I have built this kit and it worked fine but I wish to know if there is a range of voltages it can work on because I would like to decrease the battery pack in physical size.
i.e. if it has to be 4.5 v then I might make it 3x 1.5 volt aaa cells or maybe a single 9v battery.
Many thanks
Kit requires 4.5 - 5V
Can I power the MK174 module with 5VDC provided by a 7805 regulator?
Yes.
Many thanks for prompt response.