carl stevenson
New Member
Hello
I have built an automated pump and irrigation system to water my plants from a water butt.
At the moment I am using a cheap timer relay module to control the pump. This timer draws 20 milliamp
Ideally I would like to find a lower power solution so was wondering if a picaxe would do the job.
So could somebody give me a rough estimate of power consumption for the following pickaxe and relay? Ive tried to work it out but am unsure of my calculations
I will have a 12 v battery connected to a voltage regulator. (7805) then a picaxe 08 powering a relay (which switches the pump on and off.)
The pickaxe is not connected directly to the pump, just the relay.
The pump will be off for 24 hours and then on for 1 minute then off for 24 hours etc so for the majority of the time the picaxe will just be paused and the relay not powered.
I am hopeful this will require less than 20ma to run.
I have built an automated pump and irrigation system to water my plants from a water butt.
At the moment I am using a cheap timer relay module to control the pump. This timer draws 20 milliamp
Ideally I would like to find a lower power solution so was wondering if a picaxe would do the job.
So could somebody give me a rough estimate of power consumption for the following pickaxe and relay? Ive tried to work it out but am unsure of my calculations
I will have a 12 v battery connected to a voltage regulator. (7805) then a picaxe 08 powering a relay (which switches the pump on and off.)
The pickaxe is not connected directly to the pump, just the relay.
The pump will be off for 24 hours and then on for 1 minute then off for 24 hours etc so for the majority of the time the picaxe will just be paused and the relay not powered.
I am hopeful this will require less than 20ma to run.