1 [[!meta title="EasyMini"]]
4 This is a small, baro-only recording dual-deploy altimeter for
7 EasyMini version 2.0 is available from the
8 [Garbee and Garbee](https://shop.gag.com) web store
9 and from our distributors.
11 For the latest EasyMini firmware and related ground station software,
12 please visit the [AltOS](../AltOS) page on this site. EasyMini
13 version 2.0 requires AltOS version 1.8.4 or later.
15 These are photos of version 2.0:
17 <a href="v2.0/easymini-v2.0-top.jpg"> <img src="v2.0/easymini-v2.0-top-thumb.jpg"></a>
18 <a href="v2.0/easymini-v2.0-bottom.jpg"> <img src="v2.0/easymini-v2.0-bottom-thumb.jpg"></a>
24 * Recording altimeter for model rocketry
25 * Supports dual deployment (can fire 2 ejection charges)
26 * Barometric pressure sensor good to 100k feet MSL
27 * Designed to use a battery supplying 3.7V-12V.
28 * 1.5 x 0.8 inch board designed to fit inside 24mm airframe coupler tube
29 * 1MB on-board data logging flash
30 * Weighs only 6.5g (less than 1/4 oz)
32 ### Developer View ###
35 * [STM32F042](http://www.st.com/en/microcontrollers/stm32f042f6.html) System-on-Chip
40 * 8 12-bit analog inputs
41 * I2C, SPI, async serial
43 * [Measurement Specialties MS5607](http://www.meas-spec.com/product/pressure/MS5607-02BA03.aspx) pressure sensor
46 * Written mostly in C with some ARM assembler
47 * Runs from on-chip flash, uses on-chip RAM, stores flight data to
50 * [gEDA](http://www.gpleda.org/) for schematic capture and PCB layout
51 * [GCC](http://gcc.gnu.org/) compiler and source debugger
53 * The hardware is licensed under the [TAPR](http://www.tapr.org) [Open Hardware License](http://www.tapr.org/ohl.html)
54 * The software is licensed [GPL version 2](http://www.gnu.org/licenses/old-licenses/gpl-2.0.html)
58 There is a shorter manual for EasyMini which is available in
59 [html](../AltOS/doc/easymini.html) and
60 [pdf](../AltOS/doc/easymini.pdf) formats. EasyMini is also documented
61 in the comprehensive Altus Metrum manual in
62 [html](../AltOS/doc/altusmetrum.html) and
63 [pdf](../AltOS/doc/altusmetrum.pdf) formats
65 An outline of the board with drill hole locations is available in
66 [pdf](../Documents/easymini-outline.pdf) format.
68 Thanks to Bryan Duke, there's also a 3d model of EasyMini available on
69 [Thingiverse](http://www.thingiverse.com/thing:1946852).
71 The hardware design files can be found on [git.gag.com](http://git.gag.com)
72 in the project [hw/easymini](http://git.gag.com/?p=hw/easymini;a=summary).
74 For those who don't have ready access to the gEDA suite, here are pdf snapshots
75 of the files for production PCB version 1.0 in more easily readable form.
77 * [schematic](v2.0/easymini-sch.pdf)
78 * [pcb artwork](v2.0/easymini-pcb.pdf)
82 Easy Mini [version 1.0](v1.0) was largely the same design but used a