Fun, Learning, Friendship and Mutual Respect START  HERE


Unregistered
Go Back   HeliFreak > R/C Electronics Support > BeastX FBL System


BeastX FBL System BeastX FBL Flybarless System Software and Hardware Support


Reply
 
LinkBack Thread Tools Display Modes
Old 12-17-2010, 09:22 PM   #21 (permalink)
Registered Users
Thread Starter Thread Starter
 

Join Date: Aug 2010
Default

I don't think u need a pull-up resistor with TTL.
Gonna find if i have any Hex inverter (7404) chip at work next Monday to try it.
nizee is offline        Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 12-17-2010, 10:07 PM   #22 (permalink)
Registered Users
 

Join Date: Jul 2006
Default

I think they used Schottky barrier diode. There is 10K pull up to Vcc. 1Wire communication must pass through 100ohm resistor. Don't know if reversed biased on the diode. k towards TxD. Can't power MB through USB, I think as precaution. Our servoes too amp jungry. Might burn our PC USB bus.

Last edited by Blades_Cuts; 12-17-2010 at 10:12 PM.. Reason: Add
Blades_Cuts is offline        Reply With Quote Quick reply to this message
Old 12-18-2010, 07:00 PM   #23 (permalink)
Registered Users
 

Join Date: Jul 2006
Default

This is interesting.... Pull up is definitely required....


Click image for larger version

Name:	as-md1wd.gif
Views:	789
Size:	5.8 KB
ID:	195930
Blades_Cuts is offline        Reply With Quote Quick reply to this message
Old 12-21-2010, 05:44 AM   #24 (permalink)
Registered Users
 

Join Date: May 2006
Default

The "Hacker ESC" interface and the "Multiplex USB to RX" interface should be compatible with the microbeast.
!!! Attention !!!
You have to make sure then that the middle connector (power / red) is not connected (pull it out of the connector), otherwise you might burn down your PC's USB hub by powering the complete Heli electronics including servos from it.

regards,
Walter

BTW:
The circuit with the diode was wrong, as the diode was inserted in the wrong direction.You also missed the pull up on the single line and you have to use a schotky diode that has not more than 0.2v to 0.3v @ a couple of mA. (e.g. BAT64-02W...)
labmaster is offline        Reply With Quote Quick reply to this message
Old 12-21-2010, 01:51 PM   #25 (permalink)
Registered Users
 

Join Date: Jul 2006
Default

Good info here.
Blades_Cuts is offline        Reply With Quote Quick reply to this message
Old 12-21-2010, 02:54 PM   #26 (permalink)
Registered Users
Thread Starter Thread Starter
 

Join Date: Aug 2010
Default

Quote:
Originally Posted by labmaster View Post
The "Hacker ESC" interface and the "Multiplex USB to RX" interface should be compatible with the microbeast.
!!! Attention !!!
You have to make sure then that the middle connector (power / red) is not connected (pull it out of the connector), otherwise you might burn down your PC's USB hub by powering the complete Heli electronics including servos from it.

regards,
Walter

BTW:
The circuit with the diode was wrong, as the diode was inserted in the wrong direction.You also missed the pull up on the single line and you have to use a schotky diode that has not more than 0.2v to 0.3v @ a couple of mA. (e.g. BAT64-02W...)
Thanks for the advice Walter.
What's the value of the resistor should i use? Possible to draft/sketch the circuit for me?
That would save me a lot using my current USB to UART converter.
nizee is offline        Reply With Quote Quick reply to this message
Old 12-21-2010, 05:49 PM   #27 (permalink)
Registered Users
 

Join Date: Jul 2006
Default

Your almost there.... Shottky diode, cathode to the Tx side, for the open drain 1-Wire environment.... 10K pull up.... 100ohms passes data communication to MB, I think that's to couple the 5V USB side to 3V MB dataline.... The soup is complete....
Blades_Cuts is offline        Reply With Quote Quick reply to this message
Old 06-18-2011, 12:23 PM   #28 (permalink)
Registered Users
 
Posts: 33
 

Join Date: Jun 2010
Default

Here's how it worked for me. Standard 5V FTDI USB/RS232 (e.g. http://www.watterott.com/de/FTDI-Basic-Breakout-5V). Should work with all similar USB/UART-RS232 converters.

Please make sure to only connect the one wire data line and ground to the BeastX SYS Input. The Microbeast has to have it's own power supply like a backup battery or just the regular BEC switched on.
Attached Thumbnails
Click image for larger version

Name:	USB2SYS1.jpg
Views:	5943
Size:	134.0 KB
ID:	234916  

Last edited by mha1; 06-19-2011 at 05:36 AM..
mha1 is offline        Reply With Quote Quick reply to this message
Old 08-28-2011, 05:39 PM   #29 (permalink)
Registered Users
 

Join Date: Feb 2010
Thumbs up

Quote:
Originally Posted by mha1 View Post
Here's how it worked for me. Standard 5V FTDI USB/RS232 (e.g. http://www.watterott.com/de/FTDI-Basic-Breakout-5V). Should work with all similar USB/UART-RS232 converters.

Please make sure to only connect the one wire data line and ground to the BeastX SYS Input. The Microbeast has to have it's own power supply like a backup battery or just the regular BEC switched on.
...
Thank you very much, it really works!

Last edited by Monster1025; 08-29-2011 at 03:29 PM..
Monster1025 is offline        Reply With Quote Quick reply to this message
Old 01-25-2012, 09:11 AM   #30 (permalink)
Registered Users
 

Join Date: Nov 2008
Default

I can confirm that the Hacker USB interface works with the BeastX. Connect it with a female to female cable with the centre pin disconnected.



Quote:
Originally Posted by labmaster View Post
The "Hacker ESC" interface and the "Multiplex USB to RX" interface should be compatible with the microbeast.
!!! Attention !!!
You have to make sure then that the middle connector (power / red) is not connected (pull it out of the connector), otherwise you might burn down your PC's USB hub by powering the complete Heli electronics including servos from it.

regards,
Walter

BTW:
The circuit with the diode was wrong, as the diode was inserted in the wrong direction.You also missed the pull up on the single line and you have to use a schotky diode that has not more than 0.2v to 0.3v @ a couple of mA. (e.g. BAT64-02W...)
Roger_Salmon is offline        Reply With Quote Quick reply to this message
Old 01-15-2016, 09:45 PM   #31 (permalink)
Registered Users
 

Join Date: Jun 2015
Default

Old thread, I know, but I am about to get an AR7300 and was looking for the DIY usb adapter.

The schema above looks the same as a blheli 1 wire uart/usb adapter as well.

Just thought I would put it out there.
interestingfellow is offline        Reply With Quote Quick reply to this message
Old 03-16-2016, 02:18 AM   #32 (permalink)
Registered Users
 
Posts: 41
 

Join Date: Jan 2009
Default

Hi everyone.
I'm interested in flashing Futaba GY-750, but I have no CIU-2 adapter, and no wish to pay $50 for $2 USB->USART adapter either.

Is there a working solution to flash firmware without original CIU-2?
__________________
In a sky full of people, only some want to fly isn't that crazy?
Ai1dRo0kNotBot is offline        Reply With Quote Quick reply to this message
Reply




Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the HeliFreak forums, you must first register.
Please enter your desired user name, your REAL and WORKING email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself. Use a real email address or you will not be granted access to the site. Thank you.
Email Address:
Location
Where do you live? ie: Country, State, City or General Geographic Location please.
Name and Lastname
Enter name and last name here. (This information is not shown to the general public. Optional)
Helicopter #1
Enter Helicopter #1 type and equipment.
Helicopter #2
Enter Helicopter #2 type and equipment.
Helicopter #3
Enter Helicopter #3 type and equipment.
Helicopter #4
Enter Helicopter #4 type and equipment.

Log-in


Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On




Copyright © Website Acquisitions Inc. All rights reserved.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.

SEO by vBSEO 3.6.1