How can I make this work with Arduino. I want to replace a switch with an Arduino so I can control it remotely. The device after is turned on is sending power in waves to the switch so I will need to monitor this.
What I was thinking of is:
- having the wire that was going into the switch connected to an IN PIN on the board and the wire that was going from the switch back in the deice to an OUT PIN. After that when I want the switch open I will just monitor when the device sends power to the IN PIN and have power send from the OUT PIN
- use a transistor as a switch (but I'm not sure how to connect the ground for the Arduino). The device is its own circuit and has his own ground and everything
- use a relay (2 different circuits and I don't need to worry about ground for the Arduino)
Some measurements I took with my multimeter on the device:
- for DCV it shows between 140 and 155 when the selector is on 2000m and between 183 and 196 when set to 200m
- when I measure the Amps (DCA on my multimeter) the deice starts working as if the switch is on and at 2000u is shows 0 while at 200u it shows 00.3
Measurements I took from the wire that goes into the switch when connected to the Arduino IN PIN:
- 1.36 when I put DCV on 20 and 1369 when I select 2000m
- as for Amps is 008-009 when I have DCA on 2000u and 08.4 when I have the multimeter on 200u
Thank you