- Joined
- Aug 17, 2018
- Messages
- 18
- Motherboard
- HP
- CPU
- EliteDesk
- Graphics
- AMD
Hi All,
When my 2008 24" iMac's video card died a few years back I finally decided to turn it into an external monitor. It's largely worked quite well; removed most of the components from the case, found a display controller on eBay and got it working over HDMI using the original power supply, along with the speakers. I also succeeded in getting the original bluetooth and IR modules running over USB, using pinouts from schematics I found on the interwebs.
However, my USB conversion of the built-in camera (iSight?) has refused to be recognised, not by the USB bus on my macbook, nor by that of my desktop running Ubuntu linux -- no sign of life whatsoever. I've seen several accounts here and elsewhere of people getting these cameras working over USB, and I had success with the other USB devices, so I'm just wondering if there's a trick to it that I'm missing or if it really is dead. I've juggled some of the wires around in trial and error, so I guess I may have fried something -- for example, I've noticed that when I connect the ground and +5V USB lines to the camera (assuming I got the pinout right), the voltage across ground and the positive USB signal terminal of the camera is over 3V, while that between ground and the negative USB signal terminal of the camera is on the order of millivolts -- this suggests to me something is wrong as I'd expect the two USB signal terminals to be at similar voltages, but I confess I know next to nothing about how USB actually works.
Any wisdom from the forum is most welcome, thanks in advance.
When my 2008 24" iMac's video card died a few years back I finally decided to turn it into an external monitor. It's largely worked quite well; removed most of the components from the case, found a display controller on eBay and got it working over HDMI using the original power supply, along with the speakers. I also succeeded in getting the original bluetooth and IR modules running over USB, using pinouts from schematics I found on the interwebs.
However, my USB conversion of the built-in camera (iSight?) has refused to be recognised, not by the USB bus on my macbook, nor by that of my desktop running Ubuntu linux -- no sign of life whatsoever. I've seen several accounts here and elsewhere of people getting these cameras working over USB, and I had success with the other USB devices, so I'm just wondering if there's a trick to it that I'm missing or if it really is dead. I've juggled some of the wires around in trial and error, so I guess I may have fried something -- for example, I've noticed that when I connect the ground and +5V USB lines to the camera (assuming I got the pinout right), the voltage across ground and the positive USB signal terminal of the camera is over 3V, while that between ground and the negative USB signal terminal of the camera is on the order of millivolts -- this suggests to me something is wrong as I'd expect the two USB signal terminals to be at similar voltages, but I confess I know next to nothing about how USB actually works.
Any wisdom from the forum is most welcome, thanks in advance.
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