16 LEDs - Revision history

Cartridge1987: /* testing */

2015-11-11T10:59:37Z

testing

2015-11-02T11:46:23Z

2013-04-25T14:34:37Z

Future hardware enhancements

2013-04-25T14:31:58Z

Possible Configurations

2013-04-25T14:23:38Z

Overview

2013-04-25T07:51:54Z

Jumper settings

2013-04-24T16:03:40Z

Pinout

2013-04-24T16:03:16Z

Jumper settings

2013-04-24T16:02:45Z

Pinout

2013-04-24T16:00:25Z

Overview

@@ Line 16: / Line 16: @@
 Most people will want the common-cathode version. This connects all the cathodes to GND (pin 1/2) and then all the inputs to the leds. This results in normal logic: the leds light up if the signal is high.
-=== testing ===
+=== Testing ===
 To test the 16LED, connect the GND (pin 1 or 2) to any of the GND pins on your board.

@@ Line 1: / Line 1: @@
 [[File:16-LEDs.jpg|thumb|300px|alt=The 16_LEDs PCB|The 16_LEDs PCB]]
-This is the documentation page for the 16-LEDs board.
+This is the documentation page for the 16-LEDs board. That you can buy in the [http://www.bitwizard.nl/shop/expansion-boards/dio-leds BitWizard shop].
 == Overview ==

@@ Line 63: / Line 63: @@
 == Future hardware enhancements ==
+The jumper is not much use: If you have the common cathode version the jumper must connect the common rail to GND, and if you have the common anode version, you must connect it to VCC. Therefore it makes more sense to make this a solder-jumper. It makes sense to design the board to have the GND signal the default because most people will want the normal-logic version i.e. the common cathode.
 == Changelog ==

@@ Line 11: / Line 11: @@
 === Possible Configurations ===
-To test the 16LED, connect the device to any of the GND and power pins on the boards.<br>
+The 16-leds board can be ordered in two versions. The common-anode version will connect all the anodes to VCC (pin 19,20) and the leds via a resistor to the 16 inputs (pin 3-18). This means that the led will light up if you drive the input pin (3-19) LOW. This is useful for open collector outputs. However usually this results in inverted logic: the led lights when the signal is low.
-For example if you have a combination of the DIO and the 16LED (common GND), connect DIO-PIN1 to 16LED-PIN1 and DIO-PIN2 to 16LED-<b>PIN3</b> to light LED0 as DIO-PIN2 is VCC (5V).
+Most people will want the common-cathode version. This connects all the cathodes to GND (pin 1/2) and then all the inputs to the leds. This results in normal logic: the leds light up if the signal is high.
+=== testing ===
+To test the 16LED, connect the GND (pin 1 or 2) to any of the GND pins on your board.
+Next take a 5V (or 3.3V) wire (pin 2 on DIO) and connect it one at a time to pin 3, 4, and so on. You can use a power supply pin or a pin programmed to "high". Each time you touch one of the inputs, one of the leds should light up.
 == External resources ==

@@ Line 5: / Line 5: @@
 == Overview ==
 A very useful board to test your digital outputs. Works on 5V as well as 3.3V so for the DIO as well as the Pi GPIO pins.<br>
-Must have! Use the 10x1Pin F-F kabel to hook it up to the boards.
+Must have! Use the 10x1Pin F-F kabel to hook it up to the boards (e.g. i2c_dio or spi_dio). Or if your board has a 10x2 pin header, you can use a 20pin IDC cable.
 == Assembly instructions ==

@@ Line 49: / Line 49: @@
 <b>Common Ground/Common VCC</b> is hard wired in JP1.
 <table>
-<tr><td> 1=2&nbsp;&nbsp;3</td><td>Common GND</td></tr>
+<tr><td> 1=2&nbsp;&nbsp;3</td><td>Common GND / kathode</td></tr>
-<tr><td> 1&nbsp;&nbsp;2=3 </td><td>Common VCC</td></tr>
+<tr><td> 1&nbsp;&nbsp;2=3 </td><td>Common VCC / anode</td></tr>
 </table>

@@ Line 44: / Line 44: @@
 | 19 || 20 || VCC || VCC
 |}
+== Jumper settings ==
 <b>Common Ground/Common VCC</b> is hard wired in JP1.

@@ Line 26: / Line 26: @@
 | 1 || 2 || GND || GND
 |-
-| 3 || 4 || LED1 || LED2
+| 3 || 4 || LED0 || LED1
 |-
-| 5 || 6 || LED3 || LED4
+| 5 || 6 || LED2 || LED3
 |-
-| 7 || 8 || LED5 || LED6
+| 7 || 8 || LED4 || LED5
 |-
-| 9 || 10 || LED7 || LED8
+| 9 || 10 || LED6 || LED7
 |-
-| 11 || 12 || LED9 || LED10
+| 11 || 12 || LED8 || LED9
 |-
-| 13 || 14 || LED11 || LED12
+| 13 || 14 || LED10 || LED11
 |-
-| 15 || 16 || LED13 || LED14
+| 15 || 16 || LED12 || LED13
 |-
-| 17 || 18 || LED15 || LED16
+| 17 || 18 || LED14 || LED15
 |-
 | 19 || 20 || VCC || VCC