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--- projects:bon_accord_webcam [2020/10/29 15:59]
neil
+++ projects:bon_accord_webcam [2021/05/02 14:45]
admin
@@ Line 1: / Line 1: @@
 ====== Bon Accord Webcam ======
-I set this up over lockdown (in the summer) to see how busy the beer garden was (and whether there was a table available) at a glance on my phone.  It could be moved horizontonally and vertically from both the web interface and from a command line interface (much more responsive).  It was a USB telescope (I'm about 150 meters from the beer garden) velcro mounted on a USB missile launcher.  I controlled it with a PHP script that moved the mount using shell commands to a raspberry pi mounted in the window of one of the bedrooms.
+I set this up over lockdown (in the summer) to see how busy the beer garden was (and whether there was a table available) at a glance on my phone.  I wanted to just use what I had lying around.  If I could do this again (and I probably will) I think I'd make something with stepper motors (so I could return it to fixed positions).
-The website was only temporary (I've sinced moved) but with the camera movement interface it looked like this:
+It could be moved horizontonally and vertically from both the web interface and from a command line interface (much more responsive).  It was a USB telescope (I'm about 150 meters from the beer garden) velcro mounted on a USB missile launcher.  I controlled it with a PHP script that moved the mount using shell commands to a raspberry pi mounted in the window of one of the bedrooms.
+It was one of these missile launcher USB gadgets \\
+{{:projects:pasted:20201029-160202.png?0x400}}
+With a USB telescope mounted to it with velcro scraps \\
+{{:projects:pasted:20201029-160102.png?0x400}}
+The website was only temporary (I've sinced moved house) but with the camera movement interface it looked like this:
 {{:projects:pasted:20201029-153406.png}}
@@ Line 11: / Line 19: @@
 ===== Technical details =====
-[[https://motion-project.github.io/|Motion]] was used to stream the output from the USB telescope to a port on the Rasperry Pi.  This was then embedded in an img tag on the front end (refreshed twice a second).  The movement buttons were PHP wrappers to a python command line program, [[http://lukecole.name/usb_missile_launcher|USB missile launcher]].
+[[https://motion-project.github.io/|Motion]] was used to stream the output from the USB telescope to a port on the Rasperry Pi.  This was then embedded in an img tag on the front end (refreshed twice a second).  The movement buttons were PHP wrappers to a python command line program, [[https://www.lukecole.name/research_and_projects/personal/usb_missile_launcher/|USB missile launcher]] ([[https://sourceforge.net/projects/usbmissile/|sourceforge link]])
-This command line program took simple parameters to move the USB missile mount, for example:
+This command line program took simple parameters to move the USB missile mount, for example to move the launcher right for 30 milliseconds:
 <code bash>
 ./USBMissileLauncherUtils -R -S 30
 </code>
-Would move the missible launcher right for 30 milliseconds.
-I wrote a simple command line wrapper to allow me to control the movement from the console:
+I wrote a simple command line wrapper to allow me to control the movement from the console:
 <code bash>
 #!/bin/bash
@@ Line 50: / Line 58: @@
 This allowed the camera to be moved using the keyboard arrows ([A, [B, [C, [D) and the speed (length of time the motor would be turned on) could be set using the number keys.
-The PHP wrapper was pretty simple, it only allowed a fix amount of movement (30 milliseconds):
+The PHP wrapper was pretty simple, triggered from the buttons in the web interface, it only allowed a fix amount of movement (30 milliseconds):
 <code php>

neil.mckillop.org

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