There are 3 keys on the board: REC, PLAYE and PLAYL
This pin must remain HIGH for the duration of the recording.
There are two modes to play the voice in the voice chip: edge activated mode controlled by
PLAYE pin and level activated mode controlled by PLAYL pin
(1) Playback, Edge-activated: When a HIGH-going transition is detected on this input pin,
a playback cycle begins. Playback continues until an End-of-Message (EOM) marker is
encountered or the end of the memory space is reached. Upon completion of the
playback cycle, the device automatically powers down into standby mode. Taking
PLAYE LOW during a playback cycle will not terminate the current cycle. This pin has
an internal pull-down device. Holding this pin HIGH will increase standby current
(2) Playback, Level-activated:When this input pin level transits from LOW to HIGH, a
playback cycle is initiated.
Press this button for one time, you will hear the voice playback.
1 x pcDuino
1 x ISD1820 voice recording and playback module