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