2 actuators + relay + 3.7V Lipo + DC regulator, How an I make them all work?

So Ive been trying for a couple days to get these 2 actuators working through the relay using an external power source, thats not a problem but because the Lipo is 3.7V and the actuators are 12V I have a DC regulator that boosts the voltage from the Lipo up to 12 but I cant seem to get it all working.

The actuators are 12V Lipo is 3.7V the relay can have input of 3.5 to around 12 I think and the regulator takes in minimum 2V and outputs 12V

The relay is connected properly to the arduino that I got, the middle pins on the relay are the commons, top is normally open and bottom is normally closed. I have the voltage from the battery stepped up before it reaches the relay but regulator only has 3 pins; Vin, Vout and ground so I split the V out to go back to the actuators, this is where i get confused I dont know where the normally open pins on the relay come into play. Any help?


Without seeing the specs. of the Actuators I can only suspect that you do not have enough current to drive the actuators with a buck boost setup. yes you can boost voltage but it is usually limited to running low power consumption devices. you should start around 12 volts.

I'm quite confused. Don't you know how to use normally open and normally closed relay contacts?

Im trying to upload a picture of the setup, keeps saying my picture file is to big even after making the resolution really small

http://www.chaocheng.net/en/goods/show/3367.aspx thats the website for the specs of the solenoid/actuator it says 6 W at 24V, even if it was 6W at 12V thatd still be 2A and im guessing the LIPO doesnt produce that

Ok.... I think you have a decimal in the wrong place .25 amps should be more like it. DC motors will run at reduced voltage. Solenoids are not as tolerant. Start with two 12 V batteries and run them in parallel (24 V). Use this to operate the solenoids with the use of an appropriate relay. These are not considered actuators although often people do. Install leads from one of the batteries (12V) to run the arduino. Research amp hours so you can pick the battery for the length of time you want to run them between charging. Pay attention to duty cycle on these, some are intermittent duty. They may give a little kick back so you may want to put in a diode to help with this.

good Luck.