Power Supply to Transmitter

Wireless Receiver Kits
#1

I want to wire a constant power supply to my transmitter, which will be mounted to the wall. Besides the battery contacts, are there places on the board I can solder wires from a 3v DC power supply? I see 5 holes in the lower left corner of the board, but can’t tell for sure what these might be used for.

Thanks!

#3

Thanks a lot! I’m very impressed with your product so far.

#4

You can see the white text label beside each holes, written as ‘6’ ‘D’ ‘C’ ‘-’ ‘+’ (might not in exact order).

The ‘+’ ‘-’ is for DC 3V input.

Please make sure the polarity is correct before apply power, or it may damage the transmitter.

#5

Any way to add an antenna to the transmitter?

#6

I’m afraid you can’t, because the onboard antenna’s working mechanism is different from external antenna.

#7

Thanks for always responding so quickly!

How would I connect an external antenna to the receiver, which has a coaxial cable? Is it the center conductor that gets wired to the antenna wire?

#8

See below, from 1:30 forward.

#9

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