ISD1820 Recording Module Voice Board, Audio Amplification DIY Loose Parts Kit

is_customized : YesModel Number : newOperating Temperature : newDissipation Power : newSupply Voltage : newApplication : TVCondition : NewType : Logic ICs : Mainland China
ISD1820 recording module, voice board, voice module, recording and playback of audio tape, sound amplification, DIY spare parts kit??Please use a 5V regulated power supply or switch power supply, do not use a USB port power supply or charger for power supply. The sound quality of the latter two power supplies will be poor, possibly due to the high noise of these two power sources. Many people buy a household charger or USB port power supply, which says the sound quality is poor. Please change the power supply.?A module that can record and play audio without the need for microcontroller control?1. On board ISD1820 chip;2. Working voltage: 3-5 V;3. Natural voice restoration, which can be used as a Megaphone module;4. With loop playback, jog playback, and single pass playback functions;5. Size: 4.1 * 6.1CM;6. The recording time varies with the sampling frequency:?For example, when using a 100K resistor as the oscillation resistor, the recording time is 10S; When using a 160K resistor as the oscillation resistor, the recording time is 16S; In order to improve the sound quality, this module uses an 82K resistor as the oscillation resistor, so the recording time is 8.2S;?7. Recording and playback of audio can be achieved without the need for a microcontroller, and it can also be controlled by a microcontroller.?After multiple revisions, the circuit diagram has been improved and updated. If a filtering capacitor is added to the recording on, it can prevent voice clearing caused by misoperation of the recording on due to power interference. When recording ISD1820, the voice will be automatically overwritten. If the recording on malfunctions, the voice inside will be cleared?Instructions for use:?Power supply: 3-5 V, can be supplied on the pin or DC socket, and the DC socket is internally positive and externally negative;Recording and playback control method: on control or microcontroller, and the control expansion port on the board is used by the microcontroller;on control recording and playback operation method:REC key: Record on, press and hold to record, release the on to stop recording;RLAYE key: Trigger mode playback, press once to play the current entire voice segment;PLAYL key: Jog mode playback, press and hold to play, release to stop playing;Toggle switch:RPL toggle switch: loop playback mode control, located at the 0N end for loop playback;FT toggle switch: controlled by a direct module, located at the ON end, the microphone's voice directly connects to the speaker;Horn connection method:This module has 2 speaker interfaces, SP1 and SP2SP1 is the audio output directly from the chip, while SP2 is the speech amplified by LM386.?The volume of SP2 is adjusted by the blue and white adjustable Potentiometer on the board. Place as shown in the above image and rotate clockwise to increase the volume.?SP2 is mainly used when playing recordings. It is ideal to amplify the recording sound. If you connect the speaker to SP2 in the straight through mode, please separate the speaker from the microphone, such as the one used by banks, which is separated by the middle glass, or extend the distance between the speaker and the microphone, otherwise the speaker will howl due to Self-oscillation.?Therefore, although there is audio amplification on the board, this module is not suitable for the Megaphone when selling cabbages. Simply put, the SP2 interface is mainly used to amplify playback recordings, rather than amplify shouting sounds.?The board is equipped with a power amplifier, which can drive an 8W big speaker. The sound and sound quality are both good. Of course, it can also drive a small speaker. There is a volume adjustment Potentiometer on the board.???List of modules shipped after welding testing:1. One ISD1820 module (including ISD1820P voice chip);2. One horn connection line;DIY bulk shipment list:PCB board 114P IC holder 1ISD18201Half needle 18P IC holder 1LM3861100UF50V capacitor 44.7UF50V capacitor 147UF 25V capacitor 1DC0051XH2.54-2 seats 24.7 Ohms (or 10 Ohms) Resistance 11K resistor 34.7K resistor 282K resistor 11N400716 * 6 on 3Toggle switch 23MM LED2104 ceramic capacitor 5102 ceramic chip capacitor 1104 blue and white adjustable resistor 1Mitou 1XH2.54-2P Line 1??Welcome to our shop, enjoy the shipping here, you can contact with me freely if any question, usually we will send datasheet,e via email . hope to do business with youpayment:we only accept the payment by credit card,western union.We apologize that we cannot accept other payment methods, such as cheque or postal orders .Shipping:We Ship to Worldwide, but Italy, Nigeria, Brazil will take delivery time .Before buying, Please make sure your address is correct. Or not, please correct it before paymentShip to worldwide from Hong Kong within 12-24 hours after payment completed received, and will give you?the tracking numberasap. sometimes we will send it by flat post air mail if just one low price order.Hope you understand.we advise shipping by?DHL or EMS,and we have gave a discount for you,you can received it in?4-9 business days.it takes about?15-30days?usually if shipping by?CHina/Hong Kong post air mailFeedback:the feedback is very important for us, pls leave me a 5 stars feedback if you are satisfied with our service and our items,or pls contact with me if there are some problem with our items.we will solve it asap.Warranty and Return:12-months Warranty for defective items (excluding items damaged and/or misused after receipt).Buy with confidence or replacement request is available only the requests within 1 week after parcel received & returning the item as the same condition as received.Please contact us to request a return authorization. Your name, auction number, and reason for return should be included in the email. All items returned must contain all packaging materials.Please repack the item carefully. Items returned will be tested and a new replacement will be shipped to the buyer immediately when found defective. In the event that a suitable replacement is not available then a will be issued. Shipping, handling and insurance fees are non able.Return shipping is to be paid by the Buyer.ABOUT US:we have much more products, pls contact us if you need.welcome to wholesale. MUCH THANKS!!