EasyTimer firmware and associated configuration software is part of the
[AltOS](../AltOS) suite.
-Photos of the first production unit:
+Photos of the first production unit (the current version 2 looks nearly
+identical!):
<a href="v1/easytimer_v1_top.jpg"> <img src="v1/easytimer_v1_top-thumb.jpg"></a>
<a href="v1/easytimer_v1_smt.jpg"> <img src="v1/easytimer_v1_smt-thumb.jpg"></a>
-EasyTimer v1 is available for sale now at
+EasyTimer v2 is available for sale now at
[Bdale's web store](http://shop.gag.com/flight-computers/easytimer.html)
and from Altus Metrum distributors.
## Artifacts ##
+There is a single manual for EasyTimer and most other Altus Metrum products,
+which is available in [html](../AltOS/doc/altusmetrum.html) and
+[pdf](../AltOS/doc/altusmetrum.pdf) formats.
+
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/easytimer](http://git.gag.com/?p=hw/easytimer;a=summary).
+For those who don't have ready access to the gEDA suite, here are pdf snapshots
+of the files for current production PCB version 2 in more easily readable form:
+
+* [schematic](v2/easytimer-sch.pdf)
+* [pcb artwork](v2/easytimer-pcb.pdf)
+* [bill of materials](v2/partslist.csv)
+
+## Previous Versions ##
+
+All versions of EasyTimer have the same user-visible features and
+specifications, except that v1 did not contain on-board flash data storage
+making post-flight analysis .. "challenging". Other than that, the
+differences are primarily in the choice of processor and sensors, which
+is driven by availability.
+
+Here are the schematics, artwork, and bill of materials for version 1:
+
+* [schematic](v1/easytimer-sch.pdf)
+* [pcb artwork](v1/easytimer-pcb.pdf)
+* [bill of materials](v1/partslist.csv)
+
projects / web / altusmetrum / blobdiff