Implementing a system based in Android + IOIO + relay problem + connector

[annlee]

Hi there, I am doing a system based on Android + IOIO board + Relay for a 230V/16A connector (I am European)

IOIO board only gives 3.3V output (not 5V), so I need a 3.3V relay that works for a 230V/16A connector, is there any relay with this specs?

or

should I need a MOSFET transistor between the IOIO board and the relay? which one?

Thanks in advance

 

[annlee]

Ah, you do not appear to be burying it but putting it in an accessible underground chamber. That makes a difference to the cooling aspects and the accessibility for maintenance. The recommendations from others about using under rated components to minimise heat will probably still be valid. Will you get a reliable signal to activate the phone without an external aerial?

We need to test several covers and study which materials have in average better: hardness-heat insulation-signal allowance, however its too early stage to know that yet

 

[grantr37]

are there any questions that you have or would you like some help with your hardware design?

 

[annlee]

are there any questions that you have or would you like some help with your hardware design?

Thanks you are very kind,

I have a lot but if you dont mind I will rescue this thread when I receive the hardware and start working on it

Examples: I plan to add a typical green/red LED to show if its working or not, plus a proximity sensor to start the App

Please mods don't close this thread

 

[annlee]

Dear expert electricians, since the prototype must be "low-cost" I need to find cheap parts.

This SSR relay SSR-25DA 25A Solid State Relay - White - Worldwide Free Shipping - DX

seems to work for my specs: control of 3.3V, gives 16Amps/230V.

Furthermore, seems to work over 100ºC (sheet: http://www.fotek.com.tw/pdf/etc_33.pdf) does not even need a heat sink!!


Do you think this one can work or am I missing anything?

Thank You~

 

[ik_cw]

Thanks for all of the info. This is something I have needed a solution with as well. Cheers.

 

[annlee]

Thanks for all of the info. This is something I have needed a solution with as well. Cheers.

In few days I will have all the components and will update this,

it promises to be interesting...