RPi Projects/serialJpegCam - Revision history

Andrewmk: fixed external links

2012-07-18T09:12:21Z

fixed external links

Dirkx: /* Wiring things up */

2012-07-16T15:07:41Z

‎Wiring things up

Dirkx: /* Wiring things up */

2012-07-16T14:49:11Z

‎Wiring things up

Dirkx: /* Wiring things up */

2012-07-16T14:48:37Z

‎Wiring things up

Dirkx: /* Wiring things up */

2012-07-16T14:47:12Z

‎Wiring things up

Dirkx: /* Wiring things up */

2012-07-16T14:46:41Z

‎Wiring things up

Dirkx: /* Wiring things up */

2012-07-16T14:46:21Z

‎Wiring things up

Dirkx: /* Wiring things up */

2012-07-16T14:45:34Z

‎Wiring things up

Dirkx: /* Wiring things up */

2012-07-16T14:44:47Z

‎Wiring things up

Dirkx: /* Wiring things up */

2012-07-16T14:44:12Z

‎Wiring things up

@@ Line 1: / Line 1: @@
 = Serial JPEG camera (TTL, µCAM) =
-This project is about attaching the "Serial JPEG µCAM" ([http://www.coolcomponents.co.uk/catalog/camera-module-serial-jpeg-p-369.html|coolcomponents, UK]) to the GPIO pins and take pictures on command.
+This project is about attaching the "Serial JPEG µCAM" ([http://www.coolcomponents.co.uk/catalog/camera-module-serial-jpeg-p-369.html coolcomponents]) to the GPIO pins and take pictures on command.
 <img1>
@@ Line 11: / Line 11: @@
 * A Raspberry PI, any model
 * A µCAM (see above). Ideally one which comes with the connector and wires already pre-soldered. Most do.
-* A 26pin IDC (female) socket that fits onto the GPIO connector of your Pi. ({http://uk.rs-online.com/web/p/headers-pcb-receptacles/6935353/|RS} or any electronics supplier).
+* A 26pin IDC (female) socket that fits onto the GPIO connector of your Pi. ([http://uk.rs-online.com/web/p/headers-pcb-receptacles/6935353/ RS] or any electronics supplier).
 * Some flat pliers or, better a small vice.
 * A recent raspberry linux SD images.
@@ Line 17: / Line 17: @@
 == About the camera ==
-Consult the [http://www.4dsystems.com.au/downloads/micro-CAM/Docs/uCAM-DS-rev4.pdf|datasheet] for full details - but the short of it is that the camera is connected to your Pi by a '3.3v TTL serial connection'.  One talks to the camera using a simple serial command protocol. Such as 'get started', 'measure the light', 'take an image NOW' and ultimately 'give me the image'. The camera (mostly) expects a simple master/slave model. Where the Pi is the master and the camera the slave. The master then gives commands and the slave reacts with things such as 'Ok, done that', 'Error' or 'here is what you asked for'.
+Consult the [http://www.4dsystems.com.au/downloads/micro-CAM/Docs/uCAM-DS-rev4.pdf datasheet] for full details - but the short of it is that the camera is connected to your Pi by a '3.3v TTL serial connection'.  One talks to the camera using a simple serial command protocol. Such as 'get started', 'measure the light', 'take an image NOW' and ultimately 'give me the image'. The camera (mostly) expects a simple master/slave model. Where the Pi is the master and the camera the slave. The master then gives commands and the slave reacts with things such as 'Ok, done that', 'Error' or 'here is what you asked for'.
 == Serial Connections ==
@@ Line 36: / Line 36: @@
 * And, as the camera needs power, we need to wire the 3.3volt wire up to the 3.3volt of the PI.
-We can find the various pins of the GPIO socket in the documentation of the PI. On the {http://elinux.org/Rpi_Low-level_peripherals|detailed} documentation page you will find this image:
+We can find the various pins of the GPIO socket in the documentation of the PI. On the [http://elinux.org/Rpi_Low-level_peripherals detailed] documentation page you will find this image:
 !http://elinux.org/images/2/2a/GPIOs.png!
@@ Line 54: / Line 54: @@
 |}
-Now we do the same for the camera. Page 5 and 6 of the {http://www.coolcomponents.co.uk/catalog/camera-module-serial-jpeg-p-369.html|datasheet} tell you that on the camera the wiring is as follows:
+Now we do the same for the camera. Page 5 and 6 of the [http://www.coolcomponents.co.uk/catalog/camera-module-serial-jpeg-p-369.html datasheet] tell you that on the camera the wiring is as follows:
 {| border=1
@@ Line 84: / Line 84: @@
 <img 3>
-The next step is to wire this up on the IDC connector.  There are some good video's on the web on how to do {http://wiki.makerbot.com/stepstruder-mk6-electronics-assembly|this} or {http://mechatronics.mech.northwestern.edu/stack.htm|that}.
+The next step is to wire this up on the IDC connector.  There are some good video's on the web on how to do [http://wiki.makerbot.com/stepstruder-mk6-electronics-assembly this] or [http://mechatronics.mech.northwestern.edu/stack.htm that].
 The connector comes in 3 parts. We'll start with the connector itself and the bit which clicks straight on top of it - with the 26 grooves and the tiny slots for the metal knifes of the connector. Leave the smooth wire-tensioning loop for now.

← Older revision		Revision as of 15:07, 16 July 2012
Line 81:		Line 81:
	\|1\|\|2\|\|3.3 volt power		\|1\|\|2\|\|3.3 volt power
	\|}		\|}
		+
		+	<img 3>
		+
		+	The next step is to wire this up on the IDC connector. There are some good video's on the web on how to do {http://wiki.makerbot.com/stepstruder-mk6-electronics-assembly\|this} or {http://mechatronics.mech.northwestern.edu/stack.htm\|that}.
		+
		+	The connector comes in 3 parts. We'll start with the connector itself and the bit which clicks straight on top of it - with the 26 grooves and the tiny slots for the metal knifes of the connector. Leave the smooth wire-tensioning loop for now.
		+
		+	The numbering is from the small triangle; the notch or groove at that side is number 1; the next one 2 until you hit 26.
		+
		+	In our case we'll be skipping a few of the holes as shown below in the photograph. So at the far end (where the notch is) we have the first wire (to pin 2 of the camera, the VCC wire). We then skip 4 notches until we are at position 6. There we insert the ground wire (to pin 3 of the camera). We then skip another notch and insert the serial transmit wire from Pi to Camera (pin 5 on the camera, notch 8 on the connector). And we then skip one more notch for the last cable, pin 5 on the camera to notch 10 on the GPI connector.
		+
		+	If you are doing this for the first time - it is a good idea to use a pencil or similar to make a small marking on the strip with the notches at position 1, 6, 8 and 10. And check and double check that you got those at the right place. Counting down from what you think is position 26 on the far end is a good way to do this.
		+
		+	You may want to make a small diagram on a piece of paper with the colours of the wire on it. That helps in the next step.
		+
		+	Once you've marked things - you gently click the small strip with the notches on top of the connector. But do NOT press them together. They should click once - but not more (if you press to hard - they'll click twice and you will have to use a small screwdriver or needed to dis-assemble them). You should now have a small grove between the connector and the top strip.
		+
		+	Gently insert the first wire (pin 2 on the camera, pin 1 on the GPIO connector) in the 1st slot of the GPIO connector; the one all the way to wards the triangle. It should come out on the other side; still in groove 1. If you cannot push it through - loosen the strip a bit. Once inserted you'll find it will stay in place thanks to the small metal knives. Check and double check it is exactly in the first grove (and not in the second one or diagonal).
		+
		+	Continue doing this for the other 3 wires. The end result should look like
		+
		+	<img 5>
		+
		+	Once done - check things a final time and squeeze the two halves together 'hand tight'. You will probably find that the thing does not properly snap together. This is good - as this gives you the all important chance to check it one final time. If things are wrong - gently pry the connector loose and try again. If the wire is damaged; cut the wire(s) and try again.
		+
		+	If things are right - then use a small vice or some pliers to really 'click' the connector together. Once that is done - loop the cable back and put the tension-relief bar over top. This will generally also lock the strips in place.
		+
		+	If you have a multi-meter - you can now check your wires; simply insert a thin wire or needed into pin 1, 6, 8 and 10 and check where they connect to. It is easy to get pin 1 and 2 confused; so keep checking where the triangle is. Consider putting a bit of red inkt on it.
		+
		+	The final assembly should look like
		+
		+	<img 6>
		+
		+	== Connecting it to the PI
		+
		+	Next up - ensure the pi is unplugged and insert the connector. Make sure your pin one (the triangle) is next to the P1 and notch marking near the edge of the board.
		+
		+	If you have a multi-meter you can check your wiring a final time.
		+
		+	== Software
		+
		+	Download the zip file from

@@ Line 65: / Line 65: @@
 |3||GND - 0 volt, or common ground
 |-
-|2|"3.3 volt power
+|2||3.3 volt power
 |}
@@ Line 71: / Line 71: @@
 {| border=1
-|PI||Camera||function
+|PI || Camera || function
 |-
-|8|"5||Pi to Camera
+|8||5||Pi to Camera
 |-
 |10||4||Camera to PI

@@ Line 42: / Line 42: @@
 and what we now need to find are the 4 pins:
-{|
+{| border=1
-|pin||function
+!pin||function
 |-
 |8||Tx - serial transmission to the camera
@@ Line 56: / Line 56: @@
 Now we do the same for the camera. Page 5 and 6 of the {http://www.coolcomponents.co.uk/catalog/camera-module-serial-jpeg-p-369.html|datasheet} tell you that on the camera the wiring is as follows:
-{|
+{| border=1
-|pin| function
+!pin| function
 |-
-|5|Rx - serial information inbound from the PI
+|5||Rx - serial information inbound from the PI
 |-
-|4|Tx - serial transmission outbound back to the  Pi
+|4||Tx - serial transmission outbound back to the  Pi
 |-
-|3|GND - 0 volt, or common ground
+|3||GND - 0 volt, or common ground
 |-
-|2|3.3 volt power
+|2|"3.3 volt power
 |}
 So combing this we get the wiring diagram.
-{|
+{| border=1
-|PI|Camera|function
+|PI||Camera||function
 |-
-|8|5|Pi to Camera
+|8|"5||Pi to Camera
 |-
-|10|4|Camera to PI
+|10||4||Camera to PI
 |-
-|6|3|GND - 0 volt, or common ground
+|6||3||GND - 0 volt, or common ground
 |-
-|1|2|3.3 volt power
+|1||2||3.3 volt power
 |}

← Older revision		Revision as of 14:47, 16 July 2012
Line 52:		Line 52:
	\|-		\|-
	\|1\|\|3.3 volt power		\|1\|\|3.3 volt power
−	\|-	+	\|}
−	}	+

	Now we do the same for the camera. Page 5 and 6 of the {http://www.coolcomponents.co.uk/catalog/camera-module-serial-jpeg-p-369.html\|datasheet} tell you that on the camera the wiring is as follows:		Now we do the same for the camera. Page 5 and 6 of the {http://www.coolcomponents.co.uk/catalog/camera-module-serial-jpeg-p-369.html\|datasheet} tell you that on the camera the wiring is as follows:
Line 67:		Line 66:
	\|-		\|-
	\|2\|3.3 volt power		\|2\|3.3 volt power
−	\|-	+	\|}
−	}	+

	So combing this we get the wiring diagram.		So combing this we get the wiring diagram.
Line 82:		Line 80:
	\|-		\|-
	\|1\|2\|3.3 volt power		\|1\|2\|3.3 volt power
−	\|-	+	\|}
−	}	+

@@ Line 45: / Line 45: @@
 |pin| function
 |-
-|8|Tx - serial transmission to the camera
+|8||Tx - serial transmission to the camera
 |-
-|10|Rx - serial information from camera to PI
+|10||Rx - serial information from camera to PI
 |-
-|6|GND - 0 volt, or common ground
+|6||GND - 0 volt, or common ground
-|-
-|1|3.3 volt power
 |-
+}

@@ Line 42: / Line 42: @@
 and what we now need to find are the 4 pins:
 {|pin| function|
 |pin| function|
 |8|Tx - serial transmission to the camera|
 |10|Rx - serial information from camera to PI|