Voice Recording Module Kit ABS DIY Sound Recording Board Student Experimental Kits 8?20s

Feature: 1. Enjoy Fun: This kit uses the 8?20 second single segment voice recording and playback circuit ISD1820P, which completes the storage and restoration of voice signals, allowing electronic enthusiasts to experience the fun brought by voice IC and make innovative applications 2. Long Life: The chip of this voice recording kit adopts CMOS technology, and the information can be stored for a long time without power consumption 3. Welding Method: After the welding of this 20 second voice recording kit is completed, can be debugged by itself, and the welding can be successful without any error 4. Basic Specifications: The recording time of the voice recording kit is 8S, 12S, 20S, and the working voltage is DC 3V5V (5V recommended) 5. Best Choice: This is a small and light weight 20 second voice recording kit, which is easy to operate, the best choice for DIY Specification: Item Type: Voice Recording Module Kit Material: ABS Working Voltage: DC 3V5V (Recommended 5V) 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 terminal (REC), high level is valid, as long as the REC becomes high, the chip will start recording, 2 The pin is edge triggered playback (PLAYE), when high level appears on this end, the chip starts to play, and after starts to play, can release PLAYE, pin 13 is the recording indication end (RECLED), when in the recording state, this end is Low, can drive LED, Pins 4 and 5 are connected to the microphone input (MIC), Pin 6 is connected to the automatic gain control (AGC) end, Pins 7 and 9 are connected to the speaker output (SP+, SP), which can directly drive speakers above 8 Ohm , Pin 10 is connected to the oscillating resistor (ROSC), and the oscillating resistor is connected to GND. Adjust the oscillating resistor R4 connected to the ROSC terminal, can steplessly adjust the speed of the voice, 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 can not be adjusted too small, is recommended to be above 100KEnjoy Fun: This kit uses the 8?20 second single segment voice recording and playback circuit ISD1820P, which completes the storage and restoration of voice signals, allowing electronic enthusiasts to experience the fun brought by voice IC and make innova Long Life: The chip of this voice recording kit adopts 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, can be debugged by itself, and the welding can be successful without any error Basic Specifications: The recording time of the voice recording kit is 8S, 12S, 20S, and the working voltage is DC 3V5V (5V recommended) Best Choice: This is a small and light weight 20 second voice recording kit, which is easy to operate, the best choice for DIY