A Fridge Magnet - Cronologia

MediaWiki default il 13:31, 8 giu 2013

2013-06-08T13:31:02Z

2013-05-16T14:37:16Z

Software

2013-05-16T14:36:38Z

Software

2013-05-16T14:35:15Z

2013-05-16T14:16:17Z

Software

2013-05-16T13:22:40Z

Firmware

2013-05-16T13:22:04Z

2013-05-16T12:22:09Z

2013-05-16T12:21:44Z

2013-05-16T12:06:51Z

@@ Riga 102: / Riga 102: @@
 (as a slightly cheaper alternative it is possible to use a JeeNode and a USB-BuB instead of the JeeLink).
-* step 3: Plug the JeeLink. It will appear as a USB serial terminal (/dev/ttyUSB0 or some ttyUSBx if there are other serial USB devices already
+* step 3: Plug the JeeLink. It will appear as a USB serial terminal (/dev/ttyUSB0 or some ttyUSBx if there are other serial USB devices already connected).
 * step 4: Try to send a text:

@@ Riga 99: / Riga 99: @@
 This demo program is able to display text messages (using 5x7 fonts, 22 lines/44 chars per line) or an xbm (x bitmap) file (264x176 pixels).
-To test the demo you need either a JeeLink running the JeeLabs RF12demo firmware.
+To test the demo you need a JeeLink running the JeeLabs RF12demo firmware.
 (as a slightly cheaper alternative it is possible to use a JeeNode and a USB-BuB instead of the JeeLink).

@@ Riga 12: / Riga 12: @@
 * It is possible to connect up to 212*31=6572 displays to the same transmitter and update them independently (several displays sharing the same address will show the same contents).
 * Using an optimized version of the code (currently under development) the circuit can work for monthes on a single battery. The display is bi-stable so it can turned off, the entire circuit can be put in sleep mode for the most part of the time.
 Here is a picture of the prototype to whet your appetite:

@@ Riga 91: / Riga 91: @@
 === Software ===
-I have developed a demo program able to display text messages and images on the remote display.
+I have developed a demo program able to display text messages and images on the remote display. The program runs on a GNU-Linux Box.
-Step 1: download the [[fridge.c]] source code. Change the DISPLAYNODE constant to match the node number of your display if needed.
+* Step 1: download the [[fridge.c]] source code. Change the DISPLAYNODE constant to match the node number of your display if needed.
-Step 2: compile it:
+* Step 2: compile it:
    gcc -o fridge fridge.c
-This demo program is able to display text messages (using 5x7 fonts,
+This demo program is able to display text messages (using 5x7 fonts, 22 lines/44 chars per line) or an xbm (x bitmap) file (264x176 pixels).
-   gcc -o fridge fridge.c
+To test the demo you need either a JeeLink running the JeeLabs RF12demo firmware.

@@ Riga 79: / Riga 79: @@
 === Firmware ===
-Step 1: Download the [http://www.embeddedartists.com/sites/default/files/support/displays/epaper/epaper_arduino_130412.zip demo code] from embedded artists (Apache License).
+* Step 1: Download the [http://www.embeddedartists.com/sites/default/files/support/displays/epaper/epaper_arduino_130412.zip demo code] from embedded artists (Apache License).
-Step 2: Be sure you have loaded the JeeNode Libraries as explained [http://jeelabs.org/2013/02/03/dijn-02-the-arduino-ide/ here].
+* Step 2: Be sure you have loaded the JeeNode Libraries as explained [http://jeelabs.org/2013/02/03/dijn-02-the-arduino-ide/ here].
-Step 3: Use [[epaperradioram.ino]] instead of the epaper.ino source code.
+* Step 3: Use [[epaperradioram.ino]] instead of the epaper.ino source code.
 The last line of setup() is:
    rf12_initialize(1, RF12_868MHZ, 100);
 where 1 is the node number and 100 is the group number. Change these constants if you want to support several fridge magnets.
-Step 4: Upload the firmware on the JeeNode as described [http://jeelabs.org/2013/02/04/dijn-03-store-code-in-a-jeenode/ here]
+* Step 4: Upload the firmware on the JeeNode as described [http://jeelabs.org/2013/02/04/dijn-03-store-code-in-a-jeenode/ here]
 Now if you power up your JeeNode the Display will be cleared waiting for the first image to be received.

@@ Riga 10: / Riga 10: @@
 Features:
-* It is possible to connect up to 31 displays to one same transmitter and update them independently (several displays sharing the same address will show the same contents).
+* It is possible to connect up to 212*31=6572 displays to the same transmitter and update them independently (several displays sharing the same address will show the same contents).
 * Using an optimized version of the code (currently under development) the circuit can work for monthes on a single battery. The display is bi-stable so it can turned off, the entire circuit can be put in sleep mode for the most part of the time.
 Here is a picture of the prototype to whet your appetite:
-−
 [[File:fridge1.jpg|300px]]
@@ Riga 76: / Riga 76: @@
            VCC        +3V(pin 4 any P port)  +3.3V             +3.3V
 </pre>

@@ Riga 8: / Riga 8: @@
 show important or interesting information for the family, but can be used as
 a price/special offer label on the front side of shop shelves.
 Here is a picture of the prototype to whet your appetite:

@@ Riga 48: / Riga 48: @@
            MOSI       MOSI(pin 4 SPI/ISP)     MOSI/PB3 pin 17  11
            MISO       MISO(pin 1 SPI/ISP)     MISO/PB4 pin 18  12
-           SSEL                               PB0 pin 14       8
+           SSEL       SEL0(pin 7 SPI/ISP)     PB0 pin 14       8
-           Busy                               PD7 pin 13       7
+           Busy       DIO4(pin 2 port 4)      PD7 pin 13       7
-           BorderCtl                          PD3 pin 5        3
+           BorderCtl  IRQ (pin 6 any P port)  PD3 pin 5        3
-           SCL        SCL(pin 5 PWR/SEL/I2C)  SCL/PC5 pin 28   A6
+           SCL        SCL(pin 5 PWR/SEL/I2C)  SCL/PC5 pin 28   A6 (19)
-          SDA        SDA(pin 4 PWR/SEL/I2C)  SDA/PC4 pin 27   A5
+          SDA        SDA(pin 4 PWR/SEL/I2C)  SDA/PC4 pin 27   A5 (18)
-          PWM
+          PWM        DIO2(pin 2 port 2)      PD5 pin 11       5