Relay connection to IOIO

[heikki...@kolumbus.fi]

Hello !
Since I am not very good in electronics, could somebody explain how this relay should be connected to IOIO board:

http://www.aliexpress.com/item/Free-Shipping-5pcs-Relay-circuit-modules-high-low-control-support-3-3V-5V-microcontroller/1966924229.html

This HK4-100f relay has four pins GND +5V ENL ENH

GND is clear, but should I connect +5V to IOIO +5v pin and ENH to IOIO pin defined 3.3V digital output in my prog ?
Thanks !

From the product description:

This module has several advantages: 

High drive can also be driven low 

You know 51 microcontroller IO port reset is high, if the active high, the relay when the power will mistakenly triggered, so shop relay modules can be active low. To solve this problem 

3.3V devices, and other devices such as the STM32: The high level trigger, very easy to use (note, 3.3V device can not use low-level trigger mode, connect electrical relay has been triggered) 

 

Module pin definitions: 

+5 To 5V power supply module 

GND module to 

ENL low active (relay) level range of 0-4V (generally 51 microcontroller used in this way)

ENH active high (relay) level range 2-5V (3.3V CPU like STM32 ARM, etc. using this method)

 

[Ytai Ben-Tsvi]

I understood it the same way as you did. Seems like 5V, GND and ENH to a digital output are the way to go.

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[heikki...@kolumbus.fi]

Thanks Ytai, I'll try that !