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authorNicolas2008-09-19 23:01:40 +0200
committerNicolas2008-09-19 23:01:40 +0200
commit620238df030bc94c5a02a4f470c31a7c63a52a3c (patch)
treef3a33ae9b5eaac2b7029f207ba335c48f65911aa
Initial commit.
-rw-r--r--binwatch.brdbin0 -> 12351 bytes
-rw-r--r--binwatch.lbrbin0 -> 2217 bytes
-rw-r--r--binwatch.schbin0 -> 114195 bytes
-rw-r--r--doc/capa.py21
-rw-r--r--doc/comb12
-rw-r--r--doc/notes57
6 files changed, 90 insertions, 0 deletions
diff --git a/binwatch.brd b/binwatch.brd
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+++ b/binwatch.brd
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diff --git a/binwatch.lbr b/binwatch.lbr
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--- /dev/null
+++ b/binwatch.lbr
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diff --git a/binwatch.sch b/binwatch.sch
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diff --git a/doc/capa.py b/doc/capa.py
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+++ b/doc/capa.py
@@ -0,0 +1,21 @@
+#!/usr/bin/python
+# encoding: utf-8
+ppj = 15
+dur_s = 3
+leds = 5
+pdw_uA = 0.45
+pup_uA = 70
+led_mA = 2
+
+pj_pdw_mAH = 24 * pdw_uA * 1e-3
+pj_led_mAH = ppj * (leds * led_mA + pup_uA * 1e-3) * dur_s / 3600.0
+
+pj_mAH = pj_pdw_mAH + pj_led_mAH
+
+print "µAH/jour"
+print " pdw : %.1f" % (pj_pdw_mAH * 1e3)
+print " led : %.1f" % (pj_led_mAH * 1e3)
+print " total : %.1f" % (pj_mAH * 1e3)
+
+for c in (16, 40, 80, 120):
+ print "avec %3d mAH : %d jours" % (c, c / pj_mAH)
diff --git a/doc/comb b/doc/comb
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--- /dev/null
+++ b/doc/comb
@@ -0,0 +1,12 @@
+01--
+0-1-
+0--1
+10--
+1-0-
+1--0
+-01-
+-0-1
+-10-
+-1-0
+--10
+--01
diff --git a/doc/notes b/doc/notes
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+++ b/doc/notes
@@ -0,0 +1,57 @@
+
+Charlieplexing:
+ - http://electronicdesign.com/Articles/Index.cfm?AD=1&ArticleID=15512
+ - http://www.tinaja.com/glib/muse152.pdf
+ - http://pdfserv.maxim-ic.com/en/an/AN1880.pdf
+ - http://en.wikipedia.org/wiki/Charlieplexing
+
+I/O expanders:
+ - MAX7317
+
+Other's projects:
+ - http://www.instructables.com/id/Microdot---wrist-watch-LED-pattern-timepiece/
+ - http://www.instructables.com/id/01atch/
+ - http://www.vk2zay.net/article.php/169
+
+Capteur d'accélération : MXC62020JV — MEMSIC
+
+ATtiny45V 1.8V, 2.5 €
+70µA @32kHz, ça doit être possible.
+4µA en power down avec watchdog 0.2µA sans
+
+On peut essayer d'utiliser un composant externe pour maintenir l'heure afin
+d'utiliser moins de courant.
+ mils CE com alim tk active alarm
+ - M42T81
+ - DS1302 300 CE SERIAL 2 200n 15u 0 X
+ - DS1337 120 I2C 1 450n 40u 2
+ - DS1338 120 I2C 2 800n 110u 0 X
+ - HT1380 300 RST SERIAL 1 700n 700n 0 X
+ - PCF8563 300 I2C 1 250n 200u 1 *
+ - RV-8564-C2 idem, avec quartz *
+ - PCF8583 300 I2C 1 2000n X
+
+Choix : RV-8564-C2
+
+Crystal : 40kOhm, //: 10pF, trim: 5-25pF
+Prévoir une capa de trim à régler.
+
+Led : 200_mcd @ 20mA, 2V, KP-2012SURC, 852-9930
+
+Pile :
+ Tech mAh @ V n V
+ - CR1632 Li 130 2 3
+
+http://fr.farnell.com/1083712/electromecanique-energie/product.us0?sku=varta-65013201501
+http://data.energizer.com/
+http://fr.farnell.com/jsp/search/browse.jsp?N=581+401+1001313+319418+319359+319362+319365+319366+319367+319368+117639+117931+117942+117949+118134&Ns=ATRB_SORT_004_Capacit%C3%A9_216%7c1
+
+dimensions :
+ - platine : 19
+ - intérieur cadran : 17
+ - profondeur : 4.8
+ - hauteur sous verre : 2
+ - largeur sous couvercle : 18.5
+
+
+ - trouver un moyen de l'alimenter pendant le dev