I have been making my first arduino project for a while now and have finally put it together. its an arduino uno with a relay sheild (One-stop Online Shop For Smart Home, HMI Display, Airspy, Diy Kits l ITEAD STUDIO) and an nrf24l01. there are 2 of these one is the sender and one is the receiver.
Basically it switches a solenoid on and off wirelessly.
It all works fine until i connect the solenoid, when the solenoid is connected to the relay it will only turn on and off once. After this the receiver needs to be reset and then it will do it once again.
i have tried separating the power supplies for the board and valve and it still does the same thing.
when i disconnect the solenoid the relay can be switched as many times as you like.
Any ideas why?
Thanks is advance,