From: Keith Packard Date: Mon, 29 Oct 2012 08:32:56 +0000 (-0700) Subject: Add initial MicroPeak page (not linked yet) X-Git-Url: https://git.gag.com/?a=commitdiff_plain;h=75fe3514748e29bd950b57b74ee8751fafdf5f20;p=web%2Faltusmetrum Add initial MicroPeak page (not linked yet) Signed-off-by: Keith Packard --- diff --git a/MicroPeak/index.mdwn b/MicroPeak/index.mdwn new file mode 100644 index 0000000..5c73257 --- /dev/null +++ b/MicroPeak/index.mdwn @@ -0,0 +1,60 @@ +# MicroPeak + +This is a peak-recording barometric altimeter for precision model +rocketry altitude measurements. + + + +Production units will be available from the +[Garbee and Garbee](http://auric.gag.com) web +store. + +## Features ## + + * Measure ground pressure and peak altitude pressure. + * Blue LED blinks out maximum height in decimeters. + * 18mm x 14mm. 1.9g including battery. + * Power switch. + +The CR1025 battery holder is mounted on the back side of the board, so there are no external wires or batteries to manage. +Here's a close-up view: + + + +### Software features ### + + * Saves last flight data to non-volatile memory. + * Reports previous flight on power-on. + * Automatically shuts down on landing to preserve battery. + +### Developer View ### + + * Hardware Features + * [ATMEL ATtiny85](http://www.atmel.com/devices/attiny85.aspx) Microcontroller + * 8K flash + * 512B RAM + * 512B EEPROM + * SPI/I2C interface + * [Measurement Specialties MS5607](http://www.meas-spec.com/product/t_product.aspx?id=8499) Micro Altimeter Module + * Wide range — 120kPa to 1kPa (approximately -1500m to 31000m) + * High precision — 2.4Pa resolution (approximately 20cm at sea level) + * Factory calibrated. + * CR1025 Lithium Battery + * 30mAh. Runs MicroPeak for 15 hours on the pad or in flight + * Standard 6-pin AVR programming interface. + + * Software Features + * Written in C + * Samples pressure every 96ms + * Detect boost with 4m altitude change + * Exponential averaging filter to minimize transient effects. + + * Tools Used + * [gEDA](http://www.gpleda.org/) for schematic capture and PCB layout + * [GCC](http://gcc.gnu.org) as an AVR cross-compiler + + * Licenses + * The hardware is licensed under the [TAPR](http://www.tapr.org) [Open Hardware License](http://www.tapr.org/ohl.html) + * The software is licensed [GPL version 2](http://www.gnu.org/licenses/old-licenses/gpl-2.0.html) + diff --git a/MicroPeak/v0.1/micropeak-640.jpg b/MicroPeak/v0.1/micropeak-640.jpg new file mode 100644 index 0000000..302a786 Binary files /dev/null and b/MicroPeak/v0.1/micropeak-640.jpg differ diff --git a/MicroPeak/v0.1/micropeak-dime-640.jpg b/MicroPeak/v0.1/micropeak-dime-640.jpg new file mode 100644 index 0000000..aa3990f Binary files /dev/null and b/MicroPeak/v0.1/micropeak-dime-640.jpg differ diff --git a/MicroPeak/v0.1/micropeak-dime.jpg b/MicroPeak/v0.1/micropeak-dime.jpg new file mode 100644 index 0000000..29d7745 Binary files /dev/null and b/MicroPeak/v0.1/micropeak-dime.jpg differ diff --git a/MicroPeak/v0.1/micropeak.jpg b/MicroPeak/v0.1/micropeak.jpg new file mode 100644 index 0000000..96453ca Binary files /dev/null and b/MicroPeak/v0.1/micropeak.jpg differ