Description
The ISD1820 is a record and playback module that can record a sound and play it whenever required. The module comes with a microphone to record the sound and an 8-ohm speaker to play the recorded sound. By default, the recording time is 8 seconds but can be extended up to 20 seconds by replacing a single resistor. The operating voltage is from 3V to 5V.
Simply power the ISD1820 Voice module and press the record (REC) button, record the audio, and then use PLAYE or PLAYL button to play the recorded audio. It can also be interfaced with a microcontroller to automate the process.
BUTTONS CONTROL AUDIO RECORDING METHOD OF OPERATION
REC Button: record button, you can press and hold the recording, release the button to stop recording;
PLAYE Key: trigger mode playback, the press will play this whole speech;
PLAYL Key: jog mode playback, press and hold until playback, release to stop playback;
RPL Jumper: loop mode control, loop playback;
FT Jumper: direct control, microphone voice through the speaker can playback;
FEATURES & SPECIFICATIONS
- Push‐button interface, playback can be edge or level activated
- Automatic power‐down mode
- On‐chip 8Ω speaker driver
- Signal 3V Power Supply
- Can be controlled both manually and by MCU
- Sample rate and duration changeable by replacing a single resistor
- Record up to 20 seconds of audio
- Dimensions: 37 x 54 mm
harishankar verma –
As advertised.
As advertised, hard to hear it. Must find an amplifier if you need louder performance.
mohan kumar –
Simple to use once you understand what to do!
The single chip recorders arrived on time. I had used these before, so I had a head-start on setting them up. They can operate on 3.3 to 5 V dc. If you are connecting the output to an amplifier (instead of directly to a speaker) and using the same power supply DO NOT CONNECT THE NEGATIVE SPEAKER OUTPUT WIRE FROM THE RECORDER TO THE AMPLIFIER. If you do an ground loop will likely wipe out your recorder
pooran chand sharma –
Surprisingly good sound for such a small foot print and price.
Surprisingly good sound for such a small foot print and price. It was easy to operate the recorder using the attached buttons or with an Arduino nano. Just be careful not to exceed the required voltage.
akhilesh –
Very intuitive easy to use
Connected The power supply up to it ..pressed the Red button ..spoke into the mic ..pressed play …..and found it worked perfectly !! ..with better-than-expected sound , plus there was another play button for Limited play instead of having to listen to the entire recorded (up to 20 seconds) Loop ..Awesome( …. only 1 con: might be louder
mihir –
Works for my application
Used as a reminder for a young person to lock door . Door activated from reed switch.
anila –
Works great
These work great. They are exactly what I wanted. I wish the cord would have been soldered on already but that’s no big deal. I may purchase more for future projects