uncleflo
Registered since September 28th, 2017
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RP2040 Launches Rocket Flight Computer | Tom's Hardware
Saved by uncleflo on January 27th, 2022.
Putting Raspberry Pi boards into space is nothing new, but the method of achieving orbit often differs. While the Astro Pi computers headed for the final frontier onboard a SpaceX Falcon 9 rocket, there are some decidedly lower-tech approaches including, as detailed on the Tindie blog, this $45 RP2040 flight computer from Finnish designer Dan Invents. Combining the RP2040 controller with an altimeter, accelerometer, temperature sensor, and enough juice to power two servo motors (for parachute deployment on the way down), the Rockit (rocket operation computing kit) weighs just 0.18oz (5g) and measures 1.73 x 0.9 x 0.35 inches (44 x 22 x 9 mm). It comes with an open-source firmware pre-installed, and can be tinkered with and updated over micro USB. There's a 16-position rotary switch for adjusting parameters such as start and end positions for the servos, and also a buzzer, so you can more easily find your rocket after a successful landing. Compared to the 2MHz Apollo guidance computer that deposited Neil Armstrong on the Moon, the RP2040 is a powerhouse, and should be more than capable of altitude-based parachute opening and logging flight data from the sensors to a micro SD card. The kit, which costs $44.99, comes with just the board and its pin headers - you need to supply your own battery, servos, cabling, micro SD card and space suit.
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Cross compile Qt (Windows) to Raspberry 3 | Qt Forum
Saved by uncleflo on August 26th, 2019.
I've been looking for informations on how to configure the cross compilation on qt (windows) for the raspberry 3. I don't know if it's the place to write it, but for people who are interested in, here is how I did the cross compilation beetwee windows 8 and raspberry pi 3 (debian jessie). Most of steps come from the tuto here : http://visualgdb.com/tutorials/raspberry/qt/embedded/ There should be different ways to make it work, maybe this is not the best one, but it works for me. Hope it's helpful, sorry if i'ts not the place.
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Headless Raspberry Pi setup with wifi :: Styxit blog
Saved by uncleflo on August 1st, 2019.
This article will get you up and running with a Raspberry Pi, connected to your wifi network and accessible over ssh, without ever needing to connect anything to it, besides power. After flashing the image to the SD card, the drive has been ejected. Disconnect and connect the SD card so it gets detected by macOS again. A boot drive should appear. Open a terminal window and cd to the boot drive using the following command:
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