Tagged Questions

The Raspberry Pi is a credit-card sized computer that plugs into your TV and a keyboard. It’s a capable little PC which can be used for many of the things that your desktop PC does, like spreadsheets, word-processing and games. It also plays high-definition video. The design is based around a ...

learn more… | top users | synonyms

2
votes
1answer
59 views

What's the best approach to implementing a remote control lock?

I was thinking how I would go about building a remote control lock with an Arduino (or better yet a Raspberry Pi when I get one) and thought I'd check to see if any were available for sale. Schlage ...
2
votes
2answers
69 views

Is this a serial LCD?

I had a broken remote for a small RC helicopter that I took the LCD off. I dont know the size, but I could try to describe the pins and maybe someone could pinpoint what this is. It has 7 pins, and ...
3
votes
1answer
118 views

DIY Electrical Safety

I'm quite into DIY projects and I am looking at making an electrical unit out of a Raspberry PI and a computer monitor. I was wondering if someone could provide me any information on what I should ...
1
vote
1answer
218 views

How to connect together: Raspberry, Arduino, PC PSU, Usb Hub, Usb Hdd - without issues?

A pc psu provides power for: arduino uno (via de standby 5v power + ground so it always has power) raspberry pi (via a 5v + ground connection) usb hub (via a second 5v + ground connection) ...
1
vote
1answer
80 views

GPIO and relay quesiton

I have a question about the YouTube video Raspberry Pi Controls Relay. It's about controlling a SainSmart 4-Channel 5V Relay Module. Is it driven directly off the 3.3V GPIO?
1
vote
2answers
219 views

Driving a single-relay board with Raspberry Pi

I have one of these single-relay boards and I am trying to control it with my RasPi's GPIO. (I'm a complete noob). I am using WiringPi and in this particular case I'm using pin 1 (aka BCM pin 18) as ...
4
votes
2answers
108 views

Do you need to UL Certified the enclosure with the board inside?

I want to use the RaspberryPI in an industrial environment that requires all devices have UL certification. The RaspberryPI board has UL certification but there is currently no enclosures that are ...
5
votes
3answers
178 views

Using larger resistor values

I'm connecting a Raspberry Pi to an LED and this video tutorial says that I need 270 Ω resistors. I only have 100 Ω, 1 kΩ, and 10 kΩ resistors with me. Is it okay if I use the 1 kΩ resistor?
0
votes
2answers
122 views

i2c bus isolation using Si8400

I am currently working on optical isolation of the i2c bus in order to remove the risk of damaging the PI from outside noise. I am using Si8400 optical isolator but I was so far unable to make it ...
-2
votes
1answer
133 views

Is it possible to connect a raspeberry pi to a 3.2" TFT LCD touch panel?

I am wondering if i can connect a raspberry Pi to this? How hard would it be?
0
votes
2answers
304 views

How RF 443.92 MHz works?

I have an RF 443.92 MHz transmitter and the receiver, the model is TWS-DS-3 and I'm trying to understand how does it works. There are 4 pins (GND, Data In, Vcc, ANT), I'm going to wire the Vcc on a 5V ...
7
votes
1answer
247 views

Plugging a LDR into GPIO pins of a Raspberry Pi

I want to connect a LDR into the GPIO pins of my Raspberry Pi, I know that Raspberry Pi doesn't have an analog-to-digital converter so what I want to do is to signal a HIGH signal (3.3v) on the GPIO ...
1
vote
0answers
81 views

Datasheet for this switch-mode DC-DC regulator

I'm trying to regulate a 6-cell NiMH battery pack (7.2V) to supply a constant 5V to a Raspberry Pi. I've ordered this DC-DC regulator after reading a suggestion on another website. I want the ...
1
vote
3answers
206 views

I2C optocoupler separation - which IC?

I am designing a circuit which will have some external I2C sensors connected to it and thus I want to protect it from noise - via an optocoupler. I have to say that I am a complete novice to this all ...
2
votes
3answers
296 views

Raspberry Pi wiring simple LED

I'm completely new to hardware in general. I just got a raspberry pi and was messing around trying to get an LED to light up. I have everything wired like the picture below. I am using a 330ohm ...

1 2
15 30 50 per page