LED Flower - Versionsgeschichte

Marvin: We have been covered again, but there are no more kits.

2012-12-02T10:02:58Z

We have been covered again, but there are no more kits.

← Nächstältere Version		Version vom 2. Dezember 2012, 10:02 Uhr
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	LED Flowers are a set of PWM-controlled RGB LEDs which get their settings via USB using [http://www.obdev.at/products/vusb/index.html obdev.at's USB stack]. Everything needed for this workshop is under a free license, so feel free to copy and modify.		LED Flowers are a set of PWM-controlled RGB LEDs which get their settings via USB using [http://www.obdev.at/products/vusb/index.html obdev.at's USB stack]. Everything needed for this workshop is under a free license, so feel free to copy and modify.

	To get started, you first need all the parts and a PCB. You can manufacture your PCB from the board data in the git repository (see [[LED Flower#Sources\|Sources]]). The parts are listed in the [[LED Flower#BOM\|Bill of Materials]] section including an order number from two german component sellers. Alternatively, you can just contact [[Benutzer:Marvin\|Marvin]] and ask him to send you a complete kit as there are some leftovers from the last workshop. If you ask nicely, he might solder the most complicated parts for you and even pre-program the microcontroller. Once you have obtained everything, go ahead and read the [[#Tutorial\|Tutorial]]. Also you may want to get inspired by all the other LED Flowers that have been created: [[LED Flowers]].		To get started, you first need all the parts and a PCB. You can manufacture your PCB from the board data in the git repository (see [[LED Flower#Sources\|Sources]]). The parts are listed in the [[LED Flower#BOM\|Bill of Materials]] section including an order number from two german component sellers. Once you have obtained everything, go ahead and read the [[#Tutorial\|Tutorial]]. Also you may want to get inspired by all the other LED Flowers that have been created: [[LED Flowers]].

	==Sources==		==Sources==

Alex am 24. November 2012 um 21:13 Uhr

2012-11-24T21:13:48Z

← Nächstältere Version		Version vom 24. November 2012, 21:13 Uhr
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	However, both issues can be ignored, as long as you do not need calibrated colors and on every RGB LED there is one LED that is at brightness level 15 or higher.		However, both issues can be ignored, as long as you do not need calibrated colors and on every RGB LED there is one LED that is at brightness level 15 or higher.



			<gallery widths=300px heights=200px perrow=3 >
			Datei:AlexN900 01 20111221 009.jpg
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Marvin: /* Known Issues */

2012-01-16T11:44:51Z

Known Issues

← Nächstältere Version		Version vom 16. Januar 2012, 11:44 Uhr
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	==Known Issues==		==Known Issues==
	~~As many other things, this~~ project ist far from perfect:		This project ist far from perfect:
	* We do not yet implement correct LED fading. For correct human perception of the different brightness levels we would have to implement a logarithmic scale. There are some trials to do so using a 16-bit PWM instead of 8 bits in the git history, however, they all brought up different more severe issues.		* We do not yet implement correct LED fading. For correct human perception of the different brightness levels we would have to implement a logarithmic scale. There are some trials to do so using a 16-bit PWM instead of 8 bits in the git history, however, they all brought up different more severe issues.
	* Sometimes some PWM actions are deferred due to the time-critical in-software USB operation. This leads to perceivable flickering of the LEDs when they are at a low brightness level. This also complicates the issue above as this makes it a bit harder to implement a correction on the host side.		* Sometimes some PWM actions are deferred due to the time-critical in-software USB operation. This leads to perceivable flickering of the LEDs when they are at a low brightness level. This also complicates the issue above as this makes it a bit harder to implement a correction on the host side.

	However, both issues can be ignored, as long as you do not need calibrated colors and on every RGB LED there is one LED that is at brightness level 15 or higher.		However, both issues can be ignored, as long as you do not need calibrated colors and on every RGB LED there is one LED that is at brightness level 15 or higher.

Hefee: Englische Kategorie eingeführt

2011-11-11T13:20:36Z

Englische Kategorie eingeführt

← Nächstältere Version		Version vom 11. November 2011, 13:20 Uhr
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	[[Category:Projekte]][[Category:Bausaetze]]		[[Category:Projekte]][[Category:Bausaetze]][[Category:en]]

	[[Datei:lf-0500-01.jpeg\|thumb]]		[[Datei:lf-0500-01.jpeg\|thumb]]

Hefee: Kategorie:Bausaetze hinzugefügt

2011-11-10T16:32:57Z

Kategorie:Bausaetze hinzugefügt

← Nächstältere Version		Version vom 10. November 2011, 16:32 Uhr
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	[[Category:Projekte]]		[[Category:Projekte]][[Category:Bausaetze]]

	[[Datei:lf-0500-01.jpeg\|thumb]]		[[Datei:lf-0500-01.jpeg\|thumb]]

Marvin: /* Sources */ The reasons are actually well-known. ;)

2011-08-21T11:36:47Z

Sources: The reasons are actually well-known. ;)

@@ Zeile 9: / Zeile 9: @@
 ==Sources==
-WARNING: The Links are not up to date. An update will follow the days.
+Sources are available here:
   http://www.0x53a.de/files/led-flower.tar.gz

Sdx23: /* Sources */

2011-08-20T18:25:49Z

Sources

← Nächstältere Version		Version vom 20. August 2011, 18:25 Uhr
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	To build the firmware, you will need an [[AVR Toolchain]] and avrdude. To build the host software, you will need gtk+-2, libusb-1.0 and lua.		To build the firmware, you will need an [[AVR Toolchain]] and avrdude. To build the host software, you will need gtk+-2, libusb-1.0 and lua.

			Alternatively you can access the sources via http, as for some strange reason the git doesn't work meanwhile:
			http://www.0x53a.de/files/led-flower.tar.gz

	==Circuit Diagram==		==Circuit Diagram==

Cyela4t: /* Sources */

2011-08-12T12:56:30Z

Sources

← Nächstältere Version		Version vom 12. August 2011, 12:56 Uhr
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	==Sources==		==Sources==
			WARNING: The Links are not up to date. An update will follow the days.

	Sources are available in a git repository. Just:		Sources are available in a git repository. Just:
	git clone https://cage.0x53a.de/ledflower		git clone https://cage.0x53a.de/ledflower

Cyela4t: /* Prerequisites */

2011-08-12T12:36:06Z

Prerequisites

← Nächstältere Version		Version vom 12. August 2011, 12:36 Uhr
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	===Prerequisites===		===Prerequisites===
	I highly recommend checking out the git repository with the current sources for the firmware and control programs. If you are building this in a workshop, you probably won't need it as your tutor may provide the initial firmware. However, the control programs are the one thing that make this project interesting. See [[LED Flower#Sources]].		I highly recommend checking out the git repository with the current sources for the firmware and control programs. If you are building this in a workshop, you probably won't need it as your tutor may provide the initial firmware. However, the control programs are the one thing that make this project interesting. See [[LED Flower#Sources]].

			Clean the board with aceton before soldering.

	===Part I: The PCB===		===Part I: The PCB===

Marvin: /* USB Port */

2011-08-01T20:42:58Z

USB Port

← Nächstältere Version		Version vom 1. August 2011, 20:42 Uhr
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	====USB Port====		====USB Port====
	Solder R2, R3 (both 68 Ω), R4 (2.7 kΩ), D2, D3 (both 3.6 V Zener Diodes) and the USB connector as shown below.		Solder R3, R4 (both 68 Ω), R2 (2.7 kΩ), D2, D3 (both 3.6 V Zener Diodes) and the USB connector as shown below.
	<gallery widths=200px heights=200px perrow=3>		<gallery widths=200px heights=200px perrow=3>
	Datei:Lf-0090-00.jpeg		Datei:Lf-0090-00.jpeg