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MediaTek GPS or OilPan Problem

Started this discussion. Last reply by John_NY Nov 30, 2012. 5 Replies

 

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John_NY replied to John_NY's discussion MediaTek GPS or OilPan Problem
"At first I thought the OilPan IMU was the problem, but even on its own the Ardupilot Mega is weird. Since the APM has not had any use as an autopilot, due to all the GPS errors, I went to repurpose just the APM (no OilPan) as a GPS device.  The…"
Nov 30, 2012
John_NY replied to Mike R.'s discussion Oilpan died after a dozen flights, while getting ready to fly again..
"Don't think I'll be any help, but I've been doing some debugging of my own APM/IMU, and ended up breaking the problem down by separating the two boards.   If you have a USB FTDI cable you might try separating the two boards…"
Jul 16, 2012
John_NY replied to John_NY's discussion MediaTek GPS or OilPan Problem
"One test I just ran was to unplug the IMU and try to use it like an FTDI cable. I don't know whether this is a valid use of the IMU -- The label on some of the pins seems to match what a FTDI cable would say (see attached). When I connected the…"
Jul 14, 2012
david.collett replied to John_NY's discussion MediaTek GPS or OilPan Problem
"If the behaviour changes with the oilpan connected, then I guess you may have some sort of power or hardware issue :( I think I was a bit confused and thought you were running your sketch on an additional arduino *between* the GPS and APM, but I see…"
Jul 14, 2012
John_NY replied to John_NY's discussion MediaTek GPS or OilPan Problem
"Dave, In my simple pass-through sketch, I never call any of the GPS libraries, so the Mega doesn't know it's talking to anything but some serial device at 38400 bps. When the Sparkfun APM is connected to the GPS with no IMU, the GPS gets a…"
Jul 14, 2012
david.collett replied to John_NY's discussion MediaTek GPS or OilPan Problem
"Hi, Note that when you connect an MTK GPS (with DIYDrones firmware) to an APM, the APM instructs it to switch to a more compact binary protocol rather than NMEA and the output stream will no longer be legible in a serial console. It's possible…"
Jul 14, 2012
John_NY posted a discussion

MediaTek GPS Problem SOLVED

I have a MediaTek GPS, attached to Ardupilot Mega + Oilpan, which I bought around Spring 2011, and last used around that time.  The MediaTek GPS does not work when the Oilpan  (FoxTrap 2.2, 5/24/2010)  is plugged in.I followed the instructions on the wiki to update the to 1.6 (Firmware AXN1.30_2389_3329_384.1151100.1_v16.bin).When I attach the GPS to the computer with a FTDI cable, and I can…See More
Jul 14, 2012
John_NY commented on Chris Anderson's blog post DARPA creating its own DIY Drones--"UAVForge"!!!
"This is weird -- I'd imagine DARPA and "Crowd Source" would be mutually exclusive due to ITAR.  In fact the "Terms of Use" (Section 14) says that participants must adhere to ITAR and whatever the "Export…"
Jun 1, 2011
John_NY commented on Chris Anderson's blog post How to mod a Multiplex EasyStar
"I extended my ESC-to-Motor wires to make a cable extension for each of the 3 wires.  To make each of these 3 extensions, I twisted together 2 pair of 18 AWG wire (harvested from a computer PSU during a conversion to a laboratory power supply)…"
Feb 10, 2011
John_NY commented on Chris Anderson's blog post How to mod a Multiplex EasyStar
"@AndreB -- I used a 3 blade prop on the advice of Jason Short, because of the sound ("bzzzzzzz" vs…"
Jan 11, 2011
John_NY commented on Chris Anderson's blog post How to mod a Multiplex EasyStar
"@AndreB - I'm also building an EasyStar drone.  According to some suggestions I used a 6x4 3-blade pusher prop (Tower) and a 2200kev motor (HK).  As a total newbie I did not know I needed something to mount the prop, but I eventually…"
Jan 11, 2011
John_NY left a comment for Kim Halavakoski
"Regarding EasyStar vs Twinstar -- do you want ailerons? I have no flight experience yet, but it seems that ailerons and straight wings are likely to give better waypoint navigation, but you will have to figure out how to hook up the twin motors (the…"
Nov 17, 2010

Profile Information

About Me:
I am a 30 year-old engineer from Long Island, New York. I am a full-time engineer and part-time Physics grad student in the Los Angeles area of California, where I plan to stay for the foreseeable future.
Please tell us a bit about your UAV interest
I'm looking to learn about flying and control systems.
My UAV plan is:
(1) Learn to fly (requires plane, radio, flight club, AMA membership)
(2) Build a sensor/camera payload with a commercial open-source IMU, a data logger, Airwave A/V TX/RX modules, and a NTSC camera. Maybe I'll throw an OSD in there between the camera and the Airwave TX module.
(3) Fly with the payload, and record sensor measurements.
(4) Use sensor measurements to set control algorithm, and try flying with autopilot.
(5) Repair plane and return to step 1.
Hometown:
SoCal, USA

John_NY's Blog

Multiplex Easy Star UAS Configuration

Posted on June 25, 2010 at 3:30pm 4 Comments

Introduction

I am acquiring a Multiplex Easy Star to learn to fly, and to work on a UAV build. This blog post highlights my proposed configuration, which is to be incrementally upgradeable



I plan to split up my project into five parts:

  1. Learn to fly,

  2. Fly with a camera payload (just for fun),
  3. Fly manually with sensors, a data logger, and maybe a camera,…
Continue

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