So I bought a pet food dispenser for our 12 week old puppy but the little WITCH has bitten through the USB cable that powers the unit, luckily she is unharmed but now I'm paranoid she'll do it again!.
The unit can also be run from batteries (in the instructions it says if there is a power outage then the batteries kick in), it needs 3 x Type C Batteries to operate however (seriously what year is it?, 1990 still!), I believe each of these is 1.5 volts so a total power of 4.5volts (3 x 1.5)? or though on the unit itself it says to use only a 5v power supply but I'm guessing 4.5 volts that the batteries supply is also just enough!!?
As 3 Type C batteries will work out fairly expensive (depending on how long they last) I was thinking is it possible to use just a single 9v battery with a resistor installed on the Live side to reduce the 9v down to 4.5-5v and solder a 9v battery socket/plug to the neg and pos in the battery bay??.
In my head this would work but not sure in practice!??
The unit can also be run from batteries (in the instructions it says if there is a power outage then the batteries kick in), it needs 3 x Type C Batteries to operate however (seriously what year is it?, 1990 still!), I believe each of these is 1.5 volts so a total power of 4.5volts (3 x 1.5)? or though on the unit itself it says to use only a 5v power supply but I'm guessing 4.5 volts that the batteries supply is also just enough!!?
As 3 Type C batteries will work out fairly expensive (depending on how long they last) I was thinking is it possible to use just a single 9v battery with a resistor installed on the Live side to reduce the 9v down to 4.5-5v and solder a 9v battery socket/plug to the neg and pos in the battery bay??.
In my head this would work but not sure in practice!??