tinderbox/freeduino feature map (see below)

tinderbox features (black) explained:

Reset button: When all else fails, reset.

7-segment display: Displays the tuned frequency in megahertz (MHz).

Set frequency button: Sets frequency of transmitter after tuning up and down.

Tune down button: Decreases the transmission frequency in increments of 200kHz.

Tune up button: Increases the transmission frequency in increments of 200kHz.

On-Air/Standby button: Turns the transmitter on and off. Does not reset freeduino.

FM transmitter module: takes the audio input and frequency modulates a carrier signal so that it may be received at a distance.

BNC Connector: Coaxial cable attachment to an antenna.

1/8in. stereo jack: Stereo line level inputs go here.

freeduino features (grey) explained:

(for a more detailed explanation, look here...)


USB-mini port: Provides 5VDC power and is a conduit for control and programming.

AREF: Analog reference voltage.

GND: Ground reference.

7 digital I/O lines: Provides seven digital input/output lines that can be programmed to send or receive digital information.

Serial UART: Hardware serial communications port.

4 analog I/O lines: Provides the ability to read analog inputs.

GND: Another ground reference.

5VDC: Provides positive five volts direct current.

3.3VDC: Provides positive 3.3 volts direct current

DC power jack: 2.1mm barrel jack power connection, center pin positive. Can tolerate voltages in the range of 7-12VDC.