1 [[!meta title="MicroPeak"]]
2 <center><img src="../logos/altusmetrum-oneline.svg" width="320"/></center>
5 <img src="../logos/micropeak-oneline.svg" height="100"/>
8 # Introducing MicroPeak by AltusMetrum #
10 Micropeak is a peak-recording barometric altimeter for precision model
11 rocketry altitude measurements.
13 <a href="v0.1/micropeak-dime.jpg"><img
14 src="v0.1/micropeak-dime-640.jpg"></a>
16 Production units will be available from the
17 [Garbee and Garbee](http://auric.gag.com) web
22 The MicroPeak manual is available in
23 [html](../AltOS/doc/micropeak.html) and
24 [pdf](../AltOS/doc/micropeak.pdf) formats.
26 ## Hardware Features ##
28 * Measure ground pressure and peak altitude pressure.
29 * Blue LED blinks out maximum height in decimeters.
30 * 18mm x 14mm. 1.9g including battery.
33 The CR1025 battery holder is mounted on the back side of the board, so there are no external wires or batteries to manage.
35 ## Software features ##
37 * Saves last flight data to non-volatile memory.
38 * Reports previous flight on power-on.
39 * Automatically shuts down on landing to preserve battery.
43 MicroPeak includes an integrated battery holder on the back side of
46 <a href="v0.1/micro-peak-back.jpg"><img
47 src="v0.1/micro-peak-back-640.jpg"></a>
51 Here's a close-up view of the hardware
53 <a href="v0.1/micropeak.jpg"><img src="v0.1/micropeak-640.jpg"></a>
56 * [ATMEL ATtiny85](http://www.atmel.com/devices/attiny85.aspx) Microcontroller
61 * [Measurement Specialties MS5607](http://www.meas-spec.com/product/t_product.aspx?id=8499) Micro Altimeter Module
62 * Wide range — 120kPa to 1kPa (approximately -1500m to 31000m)
63 * High precision — 2.4Pa resolution (approximately 20cm at sea level)
65 * CR1025 Lithium Battery
66 * 30mAh. Runs MicroPeak for 15 hours on the pad or in flight
67 * Standard 6-pin AVR programming interface.
71 * Samples pressure every 96ms
72 * Detect boost with 4m altitude change
73 * Exponential averaging filter to minimize transient effects.
76 * [gEDA](http://www.gpleda.org/) for schematic capture and PCB layout
77 * [GCC](http://gcc.gnu.org) as an AVR cross-compiler
80 * The hardware is licensed under the [TAPR](http://www.tapr.org) [Open Hardware License](http://www.tapr.org/ohl.html)
81 * The software is licensed [GPL version 2](http://www.gnu.org/licenses/old-licenses/gpl-2.0.html)
84 <center><img src="../logo.svg" width="100"/></center>