Linked Questions

1
vote
0answers
108 views

5V relay with Raspberry pi 3 Model B [duplicate]

I am working on home Automation Project (Voice Recognition to light On/Off) and yes i'm new to raspberry pi I have: [ http://www.amazon.in/Raspberry-Pi-64-bit-quad-core-Cortex/dp/B01CCOXV34?ie=...
5
votes
5answers
6k views

Is there a component out there that can push a button i.e. will extend a rod about 1 inch and then retract it?

I'm basically trying to find something that can push a button for me. I want to be able to control it through code, just like you can with motors, LEDs etc.. via the GPIO on a Pi. I want it to extend ...
5
votes
4answers
4k views

How do I control GPIO-connected fan via code at a certain CPU temperature?

I have just bought a 5v Pi fan for my Pi3. I'm using Retropie 4.1 for the OS. I have connected the red and black wires of the fan to ground and GPIO 18 respectively. How can I get the fan to start ...
4
votes
2answers
31k views

Cooling fan powered directly from GPIO?

I have a Pi3 in a fairly enclosed environment, and I found that, even when my Pi was relatively idle (5% CPU usage) the CPU temp was averaging around 80C, which is close to the 85C where the Pi starts ...
3
votes
2answers
11k views

How to control the 5v output from raspberry pi to open and close a relay

I connected a protective relay to raspberry pi +5V (to relay VCC), GND (to relay GND) and pin 17 ports (to relay IN) . This relay controls a DC motor. The DC motor has a separate power supply ...
2
votes
2answers
7k views

Electronics of a water pump [duplicate]

So, I would like to connect a water pump to my Pi and programatically turn the pump on and off. I am looking at this pump: http://www.cooking-hacks.com/immersible-pump-water-tube-for-open-garden-...
5
votes
2answers
2k views

Easy way to switch on and off of 12V DC current

I recently bought a compressor and now I want to be able to turn it on and off programmatically using my Raspberry Pi Model B. Since I know nothing about electronics, it seems like the safe option ...
4
votes
4answers
2k views

Raspberry Pi GPIO input voltage Limit

I am doing a project in which I have a component that outputs a 5 Volt signal. Since the Pi is only able to handle 3.3 V I connected the signal to a voltage divider. I used a 4.7 kiloOhm and a 2.2 ...
1
vote
3answers
5k views

Raspberry pi control on/off switch with Relay

I would like to control on/off switches with relays for lights in my room. I found this relays http://www.ebay.com/itm/SSR-40DA-3-32V-24-80V-40A-Solid-State-Relay-Module-for-Arduino-Fast-Switching-/...
4
votes
3answers
1k views

Home automating lighting, while preserving light switches

I'm doing a feasibility study for automating the lighting in our house (eg. with Home Kit), while keeping the existing light switches fully functional. With regular switches, that would be tough, ...
2
votes
1answer
2k views

Powering 5V Fan GPIO 1 & 3

I am trying to power a small 5V .21 A fan via GPIO pins 1 & 3. I am using pins 1 & 3 due to the nature of the fans connecter. I keep receiving the error: fan.py:7: RuntimeWarning: A ...
3
votes
2answers
1k views

Wiring a Fan via SSR to a Raspberry Pi3 GPIO

I've reviewed many questions on the list, but still having difficulty driving my Fotek SSR-25 DA Solid State Relay (Spec Sheet - http://www.fotek.com.hk/solid/SSR-1.htm) from my Raspberry Pi. Here'...
1
vote
2answers
842 views

How can I power my magnetic switch?

Final edit: Got it working! Thank you all for your suggestions. The first issue was that my magnet was broken. I got a multimeter and tested the switch open and closed, and the meter was detecting ...
1
vote
2answers
1k views

Can I use a transistor as a relay with the Pi?

I want to build an electric circuit which has to have a power of nine volts. Can I use a circuit like this, without breaking the Pi? Or is there a better solution?
1
vote
2answers
497 views

Relay status led's are blinking but the relay coil is not activating

Devices I am using are: 1) Songle 2 channel relay module - https://www.electronicscomp.com/2-channel-5v-relay-module-with-optocoupler?gclid=...

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