How to power my nodeMCU and water pump?
Posted: Mon Aug 21, 2017 1:03 pmHello guys!
I've currently got a setup going where im trying to automate some watering of my plants.
I have an nodemcu thats is collecting data from a DHT22 sensor aswell as a moisture sensor.
These are both running of the 3.3V pin output.
But now I want to connect a water pump that wants 5V power.
So far I've been running everything with the usb cable from the PC while programming and fiddling with everything.
But now that I want to power the pump I'm wondering how I can do this. Both from the PC and with an external power source.
I have a relay module like this one:
https://www.kjell.com/se/sortiment/el-v ... -1x-p87878
That I can use. but i'm not really sure how to connect everything.
Because I can't connect the powersupply directly to the nodemcu and power the waterpump through that right? Since there is no 5V output on it.
So how do I actually connect everything?
I have an external power supply that is 5V 2.1A output which has a micro USB connection on the other end, it would seem this is perfect for the setup I have if I could just connect this directly to the nodemcu.
Any and all advice is greatly appreciated!
I've currently got a setup going where im trying to automate some watering of my plants.
I have an nodemcu thats is collecting data from a DHT22 sensor aswell as a moisture sensor.
These are both running of the 3.3V pin output.
But now I want to connect a water pump that wants 5V power.
So far I've been running everything with the usb cable from the PC while programming and fiddling with everything.
But now that I want to power the pump I'm wondering how I can do this. Both from the PC and with an external power source.
I have a relay module like this one:
https://www.kjell.com/se/sortiment/el-v ... -1x-p87878
That I can use. but i'm not really sure how to connect everything.
Because I can't connect the powersupply directly to the nodemcu and power the waterpump through that right? Since there is no 5V output on it.
So how do I actually connect everything?
I have an external power supply that is 5V 2.1A output which has a micro USB connection on the other end, it would seem this is perfect for the setup I have if I could just connect this directly to the nodemcu.
Any and all advice is greatly appreciated!
