I am currently working on a project involving the use of several linear actuators which I hope to control using the Arduino. I am also using relays to control the actuators. What I am concerned about is the power supply that I should be using to power all the actuators, relay coils and the arduino (along with some other electrical components connected to the arduino such as the ultrasonic sensors and LCD display). Preferably, I would like to use a single power source to power all the components.
The actuators that I am using are the L16-P linear actuators by Actuonix rated at 12V and a current draw of <100mA (based on the amount of load it is lifting). The power is cut when the desired position is reached after extending or retracting. 3 of such actuators are used. The 4th actuator is a heavy duty actuator rated at 12V/24V (I am still researching on an exact one to use) but requires a high full load current draw of 20A. I am using the PA-17 Heavy Duty Actuator by Progressive Automations as an example. These 4 actuators are controlled by a 12V 8 channel relay module with 2 relays for each actuator to allow control for moving in both directions. I am using a Arduino MEGA 2560 in this set up, along with some other components such as a rotary encoder, a 16x2 LCD, a HC-SR04 ultrasonic sensor and some LEDs.
My plan was to power this entire set up with a single 12V battery to power the 4 actuators, the 8 relay coils via JD-VCC (without the jumper) and the Arduino MEGA, with its Vin connected to the batteries positive terminal and GND pin to the negative terminal.
Would this approach be feasible? I was thinking that a typical 12V battery would drain fast when powering such a set up. Will there be a risk of the Arduino frying since it is powered at its peak allowable voltage? If I were to use the 24V actuator instead, then I cant possibly use the same battery to power the Arduino anymore. Should I use a 6V 8 Channel relay module instead? Are there other more efficient ways to do this? I am a complete beginner to Arduino and the world of electronics. Much help is appreciated!!