Hi. Looking to create an irrigation system for my garden and i have a question regarding the power of solenoid valves, like this https://m.aliexpress.com/item/33019875310.html?pid=808_0000_0109&spm=a2g0n.search-amp.list.33019875310&aff_trace_key=&aff_platform=msite&m_page_id=1788P-t3w7hApqBHfWmWvipA_DMI3tupDQ-fmRnJ-00i1wS6Sq9k7ybdcLrkwmeDVk5y1562774480676
I am using an esp8266 nodemcu board and from it i will control the valve. The problem is the power. Some hints please?
atux_null:
Hi. Looking to create an irrigation system for my garden and i have a question regarding the power of solenoid valves, like this https://m.aliexpress.com/item/33019875310.html?pid=808_0000_0109&spm=a2g0n.search-amp.list.33019875310&aff_trace_key=&aff_platform=msite&m_page_id=1788P-t3w7hApqBHfWmWvipA_DMI3tupDQ-fmRnJ-00i1wS6Sq9k7ybdcLrkwmeDVk5y1562774480676I am using an esp8266 nodemcu board and from it i will control the valve. The problem is the power. Some hints please?
Since the link you gave has NO specs on the valves, how do you expect someone to help you with the power required?
Buy one and measure the resistance of the coil. Ohms law will give you the current at 12 volts. Then you can determine the power needed.
Use a MOSFET to switch the valve on and off, controlled by your Arduino pin.
Paul
i have a question regarding the power of solenoid valves
We have no idea what the above question means to you.
We know exactly what it means to us (because we know OHM's LAW), but we don't know
if you know what it means.
Please define your terms.
WHAT (exactly) are you asking ?
Do you even know what the term POWER means ? (exactly)
If you describe what you perceive the power problems to be, you might get some hints.