Hello,
I'm new to arduino and this forum.
Would like to know if it is feasible to use 12v to power a 315mhz xmitter
and use a voltage divider to drop the voltage to the arduino. Two reasons
to for the 12v. The 23A 12 volt battery is much smaller than a 9v bat. and
the higher voltage should add range to the xmitter. The gnd and vcc of the
xmitter will be feed by the 12v and the data pin will be connected to the arduino.
Not sure if this will work. Any suggestions or thoughts will be appreciated.
Steve
Powering the transmitter with 12 v is fine if it was designed for it. Just check the serial data specs if that is all that is connected to Arduino is RX TX and a common ground. The data most likely will be ok if anything the transmitter may be 3.3 v input so the best thing is to google the transmitter and find its Rx Tx specs.
Caution!
The 23A battery is only rated at approx. 55mAh and thats at a 2mAh discharge. Not a lot of current to play with, although the 9v is usually only around 90mAh.
Daz
If you're transmitting, then 5V output to the transmitter should be fine.
Nothing is coming back, is it?
Hi,
Welcome to the forum.
Please read the first post in any forum entitled how to use this forum.
http://forum.arduino.cc/index.php/topic,148850.0.html
A 23A battery will not be any better than a PP3 battery for a start, not enough current capacity.
A voltage divider will not provide you with a regulated supply that the Arduino requires.
Can you post the specs/data of the 315MHz tx/rx, I don't think it will withstand 12V supply.
Tom.. 