Hey guys I've fried 2 boards already, first one dunno why. The second time was a stupid impatient error of judgment. Anyways, unlike most of you I have a Nitro engine so no ESC. I'm tired of shorting my board so I want to make sure I understand 100% where my power can come from. I got my board in the mail yesterday, but the back is stamped 1-12-09. It looks like the new ones. I'm not a newbie to electronics, I'm just paranoid now. Thanks
FedEx founder Fred Smith came by the Wired offices yesterday for a chat on a range of things, but I'll focus here on the bit relevant to this site. He says that they'd like to switch their fleet to UAVs as soon as possible but that this will have to wait for the FAA, which… Continue
Autofocus, image stabalization, etc. Seems perfect for UAV use. From robots.net
"Advasense has announced what they claim is the world's smallest 5MP autofocus camera module. The module, which was developed with the help… Continue
I have just recently gotten one of these from http://thesiliconhorizon.com/
And I was basically planning on using it as the hardware platform for my own integrated UAV controller.
The specs TechFX Motion OSD IMU:
* small 2"x2.5" size
* fast dsPIC 40 MIPS 80 Mhz MCU
* 3 axis accelerometer MMA7260Q with G selectable
* 3 axis Gyroscope of IDG300's
* MAX 7456 On screen display video overlay NTSC and PAL… Continue
Some people have had questions about ArduPilot's FTDI port. Basically, it's a standard FTDI port but we don't use the power pin. That means that you can't power the board from the FTDI cable, and every time you're using the FTDI cable it must be powered by another source, such as your ESC, battery or whatever else you'd normally use. The reason we don't use the FTDI's power is to avoid power conflict with the board when you're using the FTDI cable as a serial monitor during regular ArduPilot… Continue
Hello everyone, I've been visiting the website for a while and have enjoyed reading the discussions here, but this is my first official post. I am working on hovering my co-axial helicopter and decided to do this using the Propeller chip, and specifically using the Sparkfun 5 DOF IMU and Jason Wood's code which we all appreciate. To make a long story short, I downloaded the code successfully to the development board with the IMU and ADC soldered according to the circuit in the code, but I am… Continue
The new version of Arduino is now out. Improvements included fixing PulseIn() to wait for a transition to start timing (i.e. ignoring any pulse that had already started when the function was called) and, importantly, supporting the ATMega328 natively!
That last one is a biggie, since the 328 has twice as much memory as the 168 we're currently using (32KB of flash, 2KB of RAM, and 1KB of EEPROM). Eventually, we'll migrate ArduPilot… Continue
We have now fully diagnosed the ArduPilot MUX firmware problem, and it turns out there were two problems, not one. The early boards were flashed with the wrong firmware, which was fixed on 1/26, but the boards after that until 2/5 continued to have a second problem, which is that the CKDIV8 fuse in the Attiny45 chip wasn't cleared at the factory, as it was supposed to be. What does the CKDIV8 fuse do? It divides the internal 8Mhz clock speed by 8, so the Attinys ship from the manufacturer with… Continue
Hey guys, I was setting up my autopilot system for my senior thesis "Building a UAV for Remote Sensing and Cartographic Applications" when I guess I burnt it out. No power to the board, including direct power, and yes i switched the jumper. :-(.... The whole board seems toast. I ordered two new boards today. I followed the wiring diagram and all. I'm thinking there was a surge somehow. If you guys have any ideas let me know....
P.S. The programers won't even read the board :'-( Take… Continue
I'm an amateur radio operator (K7AAY) specializing in emergency services work, seeking a way to loft a repeater for fire fighting support and other emergency services work. We get wildfires and the state rado net has big gaps in canyons and the boonies.
Any design would compete with current state of the art, i.e., a weather balloon, a tank of helium and the tether with a wire carrying 500ma at DC voltage adequate to deliver 8.4VDC to the transceiver (an HT or Handheld Transceiver and… Continue