Added a license and basic readme.

hw: imported the SCAD and rendered layers
src: renamed hw to src
2019-03-10 20:35:33 +01:00 · 2019-03-10 20:35:03 +01:00 · 2018-12-29 16:55:08 +01:00 · 2018-12-29 16:54:53 +01:00 · 2018-12-29 16:28:55 +01:00 · 2018-12-29 14:24:16 +01:00
25 changed files with 2263 additions and 274 deletions
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1 @@
+*.stamp
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@ -0,0 +1,28 @@
+# How to Contribute
+
+We'd love to accept your patches and contributions to this project. There are
+just a few small guidelines you need to follow.
+
+## Contributor License Agreement
+
+Contributions to this project must be accompanied by a Contributor License
+Agreement. You (or your employer) retain the copyright to your contribution,
+this simply gives us permission to use and redistribute your contributions as
+part of the project. Head over to <https://cla.developers.google.com/> to see
+your current agreements on file or to sign a new one.
+
+You generally only need to submit a CLA once, so if you've already submitted one
+(even if it was for a different project), you probably don't need to do it
+again.
+
+## Code reviews
+
+All submissions, including submissions by project members, require review. We
+use GitHub pull requests for this purpose. Consult
+[GitHub Help](https://help.github.com/articles/about-pull-requests/) for more
+information on using pull requests.
+
+## Community Guidelines
+
+This project follows [Google's Open Source Community
+Guidelines](https://opensource.google.com/conduct/).
--- a/202
+++ b/202
@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
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+   See the License for the specific language governing permissions and
+   limitations under the License.
--- a/README.md
+++ b/README.md
@ -0,0 +1,71 @@
+# wordclock - a word clock
+
+mlhx@google.com / michaelh@juju.nz
+
+wordclock is a clock that shows the current time as words such as
+"five past eight" or "quarter to three".  The clock is approximately
+400 mm x 400 mm square and uses RGB LEDs to light up the words.  The
+LEDs are driven by a ESP8266 and the time and time zone is
+asutomatically fetched from the Internet.
+
+## Mechanics
+
+See 
+The hardware is made up of four layers of 4 mm laser cut plywood.  The
+default design cuts this from 8 A3 sheets which are then overlapped,
+although it should be easy to modify if your laser cutter has a 400 x
+400 mm work area.
+
+The layers are:
+
+- A backing layer
+- The LED layer which has a snake pattern for laying the LEDs in
+- The mask layer, which has a cut out for each LED
+- The word layer
+
+Normal laser printer paper is sandwiched between the mask and word
+layers as a diffuser.
+
+The layers are held together using 8x M4 bolts.
+
+## Electronics
+
+The electronics consists of a 5 m strip of WS2812B LEDs driven by an
+ESP8266.  A 5 V 3 A supply feeds the ESP8266 and a 1N5401 between the
+5 V supply and the LEDs drops the supply enough so the 3.3 V output
+from the ESP8266 can reliably drive the LEDs.
+
+The LEDs are the 30 LED/m model arranged in a 11 wide by 10 high
+grid.  The LEDs snake through the hardware with the first LED being in
+the bottom right.
+
+## Firmware
+
+The firmware uses CircuitPython 3.0, periodically reads the local time
+from a custom time server, and fades from one set of words to the next
+when the words change.
+
+## Services
+
+A small API returns the local time of the caller by looking up the
+timezone based on the IPv4 address.
+
+## License
+
+Copyright 2019 Google LLC
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+https://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+## Disclaimer
+
+This is not an official Google product.
--- a/hw/asynced.py
+++ b/hw/asynced.py
@ -1,23 +0,0 @@
-import utime
-
-
-def delay(secs: float) -> generator:
-    end = utime.ticks_add(utime.ticks_ms(), int(secs * 1000))
-    while utime.ticks_diff(end, utime.ticks_ms()) >= 0:
-        yield None
-
-
-def fps(dt: float):
-    dt = int(dt * 1000)
-    until = utime.ticks_add(utime.ticks_ms(), dt)
-    while True:
-        d = utime.ticks_diff(until, utime.ticks_ms())
-        until = utime.ticks_add(until, dt)
-        if d > 0:
-            utime.sleep_ms(d)
-        yield None
-
-
-def test():
-    for f in delay(2.0):
-        print(utime.ticks_ms())
--- a/hw/clock.py
+++ b/hw/clock.py
@ -1,237 +0,0 @@
-#import time
-#import urequest as request
-import urllib.urequest
-import ujson
-import utime
-
-import asynced
-import iptime
-
-RANGES = {
-    'w': 94,
-    'seven': 88,
-    'we': 94,
-    'cl': 102,
-    'le': 80,
-    't': 109,
-    'qua': 17,
-    'd': 12,
-    'ne': 63,
-    'q': 19,
-    'ex': 31,
-    'ar': 16,
-    'hal': 41,
-    'ac': 20,
-    'y': 27,
-    'k': 99,
-    'twelve': 93,
-    'ha': 42,
-    'es': 62,
-    'lock': 99,
-    'pa': 44,
-    'h': 84,
-    'quarter': 13,
-    'aster': 45,
-    'eleven': 77,
-    'ns': 106,
-    'se': 105,
-    'five': 70,
-    'pas': 44,
-    'clock': 99,
-    'p': 44,
-    'lo': 101,
-    'went': 23,
-    'nes': 62,
-    'paste': 44,
-    'ur': 68,
-    'rte': 14,
-    'e': 105,
-    'six': 60,
-    'st': 46,
-    'amp': 7,
-    'three': 55,
-    'tense': 105,
-    'our': 67,
-    'x': 60,
-    'ten': 107,
-    'sixth': 58,
-    'quart': 15,
-    'eight': 83,
-    'n': 107,
-    'v': 97,
-    'tens': 106,
-    'l': 102,
-    'to': 33,
-    's': 106,
-    'nine': 51,
-    'four': 66,
-    'rd': 12,
-    'twentyfive': 22,
-    'art': 15,
-    'wen': 23,
-    'vent': 90,
-    'as': 45,
-    'er': 48,
-    'am': 7,
-    'its': 0,
-    'halfs': 39,
-    'oclock': 99,
-    'vet': 72,
-    'two': 74,
-    'eve': 89,
-    'ty': 26,
-    're': 56,
-    'pm': 9,
-    'o': 101,
-    'si': 61,
-    'fs': 39,
-    'run': 49,
-    'it': 0,
-    'even': 89,
-    'past': 44,
-    'f': 70,
-    'm': 10,
-    'r': 69,
-    'event': 89,
-    'a': 45,
-    'g': 85,
-    'ru': 49,
-    'c': 100,
-    'twenty': 22,
-    'vex': 30,
-    'half': 40,
-    'sis': 2,
-    'th': 58,
-    'is': 3,
-    'al': 41,
-    'in': 52,
-    'one': 63,
-    'i': 86,
-    'on': 64,
-    'ni': 51,
-    'ive': 71,
-    'u': 68,
-    'ones': 62,
-    'sam': 6,
-    'ts': 1
-}
-
-MINUTES = ('oclock', 'five past', 'ten past', 'quarter past', 'twenty past',
-           'twentyfive past', 'half past', 'twentyfive to', 'twenty to',
-           'quarter to', 'ten to', 'five to')
-
-HOURS = ('twelve', 'one', 'two', 'three', 'four', 'five', 'six', 'seven',
-         'eight', 'nine', 'ten', 'eleven')
-
-AMPM = ('am', 'pm')
-
-
-def split(secs: int) -> tuple:
-    mins = (secs // 60) % 60
-    minute = mins // 5
-    hour = (secs // 3600) % 24
-    if mins >= 35:
-        hour += 1
-    ampm = (hour // 12) % len(AMPM)
-    hour %= len(HOURS)
-    return MINUTES[minute], HOURS[hour], AMPM[ampm]
-
-
-class Frame:
-    Max = 255
-
-    def __init__(self, n: int=11 * 10, pixels: list=None):
-        if pixels is None:
-            pixels = [0] * n
-        self.pixels = pixels
-
-    def set(self, idx: int) -> Frame:
-        self.pixels[idx] = self.Max
-        return self
-
-    def __add__(self, other):
-        return Frame(pixels=[
-            min(self.Max, x + y) for x, y in zip(self.pixels, other.pixels)
-        ])
-
-    def muldiv(self, num: int, den: int):
-        return Frame(pixels=[x * num // den for x in self.pixels])
-
-
-def render(words: list) -> Frame:
-    f = Frame()
-    for word in words:
-        for w in word.split():
-            idx = RANGES[w]
-            for i in range(len(w)):
-                f.set(idx + i)
-    return f
-
-
-def show(f: Frame):
-    print('\033\143')
-    stride = 11
-    dots = ' .:~*#@'
-    for y in range(len(f.pixels) // stride):
-        s = f.pixels[y * stride:(y + 1) * stride]
-        if y & 1 != 0:
-            s.reverse()
-        d = [dots[x * len(dots) // (Frame.Max + 1)] for x in s]
-        print(''.join(d))
-    print()
-
-
-def sleep(secs: float):
-    utime.sleep_ms(int(secs * 1000))
-
-
-DT = 0.1
-
-
-def scan() -> generator:
-    f = Frame()
-    while True:
-        for i in range(len(f.pixels)):
-            yield f.set(i)
-            f = f.muldiv(80, 100)
-
-
-def run():
-    words = None
-    steps = int(2.0 / DT)
-    secs = iptime.day_sec()
-
-    # Flash until time is synced.
-    sc = scan()
-    fp = asynced.fps(0.2)
-    for s, meta in secs:
-        print(s, meta)
-        if s is not None and meta is not None:
-            break
-        yield next(sc)
-        next(fp)
-
-    src = Frame()
-    while True:
-        yield src
-        s, m2 = next(secs)
-        nxt = split(s)
-        print(nxt)
-        if nxt == words:
-            sleep(1)
-            continue
-        dest = render(nxt)
-        f = asynced.fps(DT)
-        for i in range(steps):
-            yield src.muldiv(steps - i, steps) + dest.muldiv(i, steps)
-            next(f)
-        words = nxt
-        src = dest
-
-
-def main2():
-    for f in run():
-        show(f)
-
-
-main2()
--- a/hw/layers/back_bottom.svg
+++ b/hw/layers/back_bottom.svg
@ -0,0 +1,16 @@
+<?xml version="1.0" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg width="410mm" height="239mm" viewBox="0 0 410 239" xmlns="http://www.w3.org/2000/svg" version="1.1">
+<title>OpenSCAD Model</title>
+<path d="
+M 410,-0 L 0,-0 L 0,239 L 410,239 z
+M 6.38196,101.902 L 5.38196,101.176 L 5,100 L 5.38196,98.8244 L 6.38196,98.0979 L 7.61803,98.0979
+ L 8.61803,98.8244 L 9,100 L 8.61803,101.176 L 7.61803,101.902 z
+M 402.382,101.902 L 401.382,101.176 L 401,100 L 401.382,98.8244 L 402.382,98.0979 L 403.618,98.0979
+ L 404.618,98.8244 L 405,100 L 404.618,101.176 L 403.618,101.902 z
+M 6.38196,233.902 L 5.38196,233.176 L 5,232 L 5.38196,230.824 L 6.38196,230.098 L 7.61803,230.098
+ L 8.61803,230.824 L 9,232 L 8.61803,233.176 L 7.61803,233.902 z
+M 402.382,233.902 L 401.382,233.176 L 401,232 L 401.382,230.824 L 402.382,230.098 L 403.618,230.098
+ L 404.618,230.824 L 405,232 L 404.618,233.176 L 403.618,233.902 z
+" stroke="black" fill="lightgray" stroke-width="0.5"/>
+</svg>
--- a/hw/layers/back_top.svg
+++ b/hw/layers/back_top.svg
@ -0,0 +1,16 @@
+<?xml version="1.0" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg width="410mm" height="171mm" viewBox="0 -171 410 171" xmlns="http://www.w3.org/2000/svg" version="1.1">
+<title>OpenSCAD Model</title>
+<path d="
+M 410,-171 L 0,-171 L 0,-0 L 410,-0 z
+M 6.38196,-162.098 L 5.38196,-162.824 L 5,-164 L 5.38196,-165.176 L 6.38196,-165.902 L 7.61803,-165.902
+ L 8.61803,-165.176 L 9,-164 L 8.61803,-162.824 L 7.61803,-162.098 z
+M 402.382,-162.098 L 401.382,-162.824 L 401,-164 L 401.382,-165.176 L 402.382,-165.902 L 403.618,-165.902
+ L 404.618,-165.176 L 405,-164 L 404.618,-162.824 L 403.618,-162.098 z
+M 6.38196,-30.0979 L 5.38196,-30.8244 L 5,-32 L 5.38196,-33.1756 L 6.38196,-33.9021 L 7.61803,-33.9021
+ L 8.61803,-33.1756 L 9,-32 L 8.61803,-30.8244 L 7.61803,-30.0979 z
+M 402.382,-30.0979 L 401.382,-30.8244 L 401,-32 L 401.382,-33.1756 L 402.382,-33.9021 L 403.618,-33.9021
+ L 404.618,-33.1756 L 405,-32 L 404.618,-30.8244 L 403.618,-30.0979 z
+" stroke="black" fill="lightgray" stroke-width="0.5"/>
+</svg>
--- a/hw/layers/diffuse_bottom.svg
+++ b/hw/layers/diffuse_bottom.svg
@ -0,0 +1,82 @@
+<?xml version="1.0" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg width="410mm" height="239mm" viewBox="0 0 410 239" xmlns="http://www.w3.org/2000/svg" version="1.1">
+<title>OpenSCAD Model</title>
+<path d="
+M 410,-0 L 0,-0 L 0,239 L 410,239 z
+M 58,30.1667 L 58,2.83334 L 85.3333,2.83334 L 85.3333,30.1667 z
+M 358,30.1667 L 358,2.83334 L 385.333,2.83334 L 385.333,30.1667 z
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+ L 315.991,-5.5 z
+" stroke="black" fill="lightgray" stroke-width="0.5"/>
+</svg>
--- a/hw/wordclock.scad
+++ b/hw/wordclock.scad
@ -0,0 +1,263 @@
+/* ITLISASAMPM */
+/* ACQUARTERDC */
+/* TWENTYFIVEX */
+/* FALFSTENFTO */
+/* PASTERUNINE */
+/* ONESIXTHREE */
+/* FOURFIVETWO */
+/* EIGHTELEVEN */
+/* SEVENTWELVE */
+/* TENSEOCLOCK */
+
+a3 = [297, 420];
+e = 0.2;
+
+// Overall is [335, 330] on [450, 450] with 58 mm margins.
+s = [410, 410, 4];
+
+module rcube(s, r=5) {
+	hull() {
+		for (x = [r, s[0]-r]) {
+			for (y = [r, s[1] - r]) {
+				translate([x, y, 0])
+					cylinder(r=r, s[2]);
+			}
+		}
+	}
+}
+
+// Size of one LED on a strip.
+sled = [100/3, 10+1, 3];
+
+module led_strip(n) {
+	dc = 28+2.5;
+	w = 10;
+	h = 3;
+	lh = 2;
+	d = 5;
+
+	cube([n*dc, w, h-lh]);
+	for (x = [0..dc*n]) {
+		translate([x, 0, 0])
+		difference() {
+			cube([d, d, h-lh]);
+			translate([d/2, d/2, h-1])
+				cylinder(d=(d-1), 1);
+		}
+	}
+}
+
+// Width and height in characters
+cx = 11;
+cy = 10;
+// Separation between LEDs
+dx = sled[0];
+dy = 35;
+t = 4;
+sleds = [dx*cx, dy*cy, t];
+
+module layer_plate() {
+	square([s[0], s[1]], center=false);
+}
+
+module mholes() {
+	inset = 7;
+	m = 4;
+	d = s[0] - inset*2;
+	for (x = [inset, s[0]-inset]) {
+		for (y = [inset:d/3:inset+d]) {
+			translate([x, y, 0])
+				circle(d=m, $fn=10);
+		}
+	}
+}
+
+module back_layer() {
+	difference() {
+		layer_plate();
+		mholes();
+	}
+}
+
+module led_layer() {
+	module cutout() {
+		// Done as a snake
+		// LED strips
+		for (y = [0:dy:dy*cy-1]) {
+			translate([sled[1]/2, y, 0])
+#				square([sled[0]*cx+sled[1], sled[1]]);
+		}
+		// Verticals
+		for (y = [0:dy*2:dy*cy-1]) {
+			translate([3, y, 0])
+				square([sled[1]-1, dy+sled[1]]);
+		}
+		for (y = [dy:dy*2:dy*(cy-1)-1]) {
+			translate([sled[0]*cx+sled[1]-3, y+cy-sled[1]+1, 0])
+				square([sled[1], dy+sled[1]]);
+		}
+	}
+	sc = [dx*cx+sled[1]*2, dy*(cy-1)+sled[1], 4];
+	difference() {
+		layer_plate();
+		translate((s-sc)/2)
+			cutout();
+		nodemcu();
+		mholes();
+	}
+}
+
+module holes_layer() {
+	// LED hole radius
+	lhr = 6;
+	module holes() {
+		for (y = [0:dy:dy*cy-1]) {
+			for (x = [0:dx:dx*cx-1]) {
+				translate([x+lhr, y+lhr, 0])
+					circle(r=lhr);
+			}
+		}
+	}
+	sh = [dx*(cx-1)+lhr*2, dy*(cy-1)+lhr*2, t];
+	difference() {
+		layer_plate();
+		translate((s-sh)/2)
+			holes();
+		nodemcu();
+		mholes();
+	}
+}
+
+module diffuse_layer() {
+	// LED hole radius
+	lhr = dx-6;
+	module holes() {
+		for (y = [0:dy:dy*cy-1]) {
+			for (x = [0:dx:dx*cx-1]) {
+				translate([x+lhr/2, y+lhr/2, 0])
+					square([lhr, lhr]);
+			}
+		}
+	}
+	sh = [dx*(cx-1)+lhr*2, dy*(cy-1)+lhr*2, t];
+	difference() {
+		layer_plate();
+		translate((s-sh)/2)
+			holes();
+		mholes();
+	}
+}
+
+// Diffuser sheet.
+sd = [340, 340, 5];
+
+module diffuser_layer() {
+	difference() {
+		layer_plate();
+		translate((s - sd)/2+[0, 0, -e])
+			cube(sd);
+		mholes();
+	}
+}
+
+// Front words panel
+
+module words_layer() {
+	module character(ch) {
+		if (len(search(str(ch), "APQRDO")) > 0) {
+			difference() {
+				text(text=ch, size=dy*.7, font="Bitstream Vera Sans Mono:style=Bold", halign="center");
+				translate([-.8-.3, -6, 0])
+					square([3, 30]);
+			}
+		} else {
+			text(text=ch, size=dy*.7, font="Bitstream Vera Sans Mono:style=Bold", halign="center");
+		}
+	}
+	module row(v) {
+		for (i = [0:len(v)-1]) {
+			translate([sled[0]*i, 0, 0])
+				character(v[i]);
+		}
+	}
+	module rows() {
+		texts = [
+			"ITSISASAMPM",
+			"ACQUARTERDC",
+			"TWENTYFIVEX",
+			"HALFSTENFTO",
+			"PASTERUNINE",
+			"ONESIXTHREE",
+			"FOURFIVETWO",
+			"EIGHTELEVEN",
+			"SEVENTWELVE",
+			"TENSOKYDUDE",
+			];
+		for (i = [0:len(texts)-1]) {
+			translate([0, dy*i, 0])
+				row(texts[len(texts)-i-1]);
+		}
+	}
+	difference() {
+		layer_plate();
+		translate((s-sleds+[dx, dy, 0])/2 + [0, -11, 0])
+			rows();
+		mholes();
+	}
+}
+
+module nodemcu(h=t*2) {
+	sn = [26, 48+8, h];
+	susb = [10, 20, h];
+	translate([s[0]-susb[0]*2, 10, 0])
+	rotate(90, [0, 0, 1]) {
+		translate([(sn[0]-susb[0])/2, -susb[1], 0])
+			square([susb[0], susb[1]], center=false);
+		square([sn[0], sn[1]], center=false);
+			}
+}
+
+module clock() {
+	back_layer();
+	translate([0, 0, t*1])
+		led_layer();
+	translate([0, 0, t*2])
+		holes_layer();
+	translate([0, 0, t*3])
+		diffuser_layer();
+	translate([0, 0, t*4])
+		words_layer();
+}
+
+
+module sliced(c, o) {
+	h = 600;
+	difference() {
+		translate([0, -c, 0])
+			children();
+		translate([-10, o*h, 0])
+			square(h);
+	}
+}
+
+module slice_bottom() {
+	sliced(cut, 0) children();
+}
+
+module slice_top() {
+	sliced(cut, -1) children();
+}
+
+// cut is how far up to cut the layer into two parts.
+cut = 410-(410-297+58);
+
+// The following is a bit messy.  For each layer you should do a
+// slice_top() layer(); export to svg; then do a slice_bottom()
+// layer(); then export to svg.
+
+//slice_top()
+slice_bottom()
+words_layer();
+//diffuse_layer();
+//holes_layer();
+//led_layer()
--- a/src/Makefile
+++ b/src/Makefile
@ -0,0 +1,8 @@
+SRC = $(wildcard *.py)
+
+put: $(SRC:%.py=put-%.stamp)
+	ampy -p /dev/ttyUSB? ls
+
+put-%.stamp: %.py
+	ampy -p /dev/ttyUSB? put $*.py
+	cp -a $< $@
--- a/src/asynced.py
+++ b/src/asynced.py
@ -0,0 +1,37 @@
+import time
+
+
+def delay(secs: float) -> generator:
+    end = time.monotonic() + secs
+    while time.monotonic() < end:
+        yield None
+
+
+def fps(fps: float) -> generator:
+    yield None
+    dt = 1 / fps
+    until = time.monotonic() + dt
+    while True:
+        remain = until - time.monotonic()
+        if remain > 0:
+            time.sleep(remain)
+        until += dt
+        if remain < -dt:
+            # Catch up a bit
+            until += -remain / 3
+        yield None
+
+
+def wait(stop: int) -> generator:
+    start = time.monotonic()
+    while True:
+        elapsed = int((time.monotonic() - start) * 1000)
+        elapsed = min(stop, elapsed)
+        yield elapsed
+        if elapsed >= stop:
+            break
+
+
+def test():
+    for f in delay(2.0):
+        print(utime.ticks_ms())
--- a/src/iptime.py
+++ b/src/iptime.py
@ -1,25 +1,24 @@
 import random
-
-import ujson
-import utime
 import urllib.urequest

 import asynced
+import ujson
+import time


 def _fetch():
    try:
-        resp = urllib.urequest.urlopen(
-            'http://127.0.0.1:5000/iptime?ip=1.2.3.4')
+        resp = urllib.urequest.urlopen('https://juju.nz/api/iptime/now')
        t = ujson.load(resp)
        resp.close()
        return t
    except OSError as ex:
+        print(ex)
        return None


-def _jitter(mid):
-    return random.randint(mid, mid * 120 / 100)
+def _jitter(mid: int) -> int:
+    return random.randint(mid, mid * 120 // 100)


 def _sync() -> generator:
@ -34,7 +33,7 @@ def _sync() -> generator:

        # Poll slowly until the connection drops.
        while True:
-            yield from asynced.delay(_jitter(5))  #60 * 60))
+            yield from asynced.delay(_jitter(60 * 60))
            got = _fetch()
            if got is None:
                break
@ -48,21 +47,21 @@ def day_sec() -> generator:
        if got is None:
            yield None, None
            continue
-        base_ms = utime.ticks_ms()
+        local = time.monotonic()
        base = got.get('day_sec', None)
        if base is not None:
            break
    good = got

    for got in s:
-        now = base + utime.ticks_diff(utime.ticks_ms(), base_ms) // 1000
+        now = base + time.monotonic() - local
        yield now % (60 * 60 * 24), good

        if got is not None:
            # Update the baseline.
            b2 = got.get('day_sec', None)
            if b2 is not None:
-                base_ms = utime.ticks_ms()
+                local = time.monotonic()
                base = b2
                good = got

@ -70,4 +69,8 @@ def day_sec() -> generator:
 def test():
    for secs, meta in day_sec():
        print(secs)
-        utime.sleep_ms(300)
+        time.sleep(0.3)
+
+
+if __name__ == '__main__':
+    test()
--- a/src/main.py
+++ b/src/main.py
@ -0,0 +1,12 @@
+import time
+
+import wordclock
+
+
+def main():
+    time.sleep(1)
+    wordclock.main()
+
+
+if __name__ == '__main__':
+    main()
--- a/src/misc.py
+++ b/src/misc.py
@ -0,0 +1,11 @@
+def show_stdout(f: Frame):
+    out = '\033\143'
+    stride = 11
+    dots = '.123456789#'
+    for y in range(len(f.pixels) // stride):
+        s = f.pixels[y * stride:(y + 1) * stride]
+        if y & 1 != 0:
+            s.reverse()
+        d = [dots[x * len(dots) // (Frame.Max + 1)] for x in s]
+        out += ''.join(d) + '\n'
+    print(out + '\n')
--- a/src/wordclock.py
+++ b/src/wordclock.py
@ -0,0 +1,223 @@
+import array
+import random
+import time
+
+import asynced
+import iptime
+
+from neopixel_write import neopixel_write
+import board
+import machine
+import neopixel
+
+RANGES = {
+    'dude': 0,
+    'ok': 5,
+    'ten': 8,
+    'seven': 11,
+    'twelve': 16,
+    'even': 22,
+    'eleven': 22,
+    'eight': 28,
+    'four': 33,
+    'five': 37,
+    'two': 41,
+    'three': 44,
+    'six': 49,
+    'one': 52,
+    'past': 55,
+    'run': 60,
+    'nine': 62,
+    'to': 66,
+    'TEN': 69,
+    'HALF': 73,
+    'TWENTY': 77,
+    'TWENTYFIVE': 77,
+    'FIVE': 83,
+    'QUARTER': 90,
+    'A': 98,
+    'AM': 106,
+    'PM': 108,
+    'is': 102,
+    'it': 99,
+    'its': 99,
+}
+
+CIEL8 = (0, 0, 1, 1, 1, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 5, 5, 6, 6, 7, 8, 8, 9,
+         10, 11, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 23, 25, 26, 28,
+         30, 31, 33, 35, 37, 39, 40, 42, 44, 46, 49, 51, 53, 55, 57, 60, 63,
+         66, 68, 71, 74, 77, 80, 83, 86, 90, 93, 96, 100, 103, 107, 111, 115,
+         118, 122, 127, 131, 136, 140, 144, 149, 153, 158, 163, 168, 173, 179,
+         184, 189, 195, 200, 206, 212, 218, 224, 230, 236, 242, 249, 255)
+
+MINUTES = ('oclock', 'FIVE past', 'TEN past', 'QUARTER past', 'TWENTY past',
+           'TWENTYFIVE past', 'HALF past', 'TWENTYFIVE to', 'TWENTY to',
+           'QUARTER to', 'TEN to', 'FIVE to')
+
+HOURS = ('twelve', 'one', 'two', 'three', 'four', 'five', 'six', 'seven',
+         'eight', 'nine', 'ten', 'eleven')
+
+AMPM = ('AM', 'PM')
+
+ITS = ('its', 'it is', 'its dude', 'it is dude', 'its ok', 'it is ok')
+
+COLOUR = (200, 255, 200)
+
+
+def split(secs: int) -> tuple:
+    secs = int(secs)
+    mins = (secs // 60) % 60
+    minute = mins // 5
+    hour = (secs // 3600) % 24
+    if mins >= 35:
+        hour += 1
+    ampm = (hour // 12) % len(AMPM)
+    hour %= len(HOURS)
+    return MINUTES[minute], HOURS[hour], AMPM[ampm]
+
+
+def to_rgb(i, colour) -> tuple:
+    return ((i * colour[0]) >> 8, (i * colour[1]) >> 8, (i * colour[2]) >> 8)
+
+
+class Frame:
+    Max = 255
+    Zeros = tuple([0] * (11 * 10))
+
+    def __init__(self, n: int = 11 * 10, pixels: list = None):
+        if pixels is None:
+            pixels = list(self.Zeros)
+        self.pixels = pixels
+
+    def set(self, idx: int) -> Frame:
+        self.pixels[idx] = self.Max
+        return self
+
+    def __add__(self, other):
+        return Frame(pixels=[
+            min(self.Max, x + y) for x, y in zip(self.pixels, other.pixels)
+        ])
+
+    def muldiv(self, num: int, den: int):
+        return Frame(pixels=[x * num // den for x in self.pixels])
+
+
+@micropython.native
+def merge(f1: Frame, f2: Frame, num1: int, num2: int, den: int) -> Frame:
+    m = Frame.Max
+    p1 = f1.pixels
+    p2 = f2.pixels
+    o = array.array('H', Frame.Zeros)
+    for i in range(len(p1)):
+        k = (p1[i] * num1 + p2[i] * num2) // den
+        if k >= m:
+            k = m
+        o[i] = k
+    return Frame(pixels=o)
+
+
+def render(words: list) -> Frame:
+    f = Frame()
+    for word in words:
+        for w in word.split():
+            idx = RANGES.get(w, None)
+            if idx is not None:
+                for i in range(len(w)):
+                    f.set(idx + i)
+            else:
+                print('warning: %s is missing' % w)
+    return f
+
+
+def prefix() -> tuple:
+    return (ITS[random.randint(0, len(ITS) - 1)], )
+
+
+def show(f: Frame, n):
+    p = f.pixels
+    buf = bytearray(len(p) * 3)
+    r, g, b = COLOUR
+    i = 0
+
+    for c in p:
+        buf[i + 1] = (r * c) >> 8
+        buf[i + 0] = (g * c) >> 8
+        buf[i + 2] = (b * c) >> 8
+        i += 3
+    neopixel_write(n.pin, buf)
+
+
+def scan() -> generator:
+    f = Frame()
+    while True:
+        for i in range(len(f.pixels)):
+            yield f.set(i)
+            f = f.muldiv(80, 100)
+
+
+def intensity(num: int, den: int) -> int:
+    idx = num * len(CIEL8) // den
+    if idx >= len(CIEL8):
+        return 255
+    return CIEL8[idx]
+
+
+def run() -> generator:
+    words = None
+    fade = 2000
+    secs = iptime.day_sec()
+
+    # Flash until time is synced.
+    sc = scan()
+    for s, meta in secs:
+        if s is not None and meta is not None:
+            break
+        yield next(sc)
+
+    src = Frame()
+    while True:
+        yield src
+        s, m2 = next(secs)
+        nxt = split(s)
+        if nxt == words:
+            yield from asynced.delay(1)
+            continue
+        dest = render(prefix() + nxt)
+        for at in asynced.wait(fade):
+            yield merge(src, dest, intensity(fade - at, fade),
+                        intensity(at, fade), 255)
+        words = nxt
+        src = dest
+
+
+def blink() -> generator:
+    led = machine.Pin(16, machine.Pin.OUT)
+    while True:
+        led.off()
+        yield from asynced.delay(0.1)
+        led.on()
+        yield from asynced.delay(0.8)
+
+
+def bench() -> generator:
+    yield None
+    i = 30
+    while True:
+        start = time.monotonic()
+        yield from range(i)
+        elapsed = time.monotonic() - start
+        print('%d in %.3f %.3f/1 %.1f FPS' % (i, elapsed, elapsed / i,
+                                              i / elapsed))
+
+
+def main():
+    num = 11 * 10
+    n = neopixel.NeoPixel(board.GPIO2, num, brightness=1, auto_write=False)
+    routines = (run(), blink(), asynced.fps(30), bench())
+    while True:
+        for r in routines:
+            f = next(r)
+            if f is None:
+                continue
+            elif isinstance(f, Frame):
+                show(f, n)
--- a/srv/iptime.py
+++ b/srv/iptime.py
@ -6,6 +6,7 @@ from geoip import geolite2
 import astral
 import dateutil.tz
 import flask
+import requests

 app = flask.Flask(__name__)

@ -14,11 +15,14 @@ def to_sec(dt):
    return dt.hour * 60 * 60 + dt.minute * 60 + dt.second


-@app.route('/iptime')
-def iptime():
+@app.route('/now')
+def now():
    ip = flask.request.args.get('ip')
    if not ip:
        ip = flask.request.remote_addr
+        if ip.startswith('192.168.') or ip.startswith('10.'):
+            r = requests.get('https://api.ipify.org?format=json')
+            ip = r.json().get('ip')
    loc = geolite2.lookup(ip)
    if loc is None:
        flask.abort(
--- a/srv/iptime.service
+++ b/srv/iptime.service
@ -0,0 +1,15 @@
+[Unit]
+Description=iptime
+After=network.target
+
+[Service]
+Type=simple
+User=juju
+Group=juju
+WorkingDirectory=/home/juju/lib/wordclock/srv
+ExecStart=/usr/bin/uwsgi --umask 0000 -s /tmp/iptime.sock --manage-script-name --plugin python3 --mount /api/iptime=iptime:app
+Restart=on-failure
+
+[Install]
+WantedBy=multi-user.target
+
Author	SHA1	Message	Date
Michael Hope	dc23c25674	Added a license and basic readme.	2019-03-10 20:35:33 +01:00
Michael Hope	b67a78c449	hw: imported the SCAD and rendered layers	2019-03-10 20:35:03 +01:00
Michael Hope	d006b1b220	src: renamed hw to src	2018-12-29 16:55:08 +01:00
Michael Hope	bc307602d7	Added .gitignore	2018-12-29 16:54:53 +01:00
Michael Hope	d38dc08680	worldclock: improve performance, add intensity scaling. Now does ~25 FPS when transitioning. Fades based on intensity instead of PWM level.	2018-12-29 16:28:55 +01:00
Michael Hope	d384b6ef38	wordclock: created v1	2018-12-29 14:24:16 +01:00
Michael Hope	88c6b68995	worldclock: add a blink and benchmark coroutine.	2018-12-10 16:34:22 +01:00
Michael Hope	fda55db245	iptime: switch to the real retry time.	2018-12-10 16:33:52 +01:00
Michael Hope	9e32a22b20	asynced: allow fps() to ignore the first run and to catch up.	2018-12-10 16:33:33 +01:00
Michael Hope	9a77577ae6	wordclock: added a Makefile, main	2018-12-10 15:53:00 +01:00
Michael Hope	65acf8a1c8	wordclock: moved to circuitpython, fixed esp8266 bugs	2018-12-10 15:52:34 +01:00
Michael Hope	93ba0c8f6d	iptime: add a systemd file	2018-12-09 16:08:07 +01:00
Michael Hope	4d62ae2f91	iptime: lookup the external IP address if this comes from inside the network.	2018-12-09 16:07:46 +01:00