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projekte:epson-stylus-sx100 [2016-06-15 00:37] cracki [Contact Image Sensor] |
projekte:epson-stylus-sx100 [2017-01-17 02:01] |
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| - | ====== epson-stylus-sx100 ====== | ||
| - | |||
| - | Bernd hat einen Epson Stylus SX 100 gedroppt. | ||
| - | |||
| - | Das Multifunktionsgeraet wurde zerlegt. Die Hauptplatine hat sich dematerialisiert. | ||
| - | |||
| - | Uebrig sind: | ||
| - | |||
| - | * Contact Image Sensor mit LEDs | ||
| - | * Schrittmotor (96 Schritte, 18 Ohm, ~0.2-0.3 Ampere) | ||
| - | * zwei DC Motoren, vmtl brushed | ||
| - | * gammelige Zahnriemen | ||
| - | * zwei optische Encoder, eine Encoderscheibe, ein Encoderstreifen (hat Cracki eingesackt) | ||
| - | |||
| - | ===== Contact Image Sensor ===== | ||
| - | |||
| - | Beschriftungen: FC11B913F56 F KTH0351-2 | ||
| - | |||
| - | Numerierung: | ||
| - | * Rohm: Pin 1 aussen. | ||
| - | * PCB: Pin 1 innen <- die nehmen wir | ||
| - | |||
| - | ==== Beleuchtung ==== | ||
| - | |||
| - | Die LEDs brauchen so 2-3 Volt, Strom ~20 mA bringt schon Licht. | ||
| - | |||
| - | die TO Pins am PCB sind: V+, Blau, Rot, Gruen. | ||
| - | |||
| - | Bei 5V Versorgung sollte mit folgenden Widerständen nach Erde gezogen werden fuer weisses Papier: Rot:50, Grün:50, Blau:220. | ||
| - | |||
| - | <pagebreak> | ||
| - | Spannung 1 mA: | ||
| - | ^ + \ - ^ 1 ^ 2 ^ 3 ^ 4 ^ 5 ^ Beschreibung des Pins ^ | ||
| - | | 1 | x | | | | | N/C (so weit sich erkennen laesst) | | ||
| - | | 2 | | x | | | | LED GND Rot | | ||
| - | | 3 | | | x | | | LED GND Gruen | | ||
| - | | 4 | | | | x | | LED GND Blau | | ||
| - | | 5 | | R | G | B | x | LED + | | ||
| - | |||
| - | ==== Datensignale ==== | ||
| - | |||
| - | Spannung 1 mA: | ||
| - | ^ + \ - ^ 6 ^ 7 ^ 8 ^ 9 ^ 10 ^ 11 ^ 12 ^ Vias ^ Geometrie ^ relativ ^ Vermutung ^ Beschreibung des Pins ^ | ||
| - | | 6 | x | <typo bg:#ffe0b2>0.61</typo> | <typo bg:#bdb2ff>1.85</typo> | <typo bg:#b2f1ff>1.51</typo> | <typo bg:#bdb2ff>1.85</typo> | <typo bg:#bdb2ff>1.85</typo> | <typo bg:#bdb2ff>1.85</typo> | 1 | dünn | | Startpuls | zwischen oberer Flaeche und Schrauben | | ||
| - | | 7 | <typo bg:#b2ffcc>1.22</typo> | x | <typo bg:#b2ffe6>1.34</typo> | <typo bg:#caffb2>0.99</typo> | <typo bg:#b2ffe6>1.34</typo> | <typo bg:#b2ffe6>1.34</typo> | <typo bg:#b2ffe4>1.33</typo> | 2 | breit | oben | 3V3 | | | ||
| - | | 8 | <typo bg:#bdb2ff>1.85</typo> | <typo bg:#ffe0b2>0.61</typo> | x | <typo bg:#b2f1ff>1.51</typo> | <typo bg:#bdb2ff>1.85</typo> | <typo bg:#bdb2ff>1.85</typo> | <typo bg:#b6b2ff>1.82</typo> | 1 | dünn | | Clock | von unten hochstechend | | ||
| - | | 9 | <typo bg:#ffb4b2>0.41</typo> | <typo bg:#ffb2bd>0.35</typo> | <typo bg:#ffb4b2>0.41</typo> | x | <typo bg:#ffb4b2>0.41</typo> | <typo bg:#ffb4b2>0.41</typo> | <typo bg:#ffb2b2>0.40</typo> | 3-5 | breitestes | unten | GND | ueber #8 | | ||
| - | | 10 | <typo bg:#bbb2ff>1.84</typo> | <typo bg:#ffe0b2>0.61</typo> | <typo bg:#bbb2ff>1.84</typo> | <typo bg:#b2f4ff>1.50</typo> | x | <typo bg:#bbb2ff>1.84</typo> | <typo bg:#b9b2ff>1.83</typo> | 1 | breit | mitte | Vref | driftet langsam, wenn Versorgung angeklemmt (andere pins sind nah an GND) | | ||
| - | | 11 | <typo bg:#bdb2ff>1.85</typo> | <typo bg:#ffe0b2>0.61</typo> | <typo bg:#bdb2ff>1.85</typo> | <typo bg:#b2f1ff>1.51</typo> | <typo bg:#bdb2ff>1.85</typo> | x | <typo bg:#bdb2ff>1.85</typo> | 1 | dünn | | 300/600 dpi | unter der Mittleren Flaeche, ueber #12 | | ||
| - | | 12 | <typo bg:#bbb2ff>1.84</typo> | <typo bg:#ffe0b2>0.61</typo> | <typo bg:#bbb2ff>1.84</typo> | <typo bg:#b2f4ff>1.50</typo> | <typo bg:#b9b2ff>1.83</typo> | <typo bg:#bbb2ff>1.84</typo> | x | 1 | dünn | | Aout | ueber der unteren Flaeche, unter #11 | | ||
| - | |||
| - | ==== Insgesamt ==== | ||
| - | |||
| - | sieht verdammt nach [[http://rohmfs.rohm.com/en/products/databook/datasheet/module/contact_image_sensor/flatbed/lsh3008-ca10a.pdf]] aus | ||
| - | |||
| - | * 6 Startpuls | ||
| - | * 8 Clock | ||
| - | * 10 Vref (sollte auf GND fest) | ||
| - | * wenns hoeher ist, gibts kein gescheites bild mehr | ||
| - | * 11 DPI Mode | ||
| - | * macht auf jeden Fall, wieviele Clocks man pro Zeile rausholen kann | ||
| - | * 0/L: 300 dpi ~2600 clocks | ||
| - | * 1/H: 600 dpi ~5268 clocks | ||
| - | * nach anderen datenblaettern hat man 82 clocks "output period", dann kommen die pixel (inkl. vorne und hinten dummypixeln) | ||
| - | * 600 dpi: 5184 pixels | ||
| - | * 300 dpi: 2592 pixels | ||
| - | * 12 Analog Out | ||
| - | * bei steigender Clock gehts scheinbar los (kommt von GND hoch fuer jeden Pixel neu, gefuehlte 100ns hier) | ||
| - | * bei fallender Clock sampeln klingt sinnvoll | ||
| - | |||
| - | ==== Operation ==== | ||
| - | |||
| - | Startpuls wird bei fallender Clock gesampelt. Wenn Startpuls, dann werden die Werte in den Ausgabepuffer geschickt. Dann mit Clock rauscyceln. Belichtungszeit haengt wohl vom Intervall zwischen Startpulsen ab. | ||
| - | |||
| - | Was ich mache (funktioniert, kann man bestimmt noch reduzieren): | ||
| - | |||
| - | * Werte -> Shiftregister, neue Belichtung starten: | ||
| - | * Puls hoch | ||
| - | * Clock hoch | ||
| - | * warte 500us | ||
| - | * Clock runter | ||
| - | * warte 500us | ||
| - | * Puls runter | ||
| - | * Shiftregister rausholen: | ||
| - | * Clock rauf (Signal geht los) | ||
| - | * warte 1us | ||
| - | * Clock runter (Signal sollte stabil sein, kann man sampeln) | ||
| - | * warte 1us | ||
| - | * so oft wie es pixel gibt | ||
| - | * restliche Belichtungszeit geben | ||
| - | * warte, 0-20 Millisekunden haben geklappt | ||
| - | |||
| - | ==== Arduino ==== | ||
| - | |||
| - | <code> | ||
| - | #define START 2 | ||
| - | #define CLOCK 3 | ||
| - | #define DPIMODE 4 | ||
| - | |||
| - | bool dpimode = 1; | ||
| - | uint16_t pixels = dpimode ? 5184 : 2592; | ||
| - | |||
| - | uint32_t linetime = 20000; // us | ||
| - | uint32_t sched = 0; | ||
| - | |||
| - | void setup() { | ||
| - | pinMode(START, OUTPUT); | ||
| - | pinMode(CLOCK, OUTPUT); | ||
| - | pinMode(DPIMODE, OUTPUT); | ||
| - | |||
| - | digitalWrite(DPIMODE, dpimode); | ||
| - | |||
| - | sched = micros(); | ||
| - | } | ||
| - | |||
| - | void loop() { | ||
| - | digitalWrite(START, HIGH); | ||
| - | digitalWrite(CLOCK, HIGH); | ||
| - | digitalWrite(CLOCK, LOW); | ||
| - | digitalWrite(START, LOW); | ||
| - | |||
| - | for (uint16_t counter = 0; counter < 82 + pixels; counter += 1) | ||
| - | { | ||
| - | PORTD |= _BV(PORTD3); | ||
| - | //delayMicroseconds(1); | ||
| - | PORTD &= ~_BV(PORTD3); | ||
| - | //delayMicroseconds(1); | ||
| - | } | ||
| - | |||
| - | sched += linetime; | ||
| - | int32_t dt = sched - micros(); | ||
| - | while (dt > 0x4000) | ||
| - | { | ||
| - | delayMicroseconds(0x4000); | ||
| - | dt -= 0x4000; | ||
| - | } | ||
| - | if (dt > 0) | ||
| - | delayMicroseconds(dt); | ||
| - | } | ||
| - | </code> | ||
| - | ==== coloring code ==== | ||
| - | <code> | ||
| - | import re, colorsys | ||
| - | |||
| - | rex = re.compile('(?:<span[^>]*>)?([0-9].[0-9]{2})(?:</span>)?') | ||
| - | |||
| - | def color(value, min, max): | ||
| - | value = (value - min) / (max - min) | ||
| - | (r,g,b) = [int(v*255) for v in colorsys.hls_to_rgb(value, 0.85, 1.0)] | ||
| - | return "#{:02x}{:02x}{:02x}".format(r,g,b) | ||
| - | |||
| - | def colorize(match): | ||
| - | value = match.group(1) | ||
| - | return '<typo bg:{1}>{0}</typo>'.format(value, color(float(value), 0.4, 2.5)) | ||
| - | |||
| - | source = open("foo.txt").read() | ||
| - | open("foo.txt", "w").write(rex.sub(colorize, source)) | ||
| - | </code> | ||
| - | |||
| - | ==== Bilder ==== | ||
| - | |||
| - | {{projekte:sx100:img_20160604_004626.jpg?500|}} | ||
| - | |||
| - | {{projekte:sx100:img_20160604_004801.jpg?500|}} | ||
| - | |||
| - | {{projekte:sx100:img_20160604_004821.jpg?500|}} | ||
| - | |||
