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 ### Latest version (1.2) ###
37 * [Windows](releases/1.2/MicroPeak-Windows-1-2.exe)
38 * [Linux](releases/1.2/MicroPeak-Linux-1.2.tar.bz2)
39 * [Mac OS X](releases/1.2/MicroPeak-Mac-1.2.dmg)
41 ## Hardware Features ##
43 * Measure ground pressure and peak altitude pressure.
44 * Logs 48 seconds of flight data
45 * Orange LED blinks out maximum height in decimeters.
46 * 18mm x 14mm. 1.9g including battery.
49 The CR1025 battery holder is mounted on the back side of the board, so there are no external wires or batteries to manage.
51 ## Software features ##
53 * Saves last flight data to non-volatile memory.
54 * Reports previous flight on power-on.
55 * Automatically shuts down on landing to preserve battery.
59 MicroPeak includes an integrated battery holder on the back side of
62 <a href="v1.0/micropeak-back.jpg"><img
63 src="v1.0/micropeak-back-640.jpg"></a>
67 Here's a close-up view of the hardware
69 <a href="v1.0/micropeak.jpg"><img src="v1.0/micropeak-640.jpg"></a>
72 * [ATMEL ATtiny85](http://www.atmel.com/devices/attiny85.aspx) Microcontroller
77 * [Measurement Specialties MS5607](http://www.meas-spec.com/product/t_product.aspx?id=8499) Micro Altimeter Module
78 * Wide range — 120kPa to 1kPa (approximately -1500m to 31000m)
79 * High precision — 2.4Pa resolution (approximately 20cm at sea level)
81 * CR1025 Lithium Battery
82 * 30mAh. Runs MicroPeak for more than 40 hours on the pad or in flight
83 * [OSRAM LO T67K](http://catalog.osram-os.com/catalogue/catalogue.do?favOid=000000000002269f00090023&act=showBookmark) orange LED
84 * Standard 6-pin AVR programming interface.
88 * Samples pressure every 96ms
89 * Delay 30s after power-on to finish airframe prep
90 * Detect boost with 10m altitude change
91 * Exponential averaging filter to minimize transient effects.
94 * [gEDA](http://www.gpleda.org/) for schematic capture and PCB layout
95 * [GCC](http://gcc.gnu.org) as an AVR cross-compiler
98 * The hardware is licensed under the [TAPR](http://www.tapr.org) [Open Hardware License](http://www.tapr.org/ohl.html)
99 * The software is licensed [GPL version 2](http://www.gnu.org/licenses/old-licenses/gpl-2.0.html)
101 <center><img src="../logos/micropeak.svg" height="64"/>