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by AlecIs
Thu Jun 04, 2020 6:58 pm
Forum: General discussion
Topic: Relay Current Draw
Replies: 5
Views: 325

Re: Relay Current Draw

@pcmanbob: The board is active low, but I'm not seeing any more than a 2mA draw on the GPIO lines when the relay is activated. If I were grounding the relay through the GPIO, wouldn't I see a bigger draw when the relay was active? I'm measuring the draw by putting my meter in series with the circuit...
by AlecIs
Thu Jun 04, 2020 5:56 pm
Forum: General discussion
Topic: Relay Current Draw
Replies: 5
Views: 325

Relay Current Draw

I've been following along with the various threads about wiring relay modules to an RPi and I decided to take the plunge. I've got an RPi Zero W and a 2 relay module (https://www.amazon.com/MCIGICM-Channel-Raspberry-Optocoupler-Expansion/dp/B072BY3KJF/). I wired them up directly (see Fritzing pic be...
by AlecIs
Tue Jun 02, 2015 1:43 am
Forum: Raspberry Pi OS
Topic: Configuring Network using dhcpcd
Replies: 11
Views: 75191

Re: Configuring Network using dhcpcd

I had a similar problem - my WLAN0 interface was being assigned both a static IP (because I configured it that way in /etc/networking/interfaces) and a DHCP address. The fix was to edit /etc/dhcpcd.conf and change the entry so that the dhcp daemon uses clientid (aka MAC address) instead of duid. I'm...
by AlecIs
Mon Jun 24, 2013 1:50 am
Forum: Graphics, sound and multimedia
Topic: HP HD-2200 Webcam - Dark Pictures
Replies: 4
Views: 3332

HP HD-2200 Webcam - Dark Pictures

(Apologies if I'm posting in the wrong forum . . .) I have a RPi model B running Raspberrian Wheezy. I've been messing around with an HP HD-2200 webcam trying to get it to take pictures with fswebcam. What I'm finding is that the pics I take are very dark (as you'll see in the sample below). A diffe...

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