Feature

●Enjoy fun: this kit uses the 8-20 second single-segment voice recording and playback circuit ISD1820P, which completes the storage and recovery of voice signals and allows electronics enthusiasts to experience the fun that voice IC brings, and develop innovative applications
●Long service life: the chip of this voice recording kit uses CMOS technology and the information can be stored for a long time without power consumption
●Welding method: after the welding of this 20 second voice recording kit is completed, it can be debugged by itself and the welding can be successful without errors
●Basic specifications: the recording time of the voice recording kit is 8S, 12S, 20S and the working voltage is DC 3V-5V (5V recommended).
●Best choice: this is a small and lightweight 20 second voice recording kit, which is easy to use and is the best choice for DIY enthusiasts


Description

Specification:
Item Type:Voice Recording Module Kit
Material: ABS
Operating voltage: DC 3 V - 5 V (recommended 5 V).
Recording time: 8S, 12S, 20S.
Circuit pin function: pin 11 is the positive pole of the power supply (VCC), pins 8 and 14 are connected to the negative pole of the power supply (GND), pin 1 is the recording port (REC), high level is valid, as long as REC gets high, the chip starts recording, 2 The pin is edge triggered playback (PLAYE), when at this end a High level appearappear, the chip starts playback and then starts playback, can release PLAYE, pin 13 is the end of the recording display (RECLED), in the recording state this end is low, can control LED, pins 4 and 5 are connected to the microphone input (MIC), pin 6 is connected to the end of the automatic gain control (AGC) the pins 7 and 9. with the speakeroutput (SP+, SP-), which can directly control the speaker via 8 Ω. Pin 10 is connected to the oscillation resistance (ROSC) and the oscillation resistance is connected to GND. Adjust the vibration resistor R4 connected to the ROSC connector to adjust the speed of the voice continuously. The shorter the recording time, the better the sound quality, and the longer the recording time, the worse the sound quality

Package list:
1 x voice recording module kit.

Note:
The resistance cannot be adjusted too small, it is recommended to be above 100 K.