Differences

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--- composants:rpi_card [2020/11/06 16:10] – [Activating SSH] mh
+++ composants:rpi_card [2021/05/23 19:47] – [Raspberry Pi] mh
@@ Line 1: / Line 1: @@
 ====== Raspberry Pi ======
-===== General Infos =====
+=== Default login ===
-==== Default login ====
   ***User :** pi
   ***Pass :** raspberry
+At first boot on a fresh flash it is good practice to immediately run updates and configure a few options using raspi-config before proceeding to any more tuning.
-==== Activating SSH ====
+===== SSH =====
 <code bash>
@@ Line 18: / Line 17: @@
 It is good practice to have your router assign a static IP address to a RPi if you want to regularly connect to it via ''ssh''
-==== Running scripts at startup ====
+===== Camera =====
+[[https://wiki.mchobby.be/index.php?title=Pi-HQ-CAM-LENS|External wiki information on different cameras]]
+==== Activating the camera ====
+<code bash>
+$ sudo raspi-config
+</code>
+Go to ''Interface Options'' then ''Camera'' and activate it. Raspi-config will propose a reboot which should be accepted.
+==== Python script to take pictures ====
+Navigate to a folder where you want the script to be located.
+<code bash>
+$ touch camera.py
+</code>
+Edit this file and copy the following :
+<code python>
+#!/usr/bin/env python
+from picamera import PiCamera
+from time import sleep
+camera = PiCamera()
+camera.start_preview()
+sleep(5)
+camera.capture('/home/pi/Desktop/picture.jpg')
+camera.stop_preview()
+</code>
+//Warning, this will save to user pi's desktop, remember to change username if you aren't using user pi//
+Run the script :
+<code bash>
+$ python camera.py
+</code>
+You can view the picture by either copying it to another machine with ''scp'' or by using a screen and mouse/keyboard on the pi itself.
+==== Creating a Timelapse with Camera ====
+You can use the built-in ''raspistill'' tool or make up your own in your choice of code language.
+Example with ''raspistill'' :
+<code bash>
+$ raspistill -w 1920 -h 1080 - t 10000 -tl 1000 -o image%04d.jpg
+</code>
+This will take FullHD shots at 1 second interval for 10 seconds, naming them with 4-digit incremental numbers.
+If no ''-w'' and ''-h'' options are provided, the Raspberry Pi will default to taking full sized pictures : 4056 x 3040 which will weigh approx. ~6 MB each. Also note that a Pi 4 will not be able to take these effeciently at an interval ~< 2s.
+''raspistill'' has a lot of options and effects that can be activated/parametered, have a look at ''raspistill --help'' or ''man raspistill''
+[[https://www.raspberrypi.org/documentation/usage/camera/raspicam/timelapse.md|Official Documentation]]
+===== Scripts @ startup =====
 Modify the /etc/rc.local file (requires sudo)
@@ Line 33: / Line 96: @@
-==== Temperature checks ====
+===== Temperature checks =====
-=== CPU temp ===
+==== CPU temp ====
 <code bash>
@@ Line 42: / Line 105: @@
 Divide by 1000 to get °C format
-----
-=== GPU temp ===
+==== GPU temp ====
 <code bash>
@@ Line 49: / Line 112: @@
 $ /opt/vc/bin/vcgencmd measure_temp (Full Path)
 </code>
-----
 These measures were done on a Rapsberry Pi 4 running Raspbian with no heavy-duty program running, no screen or USB devices attached and at a room temperature around 20°C