[vc_row][vc_column][vc_column_text]This module board is based on ISD18B20， which is a single-chip single-message record/playback device.

In this post we will demo how to use  ISD1820 record and playback the voice on pcDuino.

Note: pcDuino3S has audio jack, and this is not necessary.

[/vc_column_text][/vc_column][/vc_row][vc_row][vc_column width=”1/1″][vc_tour][vc_tab title=”Introduction” tab_id=”1399537602-1-97″][vc_column_text]

There are 3 keys on the board: REC, PLAYE and PLAYL

1) REC

This pin must remain HIGH for the duration of the recording.

2) PLAY

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
consumption.

(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.

[/vc_column_text][/vc_tab][vc_tab title=”Part list” tab_id=”1399537602-2-82″][vc_column_text]1  x  pcDuino

1  x  ISD1820 voice recording and playback module

Jumper wires[/vc_column_text][/vc_tab][vc_tab title=”Wiring Diagram” tab_id=”1399537631100-2-1″][vc_column_text]

• ISD1820 voice recording and playback module  VCC  – > pcDuino VCC
• ISD1820 voice recording and playback module GND  – > pcDuino GND

[/vc_column_text][/vc_tab][vc_tab title=”Procedure” tab_id=”1399537631923-3-2″][vc_column_text]First press the  REC to record the voice

Then you can choose the PLAY button to play the voice out. [/vc_column_text][/vc_tab][/vc_tour][/vc_column][/vc_row]