1 [[!meta title="MicroPeak"]]
2 <img src="../logos/micropeak-oneline.svg" height="100"/>
4 # Introducing MicroPeak by AltusMetrum #
6 Micropeak is a barometric logging altimeter for precision model
7 rocketry altitude measurements.
9 <a href="v1.0/micropeak-dime.jpg"><img
10 src="v1.0/micropeak-dime-640.jpg"></a>
12 Production units are available from the
13 [Garbee and Garbee](http://auric.gag.com/index.php?route=product/product&product_id=80)
14 web store and [Apogee Components](http://www.apogeerockets.com/Electronics_Payloads/Altimeters/MicroPeak_Altimeter)
16 Data download is available using the [MicroPeak USB adapter](../MicroPeakUSB).
20 The MicroPeak manual is available in
21 [html](../AltOS/doc/micropeak.html) and
22 [pdf](../AltOS/doc/micropeak.pdf) formats.
26 The MicroPeak application runs on Linux, Mac OS X and Windows. It
27 communicates with the [MicroPeak USB adapter](../MicroPeakUSB) to download and analyze
28 flight data. It's written in [Java](http://java.com) and offers the
29 same functionality and interface on all three platforms. It uses the
30 FTDI USB Serial drivers to communicate with the hardware. If you're
31 running Mac OS X or Windows, a compatible version of those drivers is
32 included with the software. You can also install a different from from
33 the [FTDI Driver](http://www.ftdichip.com/FTDrivers.htm) page.
35 [[!inline pages="./releases/* and !*/Discussion and !*.html and !*.bz2 and !*.zip and !*.exe" show="10" rss="no" raw="yes" ]]
37 ## Hardware Features ##
39 * Measure ground pressure and peak altitude pressure.
40 * Logs 48 seconds of flight data
41 * Orange LED blinks out maximum height in decimeters.
42 * 18mm x 14mm. 1.9g including battery.
45 The CR1025 battery holder is mounted on the back side of the board, so there are no external wires or batteries to manage.
47 ## Software features ##
49 * Saves last flight data to non-volatile memory.
50 * Reports previous flight on power-on.
51 * Automatically shuts down on landing to preserve battery.
55 MicroPeak includes an integrated battery holder on the back side of
58 <a href="v1.0/micropeak-back.jpg"><img
59 src="v1.0/micropeak-back-640.jpg"></a>
63 Here's a close-up view of the hardware
65 <a href="v1.0/micropeak.jpg"><img src="v1.0/micropeak-640.jpg"></a>
68 * [ATMEL ATtiny85](http://www.atmel.com/devices/attiny85.aspx) Microcontroller
73 * [Measurement Specialties MS5607](http://www.meas-spec.com/product/t_product.aspx?id=8499) Micro Altimeter Module
74 * Wide range — 120kPa to 1kPa (approximately -1500m to 31000m)
75 * High precision — 2.4Pa resolution (approximately 20cm at sea level)
77 * CR1025 Lithium Battery
78 * 30mAh. Runs MicroPeak for more than 40 hours on the pad or in flight
79 * [OSRAM LO T67K](http://catalog.osram-os.com/catalogue/catalogue.do?favOid=000000000002269f00090023&act=showBookmark) orange LED
80 * Standard 6-pin AVR programming interface.
84 * Samples pressure every 96ms
85 * Delay 30s after power-on to finish airframe prep
86 * Detect boost with 10m altitude change
87 * Exponential averaging filter to minimize transient effects.
90 * [gEDA](http://www.gpleda.org/) for schematic capture and PCB layout
91 * [GCC](http://gcc.gnu.org) as an AVR cross-compiler
94 * The hardware is licensed under the [TAPR](http://www.tapr.org) [Open Hardware License](http://www.tapr.org/ohl.html)
95 * The software is licensed [GPL version 2](http://www.gnu.org/licenses/old-licenses/gpl-2.0.html)
97 <center><img src="../logos/micropeak.svg" height="64"/>