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) * -- You received this message because you are subscribed to the Google Groups "ioio-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/ioio-users. For more options, visit https://groups.google.com/d/optout.
