly with my current radio setup. This quadcopter comes with a 32 bit processor that can run CleanFlight. Hopefully, this project will give me some experience with the CleanFlight software.

Parts list:
Integrated frame/flight controller
USB to Serial adapter
Hubsan 7mm brushed motors
Hubsan spare props
FrSky VD5M Receiver
Turnigy nano-tech 350mah 1S 65~130C Lipo Pack

The frame/flight controller came in today and it is smaller than I ever expected. Photos coming up!
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« Reply #1 on: May 19, 2015, 10:36:12 AM »
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Waiting for the pics. Also please mention from where u got the parts.
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« Reply #2 on: May 19, 2015, 10:41:42 AM »
Darshan for multirotors
Well now it flies!!
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Quote from: miginstruments on May 19, 2015, 10:36:12 AM
Waiting for the pics. Also please mention from where u got the parts.
Just click on the.links that he has put up..
Nice choice ..go for it
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« Reply #3 on: May 19, 2015, 11:08:37 PM »
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« Reply #4 on: May 20, 2015, 08:26:41 AM »
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Thank you Darshan and Sundaram Sir. Miginstruments, I got the parts mostly from BangGood and the frame from GLB. Parichya will be providing the Rx and LiPo.
Here are the pics of the frame. I am still waiting for the rest of the parts. This seems small but is actually much bigger than the likes of the CX-10 and Eachine H7.
http://i284.photobucket.com/albums/ll36/siddharth_kumanduri1/IMG_1408_zpsdepmda7r.jpg
My micro quadcopter build

http://i284.photobucket.com/albums/ll36/siddharth_kumanduri1/IMG_1406_zpstipfen0n.jpg
My micro quadcopter build
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« Reply #5 on: May 20, 2015, 08:35:52 AM »
Darshan for multirotors
Well now it flies!!
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That is literally MICRO.. keep.us updated as you receive the parts.. Hats Off Salute
A question. . Are you using gears on the motors as.in syma and other quad!
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« Reply #6 on: May 20, 2015, 08:55:06 AM »
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The good thing about this quad being so small is that I can can practise flying in different orientations as well as flying acro. I do not think gears are necessary for these motors.
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« Reply #7 on: May 30, 2015, 12:51:05 PM »
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set acc_hardware = 1
I have received the USB to Serial adapter as well as the motor and props. So I got around to the software setup.
The first thing I needed to do was install the drivers for my CP2102 USB to Serial adapter. I got the drivers here and they worked flawlessly.

I then flashed CleanFlight after disconnecting the bootloader jumper on my board. the connections are Tx-Rx, Rx-Tx, Gnd-Gnd and 5V-5V. I got around to the software setup as well. I copied the PID values from the original blog post. I will tune them once I fly (still need an Rx and LiPo). I also set up the profiles 1,2 and 3 in CleanFlight such that I can get Acro Mode, Horizon Mode and Headfree mode respectively. This is with only 4 channel input! I can post my CLI dump if anyone is interested. Here are some pictures.

The flashing screen:
http://i284.photobucket.com/albums/ll36/siddharth_kumanduri1/Screen%20Shot%202015-05-30%20at%2012.35.12%20pm_zpsehebqidm.png
My micro quadcopter build


The screen once connected:
http://i284.photobucket.com/albums/ll36/siddharth_kumanduri1/Screen%20Shot%202015-05-30%20at%2012.35.33%20pm_zps6kmyntny.png
My micro quadcopter build


The connections to flash:
http://i284.photobucket.com/albums/ll36/siddharth_kumanduri1/IMG_1447_zps8umfa9gi.jpg
My micro quadcopter build
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« Reply #8 on: May 30, 2015, 08:49:53 PM »
ved
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Wow. That's really a micro quad. Awesome Build.
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« Reply #9 on: August 05, 2015, 07:06:40 PM »
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Sorry I haven't updated this thread in ages. Thanks to a production error in one batch of boards, my board came with the wrong motor driver transistors. i have ordered some IRLML2502 FETs to replace them with, but I've been waiting for them for almost one and a half months. Sad
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« Reply #10 on: September 12, 2015, 11:53:07 AM »
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After I got the FETs, I tried repairing the board. However, I appear to have damaged the board while desoldering the old transistors. I got a replacement board from GLB with a record shipping time of one week by Hong Kong post! The build was quick and easy and this quad is a little rocket! A great acro trainer though the flight time leaves a lot to be desired (2.5 min). Pics and video coming up!
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« Reply #11 on: September 12, 2015, 03:13:30 PM »
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very exciting to know  Drool  Clap   please upload some MAST TYPE videos  Thumbs Up
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« Reply #12 on: December 10, 2015, 11:51:15 AM »
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Is the FrSky receiver compatible with HobbyKing 6CH Transmitter?
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« Reply #13 on: December 10, 2015, 12:01:35 PM »
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No. Receivers are usually only compatible with their own brand/ protocol of transmitter. FrSky receivers will only work with FrSky transmitters or modules.
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« Reply #14 on: December 10, 2015, 12:07:21 PM »
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I have a HobbyKing 6ch transmitter. I don't think HK makes any micro receivers like the one mention by Oscar Liang (FrSky VD5M). Kindly help with the same.
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« Reply #15 on: January 05, 2016, 09:25:51 AM »
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I have few of these lying in warehouse. Its very very old, like 2 yrs back i bought it. But never found a mini receiver to try my hands on it.

Anyhow its a good build  Thumbs Up Thumbs Up
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« Reply #16 on: January 05, 2016, 10:12:12 AM »
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Thank you sir. I never got around to posting flying videos and completed pictures and now I've dismantled it completely. I will do a rebuild and post some videos.

Also, are the boards you have the STM32 version that support cleanflight or the ATMega version that run MultiWii? I have seen both of them available.
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« Reply #17 on: January 05, 2016, 10:17:42 AM »
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I think they are ATMega version cos 2 years back ATmega was common, now STM is common.
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« Reply #18 on: January 05, 2016, 10:28:33 AM »
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Woow  Clap

Thank you for sharing such an awesome thing Cheesy
keep updating this thread with the knowledge you get or the additions you make to it. Bow
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« Reply #19 on: January 05, 2016, 10:31:15 AM »
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BY the way how much did it cost you Cheesy
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« Reply #20 on: January 13, 2016, 02:50:05 AM »
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Hello SK1701,

I already have all the parts to build this mini quad, including the usb adapter (same as you).
My problem is that I have an error connection when I try to flash it with cleanflight. I tryed with baseflight and the messagge is equal: "No configuration received within 10 seconds, communication failed"

I have the drivers from silabs, my pc detects the usb and says that is installed well.

Until I read your post I had wired it wrong, tx-tx rx-rx. So I supposed that it was the problem  Clap, but it wasn't.  Bang Head
Boot0 is disconnected and the other connector is in "pow" position.

I will apreciate any idea or advice.

Thanks
Carlos
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« Reply #21 on: January 13, 2016, 10:15:02 PM »
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Hello Carlos.

Have you selected "Full Chip Erase" and "No reboot sequence" in the firmware flasher screen? Also, have you made sure that the CP2102 adapter and the CJMCU have a common ground connection. When you connect the adapter to your computer do the LEDs on the CJMCU board turn on?
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« Reply #22 on: January 13, 2016, 11:26:39 PM »
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Yes, I did everything you describe. I will send a picture when I arrive at home, maybe you see something wrong... Thanks!
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« Reply #23 on: January 14, 2016, 01:05:17 AM »
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Sorry...but...how do you upload photos??! it says maximum attachment size allowed 200 kb!
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« Reply #24 on: January 14, 2016, 06:10:47 AM »
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You either need to reduce the image size a lot or upload them to an external hosting site like Photobucket and embed the link here.
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« Reply #25 on: January 14, 2016, 01:16:55 PM »
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Thanks, so I will try with photobucket. I uploaded 5 photos, in one of them I show with an specific program that my pc recognize the cp2102. I tryed many many times to connect it, I order another usb adapter, the same as Oscar Liang, and another micro quadcopter...Do you see something wrong?

kind regards from Spain

http://s1074.photobucket.com/user/carpalen29/media/device%20connected%201_zps3ajpd0nk.png.html
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« Reply #26 on: January 14, 2016, 01:46:46 PM »
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Your connections look fine and the board is powered on. So this is a very strange problem. Maybe you could try it from a different PC? Which version of Windows are you on now?
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« Reply #27 on: January 14, 2016, 03:03:25 PM »
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I've tryied it with windows xp. I run windows 7 with my job laptop but I can't use it because of I don't have administration permisions to install the drivers.
I will try with another laptop which runs windows 10 or 8 I don't remember. But the drivers are the same, right?

It's very frustrating to be stuck at this point...
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« Reply #28 on: January 15, 2016, 02:01:30 AM »
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I've tryied with my mother's laptop, which runs windows 10. After a while searching on the internet for the cp2102 drivers, I discover that there are no drivers available yet for windows 10...amazing  Clap

I will try tomorrow with my girlfriend's laptop, it has windows 7!!
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« Reply #29 on: January 15, 2016, 09:22:02 AM »
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Just a tip/trick, whenever you capture a pic from phone, just take its screen shoot Smiley and you'll be good to go Cheesy. It will be under 150 kb and easily uploadable.
(Self implemented) I do it every time, it works for me Smiley. I hope it does for you as well.
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« Reply #30 on: January 15, 2016, 01:48:42 PM »
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Quote from: Sukhpreet on January 15, 2016, 09:22:02 AM
Just a tip/trick, whenever you capture a pic from phone, just take its screen shoot Smiley and you'll be good to go Cheesy. It will be under 150 kb and easily uploadable.
(Self implemented) I do it every time, it works for me Smiley. I hope it does for you as well.

Thank you Sukhpreet! easy and fast... Smiley
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« Reply #31 on: January 15, 2016, 10:39:55 PM »
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Happy to help broda....don't forget to +1  Tongue  Giggle
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