Completing mains circuit with relay

[sachinwable]

Hi,

I am a software guy with limited knowledge of electronics doing some experiments on pi.

I have pi3 model B and a 1 channel relay of 5 V. Can I use these 2 to complete a circuit that powers on my TV or Fan or Bulb? I am afraid of burning my pi if i use it with a relay completing a circuit with mains

Thank you,
Sachin

[Jednorozec]

If you're not comfortable with electricity you should get something like this http://www.pwrusb.com/index.html

[6by9]

Echoed. Mains electricity must be treated with respect.
Another alternative is https://energenie4u.co.uk/index.phpcata ... NER002-2PI

[Massi]

Hi,

I am a software guy with limited knowledge of electronics doing some experiments on pi.

I have pi3 model B and a 1 channel relay of 5 V. Can I use these 2 to complete a circuit that powers on my TV or Fan or Bulb? I am afraid of burning my pi if i use it with a relay completing a circuit with mains

Thank you,
Sachin

if you connect it correctly, you can complete the mains circuit.
if you connect it wrongly, you can burn your pi3, and also yourself

if you are looking for the solution, take something pre-built
if you are looking for experiments, try it with lower voltage/current and at the end connect to mains.
You could build a box with proper connectors to avoid flying mains cables

PS: you should also check the relay specs to know if it can work safely with the raspi..

[davidcoton]

For any project involving mains electricity, you must be familiar with your local electrical regulations, and with the best electrical practice. If your skills are software based and not in electrical engineering, either avoid mains projects, or get a competent local electrician to check your work at every stage -- planning, building, inspection, test -- before switching on the mains.

The cost of getting it wrong can be smoked Pi, house fire, or death. Don't take any risks.