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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PRG-240T-7ER | PRO TREK | Watches | Products | CASIO
Saved by uncleflo on December 17th, 2019.
Full-Auto Illuminator: Automatically deactivates the Auto EL backlight function when surrounding light is sufficient, and activates it under dim light or dark conditions. Low-temperature resistant (-10 °C): Even temperatures as low as -10 °C have no effect on this watch. Solar Power: A solar cell provides power for operation. Duplex LCD: Giving you a constant overview: Elements on the display are distinguished from one another using colour. This is achieved using different coloured layers placed on top of one another, allowing information to be displayed more clearly. Digital-compass: A built-in direction sensor detecs the magnetic north. 10,000 m Altimeter: A pressure sensor detects changes in the air pressure and converts the result into an altitude up to 10,000 m. Height Gain: The height gain sums all the meters you have climbed in a session, so that you can see at a glance the total ascent on a tour. Sunrise/sunset display: After entering the geographical location, sunrise and sunset times can be displayed for any given date. Barometer (260 / 1.100 hPa): A special sensor measures the air pressure (measuring range: 260 / 1100 hPa) and presents this on the display in the form of a symbol. This enables early detection of weather trends.
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