Hello
I am trying to turn on a timer relay XY-LJ02 Arduino MKR1000 but something doesn't work I assume it has yo do with wiring tested the board and the relay
I have another project using simpler relay sunFounder 2 Channel DC 5V Relay and it works but with the timrr relay no success...
is there a chance somebody please drow a wiring diagram?
Equipment ARDUINO MKR1000
Relay XY-LJ02
Thanks !
So how are you wiring it up at the moment?
I would have thought that Signal Gnd to Arduino Gnd and output from the MKR1000 to the high level signal input. The spec at 6-30V Time Delay Relay Module Control Timer Switch Trigger Cycle Module USB Digital LCD Display – buy at low prices in the Joom online store indicates that has an input level of down to 3V. You might not get that much from a MKR1000 so measure it.
The low level input has a 0.0V~0.2V input range and you might not be able to get the MKR1000 to output that low of a signal again measure it.
The board needs power, the data given in that link is a little confusing to sat the least. It says:-
Working Voltage:DC 6V-30V or 5V Micro USB
Now if it works from 5V USB why will it not work from 5V external power? It makes little sense unless the person writing it happened to find out the one he had would work with 5V. So how are you powering it, and does the external power have a common ground with the Arduino?
Finally if the MKR1000's signal is not enough to trigger it then use a transistor to boost the voltage. Check first by touching a wire from the high level input to 5V to see if it triggers before using the transistor.
But please post a schematic of how you have wired it up and we can go from there.
I was thinking about transistor but what transistor value should I get? How to calculate it? whats the formula?
I did wire it as you mention
but it doesn't let me add any attachments
in addition tried the low signa at first powered with micro usb outputs 4.91v
Then used external supplies executes 4.97v
doing common ground
BTW when connecting the relay directly +/- it does powers on
I was thinking about transistor but what transistor value should I get? How to calculate it? whats the formula?
Any small signal NPN transistor will do.
Have a 10K base resistor and a 1K collector resistor and you won’t go wrong.
BTW when connecting the relay directly +/- it does powers on
Not at all sure what you mean by this. What voltage is this?
