Go to advanced search

by Tarcas
Mon Jan 27, 2014 11:33 pm
Forum: Troubleshooting
Topic: Red Light - Nothing Else
Replies: 6
Views: 1416

Re: Red Light - Nothing Else

Sorry, I don't know, but Google can tell you the answer. ;-)
by Tarcas
Mon Jan 27, 2014 10:31 pm
Forum: Troubleshooting
Topic: Red Light - Nothing Else
Replies: 6
Views: 1416

Re: Red Light - Nothing Else

Not to be cold, but I'd say send it back for a warranty replacement, assuming it is still under warranty. That'll take care of both your problems at once.
by Tarcas
Mon Jan 27, 2014 10:28 pm
Forum: Troubleshooting
Topic: Orico USB Hub not working
Replies: 8
Views: 4676

Re: Orico USB Hub not working

Although the Pi is powered through USB, it is NOT designed to be powered through another computer's USB port. It just needs more juice than can be provided. If you're powering it from a laptop, no wonder you don't have enough power. Try plugging it in using at least a 1A wall wart power adapter (you...
by Tarcas
Mon Jan 27, 2014 10:03 pm
Forum: Troubleshooting
Topic: kernel panic after fdisk
Replies: 11
Views: 2784

Re: kernel panic after fdisk

I'm trying to do the same as the OP, but I see what my problem is; I just don't know how to resolve it. fdisk shows the following partitions: Device Boot Start End Blocks Id System /dev/mmcblk0p1 2048 2324218 1161085+ e W95 FAT16 (LBA) /dev/mmcblk0p2 2326528 8028159 2850816 85 Linux extended /dev/mm...
by Tarcas
Sun Jan 26, 2014 2:08 pm
Forum: Automation, sensing and robotics
Topic: Opening Garage Door with Pi
Replies: 22
Views: 8885

Re: Opening Garage Door with Pi

I'm using 5V version of the relay board with the JD-VCC and VCC pins jumpered together. 5V from RPi to VCC pin, GND to GND pin, one GPIO to IN1 and another one to IN2 and it works. http://www.ebay.com/itm/1pcs-5V-2-Channel-Relay-Module-With-Optocoupler-for-PIC-AVR-DSP-ARM-Arduino-/281210838663?pt=L...
by Tarcas
Fri Jan 24, 2014 10:18 pm
Forum: Automation, sensing and robotics
Topic: Raspberry Pi Proximity card garage door opener
Replies: 4
Views: 3478

Re: Raspberry Pi Proximity card garage door opener

I'm not sure what a proximity card is (RFID card, maybe) but if the Pi can read it, the Pi can definitely control your garage door using a relay. Give more info and maybe I can offer more help.
You might consider adding a sensor or two so the Pi knows for sure whether the door is open or closed.
by Tarcas
Fri Jan 24, 2014 9:36 pm
Forum: Automation, sensing and robotics
Topic: Door sensor / alarm
Replies: 9
Views: 2972

Re: Door sensor / alarm

So all you want is for what you've got to repeat? Just put it in a loop that continues forever. I'm not very familiar with Python, but you can google "Python loops" as easily as I can to find the syntax. You'll probably want it inside your Try block. That way if it gets an interrupt, it breaks right...
by Tarcas
Fri Jan 24, 2014 9:26 pm
Forum: Automation, sensing and robotics
Topic: Using the PWM pin
Replies: 11
Views: 2776

Re: Using the PWM pin

The hardware PWM (on pin 18, AKA GPIO 1) does the PWM in hardware, so the chip takes care of it silently in the background. The software PWM provided by WiringPi requires the processor to continually switch the state of the pin, so you need a program to be running the entire time in order to do this...
by Tarcas
Fri Jan 24, 2014 9:15 pm
Forum: Automation, sensing and robotics
Topic: PiFace: High Voltage/Amperage Relay Board?
Replies: 8
Views: 4557

Re: PiFace: High Voltage/Amperage Relay Board?

In the name of keeping things simple and, as you put it "ease of wiring," avoid the DIY Relay circuit and go for a pre-manufactured relay board such as this one: http://www.ebay.com/itm/New-Style-5V-4-Channel-Relay-Module-Switch-Board-For-Arduino-PIC-ARM-AVR-DSP-PLC-/360718037491?pt=LH_DefaultDomain...
by Tarcas
Fri Jan 24, 2014 5:16 pm
Forum: Automation, sensing and robotics
Topic: Opening Garage Door with Pi
Replies: 22
Views: 8885

About relay boards

I know I'm late to the party, but I picked up a 4-relay board on Ebay for $5. For anyone else looking to do this project or one like it, here's a link to a 2-relay version for $3.24 shipped: http://www.ebay.com/itm/2-Channel-12V-Relay-Module-With-Optocoupler-For-Arduino-DSP-AVR-PIC-ARM-/221342495715...
by Tarcas
Fri Jan 24, 2014 3:51 pm
Forum: Automation, sensing and robotics
Topic: Can a Pi automate button presses on a separate device?
Replies: 5
Views: 1307

Re: Can a Pi automate button presses on a separate device?

Absolutely this is possible. You'll want to use a Transistor (do your homework if you're not familiar with them) with the Base controlled by the Pi's GPIO pin (through a resistor) and the Emitter and Collector connected to the same connections that the button on the controller would bridge. In short...
by Tarcas
Fri Jan 24, 2014 3:34 am
Forum: Automation, sensing and robotics
Topic: Using WI-FI for 'Robots' - home vs. away
Replies: 4
Views: 1209

Re: Using WI-FI for 'Robots' - home vs. away

I agree with Keith that setting up the car as a hotspot would be the way to go. As for connecting it to another network, I would install a "mode" switch. Connect a button (or switch) on the RC car to a GPIO pin, have a script check that pin every now and then (every second or less) and when it sense...
by Tarcas
Thu Jan 23, 2014 10:31 pm
Forum: Automation, sensing and robotics
Topic: Home automation with RPI for control wired "things"
Replies: 43
Views: 24221

Re: Home automation with RPI for control wired "things"

If you haven't already, check out Jonathan Oxer's SuperHouse YouTube series. He has done a lot of what you're talking about doing, and more. You can get some ideas from how he's done it. I'm not saying his way is the best way, but you can use it as a template. Episode #1: http://www.youtube.com/watc...
by Tarcas
Sat Jan 11, 2014 2:52 pm
Forum: Beginners
Topic: Spin the Bottle via Pi
Replies: 3
Views: 646

Re: Spin the Bottle via Pi

I think you're right; it will be a great way to learn about gpio and coding. That tutorial should give you everything you need as far as the circuitry goes. If you have any questions, I'm watching this topic so if you post a followup, I may be able to help (but I'm certainly not going to do it for y...
by Tarcas
Thu Jan 09, 2014 6:09 am
Forum: Beginners
Topic: Spin the Bottle via Pi
Replies: 3
Views: 646

Re: Spin the Bottle via Pi

If you want to learn how to do it, I suggest starting with this tutorial: https://projects.drogon.net/raspberry-pi/gpio-examples/tux-crossing/ It will teach you to light LEDs, introduce delays, and read a button. The final code that is provided in that tutorial should actually be quite easy to alter...
by Tarcas
Thu Jan 09, 2014 5:45 am
Forum: Beginners
Topic: Beginner Project IR + Pictures
Replies: 3
Views: 845

Re: Beginner Project IR + Pictures

I don't know much about Python, but the kill or killall commands are probably what you're looking for. kill will end a process by PID (which can be found from "ps") killall will end a process by name. You'll find a lot of Linux documentation about these two commands, as well as how to use ps, if you...

Go to advanced search