3 This is a small, baro-only recording dual-deploy altimeter for
6 EasyMini is available from the [Garbee and Garbee](https://shop.gag.com) web
7 store, and should be available from our distributors soon.
9 For the latest EasyMini firmware and related ground station software, please
10 visit the [AltOS](../AltOS) page on this site.
12 These are photos of a prototype version, we haven't take photos of the
15 <a href="v0.2/easymini-top.jpg"> <img src="v0.2/easymini-top-thumb.jpg"></a>
16 <a href="v0.2/easymini-parts.jpg"> <img src="v0.2/easymini-parts-thumb.jpg"></a>
22 * Recording altimeter for model rocketry
23 * Supports dual deployment (can fire 2 ejection charges)
24 * Barometric pressure sensor good to 100k feet MSL
25 * Designed to use a battery supplying 3.7V-12V.
26 * 1.5 x 0.8 inch board designed to fit inside 24mm airframe coupler tube
27 * 2MB on-board data logging flash
29 ### Developer View ###
32 * [NXP LPC11U14](http://www.nxp.com/products/microcontrollers/cortex_m0_m0/LPC11U14FHI33.html) System-on-Chip
37 * 8 12-bit analog inputs
38 * I2C, SPI, async serial
40 * [Measurement Specialties MS5607](http://www.meas-spec.com/product/pressure/MS5607-02BA03.aspx) pressure sensor
43 * Written mostly in C with some ARM assembler
44 * Runs from on-chip flash, uses on-chip RAM, stores flight data to
47 * [gEDA](http://www.gpleda.org/) for schematic capture and PCB layout
48 * [GCC](http://gcc.gnu.org/) compiler and source debugger
50 * The hardware is licensed under the [TAPR](http://www.tapr.org) [Open Hardware License](http://www.tapr.org/ohl.html)
51 * The software is licensed [GPL version 2](http://www.gnu.org/licenses/old-licenses/gpl-2.0.html)
55 There is a single manual for EasyMini and all other Altus Metrum products,
56 which is available in [html](../AltOS/doc/altusmetrum.html) and
57 [pdf](../AltOS/doc/altusmetrum.pdf) formats.
59 The hardware design files can be found on [git.gag.com](http://git.gag.com)
60 in the project [hw/easymini](http://git.gag.com/?p=hw/easymini;a=summary).
62 For those who don't have ready access to the gEDA suite, here are pdf snapshots
63 of the files for production PCB version 1.0 in more easily readable form.
65 * [schematic](v1.0/easymini-sch.pdf)
66 * [pcb artwork](v1.0/easymini-pcb.pdf)