add some usage photos to the EasyMotor page

[web/altusmetrum] / EasyMotor / index.mdwn

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 This board is designed for in-flight characterization of research rocket
 motors.  It records chamber pressure and acceleration to an on-board flash
 memory chip, the contents of which can be downloaded after flight over USB.  
-It can also be attached to a [TeleMetrum](../TeleMetrum) or
-[TeleMega](../TeleMega) using the companion interface to allow a subset of
-the data to be included in radio telemetry during the flight.
-
-There is no EasyMotor firmware yet, but it will be part of the 
-[AltOS](../AltOS) suite eventually.
-
-Prototypes of v1 are underway.  This design is not yet for sale.
 
 ## Features ##
 
 ### User View ###
 
 * Data logger storing motor chamber pressure and acceleration
-* 1-axis 200-g accelerometer
+* supports inexpensive 5V analog output pressure sensors
+* 3-axis 200-g accelerometer
 * On-board non-volatile memory for flight data storage
 * USB for configuration, and data recovery
 * Designed for use with a battery from 9-12V
-* 1.65 x 1 inch board
+* 1.5 x 0.8 inch board
+
+## Example Installations ##
+
+These photos are from snap-ring case forward closures machined by Bdale for
+test flights of EasyMotor.  The sensor bodies are 316 stainless with a 1/8 NPT
+male boss, so the approach chosen is to drill a 1/8 inch touch hole all the
+way through the closure, then drill and tap 1/8 NPT female threads part way
+through the closure thickness.  The hole gets filled with grease and the 
+sensor screwed in.
+
+<a href="photos/IMG_20200905_112722.jpg"> <img src="photos/IMG_20200905_112722-thumb.jpg"></a>
+<a href="photos/IMG_20200907_101910.jpg"> <img src="photos/IMG_20200907_101910-thumb.jpg"></a>
+<a href="photos/IMG_20201010_142952.jpg"> <img src="photos/IMG_20201010_142952-thumb.jpg"></a>
 
 ## Artifacts ##
 
-The hardware design current gEDA files are available from 
+The firmware for this product is part of the [AltOS](../AltOS) suite.
+
+This board was designed using lepton-eda and pcb-rnd.
+
+The hardware design files are available from 
 [git.gag.com](http://git.gag.com) in the project 
 [hw/easymotor](http://git.gag.com/?p=hw/easymotor;a=summary).  
 
+## Availability ##
+
+Prototypes of v2 were built and successfully flown.  An initial production 
+batch is now underway, and we hope these will be for sale around the end of
+calendar year 2020.