Chirag Patel
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  • San Diego, CA
  • United States
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APM2.5 Input/Output Pin Mapping

Started this discussion. Last reply by Bill Bonney Jan 19. 2 Replies

All,  I am writing some custom code for my APM2.5 and am having trouble mapping the I/O pins that are brought out on the enclosure against the Mega 2560 pin outs. I have the APM2.5 schematic and have…Continue

APM2 I/O Pin Mapping Schematic Question

Started this discussion. Last reply by Søren Kuula Jan 23. 1 Reply

All,  I am writing some custom code for my APM2.5 and am having trouble mapping the I/O pins that are brought out on the enclosure against the Mega 2560 pin outs. I have the APM2.5 schematic and have…Continue

Noob Question on How to Load Software on APM2.5 (via Arduino app)

Started this discussion. Last reply by Chirag Patel Jan 16. 2 Replies

I am new to Arduino programming and am learning the language from the basics.  I downloaded Arduino w/Autopilot application for my PC and have the APM2.5.  I have a short program that I wrote that I…Continue

Compiling ArduCopter 2.2b4 issue (cannot find headers)

Started this discussion. Last reply by emile Jan 29, 2012. 1 Reply

I am attempting to get all my ArduCopter development environments setup on my MacBook Pro w/ OSX but keep getting errors when I try to "Verify" the sketch in the Arduino IDE (patch version from…Continue

 

Chirag Patel's Page

Latest Activity


3D RoboticsJoshua Ott replied to Chirag Patel's discussion Help Getting Steering Servo Output in the group ArduRover User Group
"Yeah, I see it now also. That's cool, it's better if everything stays accessible until it's all sorted out. :-)"
Mar 2

AdminThomas J Coyle III replied to Chirag Patel's discussion Help Getting Steering Servo Output in the group ArduRover User Group
"@Joshua, I clicked on the link I provided for Chriag and it connected for me. Strange! Regards, TCIII"
Mar 2

3D RoboticsJoshua Ott replied to Chirag Patel's discussion Help Getting Steering Servo Output in the group ArduRover User Group
"TCIII, I just checked and that link is dead, victim of the shake up. Chirag, Sorry Mate, everything is getting moved around right now. Please try these…"
Mar 2

AdminThomas J Coyle III replied to Chirag Patel's discussion Help Getting Steering Servo Output in the group ArduRover User Group
"@Chriag, Here is an explanation from the Wiki on the function of J1 on the APM2.5: http://code.google.com/p/ardupilot-mega/wiki/APM25Power Hope this helps. Regards, TCIII"
Mar 2
Chirag Patel replied to Chirag Patel's discussion Help Getting Steering Servo Output in the group ArduRover User Group
"I am using either my 2s lipo or my USB connection. Where do I attach the J1 jumper. I have never heard of this."
Mar 2

AdminThomas J Coyle III replied to Chirag Patel's discussion Help Getting Steering Servo Output in the group ArduRover User Group
"@Chriag, How are you powering your APM2.5 and do you have jumper J1 in place? How are you powering your APM2.5? Are you trying to move the servo using just the USB connection to power the APM? If you are, then the servo should move if you move the…"
Mar 2
KM6VV replied to Chirag Patel's discussion Help Getting Steering Servo Output in the group ArduRover User Group
"Do you have power supplied to the servo side of the APM?  Alan KM6VV "
Mar 2
Chirag Patel added a discussion to the group ArduRover User Group
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Help Getting Steering Servo Output

I am starting to get my ArduRover configured and am having some trouble with getting basic functionality from my radio to my steering servo.  I have APM2.5+ and have loaded ArduRover2.20B via Mission Planner (version 1.2.35 mav 1.0).  I am trying out to see if I can get my steering input from transmitter to go through the APM2.5+ and get to the steering servo.  However, I am not seeing the steering servo move.  I am currently only using this channel (channel 1) for communication (no ESC…See More
Mar 2
7 Comments
Søren Kuula replied to Chirag Patel's discussion APM2 I/O Pin Mapping Schematic Question
"Hi, The ATMega32U2 takes eight PWM signals and assemble a single PPM signal out of them; it comes out on Pin23. If goes on via SJ2 to PPM_IN and then via SJ104 to either  PL0 or PL1 on the Mega2560 (nobody ever changes SJ104, you can assume…"
Jan 23
Goh DongLiang left a comment for Chirag Patel
"I haven't found any yet. Do you know anyone who knows how it works?"
Jan 22
Bill Bonney replied to Chirag Patel's discussion APM2.5 Input/Output Pin Mapping
"Yes those are the correct outputs when I look at the eagle files. PPM comes out of the ATMEGA pin 23 and goes to pin 36 on the ATMEGA2560"
Jan 19
Chirag Patel replied to Chirag Patel's discussion APM2.5 Input/Output Pin Mapping
"Update: Learned that the ATMEGA32U2 may be a special PPM encoder Chip.  I will use A0 to A3 (pin 97 to94) as my inputs from my Radio RX outputs instead.  Still not seeing what I would expect for PulseIn command.  All power is…"
Jan 19
Chirag Patel posted discussions
Jan 19
Chirag Patel replied to Chirag Patel's discussion Noob Question on How to Load Software on APM2.5 (via Arduino app)
"Got it to work!  My issue was that the driver that was loaded automatically by Windows XP wasnt correct.  I had to go in and manually set the driver to the .inf file for the Arduino 2560 Rev3 board.  Now the correct Comm port is shown…"
Jan 16

3D RoboticsChris Anderson replied to Chirag Patel's discussion Noob Question on How to Load Software on APM2.5 (via Arduino app)
"You don't need an AVR programmer to use Arduino. Please got to Arduino.cc for programming instructions. "
Jan 15
Chirag Patel posted a discussion

Noob Question on How to Load Software on APM2.5 (via Arduino app)

I am new to Arduino programming and am learning the language from the basics.  I downloaded Arduino w/Autopilot application for my PC and have the APM2.5.  I have a short program that I wrote that I want to upload to the APM.I have gone through and compiled the program for Arduino Mega 2560.  Also, I have my HAL Board settings to none.  The programmer is set to AVRISPmkII.  I noticed from device manager that the Mega 2560 is setup on Comm 8.  However, I do not see that Comm option in Arduino…See More
Jan 15
2 Comments

Profile Information

About Me:
Engineer at Defense Contractor
Tell us a bit about your UAV interest
Design/build UAVs at home.
Hometown:
San Diego

Comment Wall (1 comment)

At 5:30pm on January 22, 2013, Goh DongLiang said…

I haven't found any yet. Do you know anyone who knows how it works?

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