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Voice Record & Playback Module

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Voice Recorder is a device that captures speech (or audio) in various situations like meetings, lectures, interviews, conferences, broadcasts etc. so that you can easily edit or play them back. There are different types of hardware and software dedicated to voice recording that provide several customization options. In this project, I will talk about one of the most commonly used Voice Recorder Modules in the electronics hobbyist community, the ISD 1820 Voice Recorder Module and show you how to control it with the help of Arduino. A Brief Note on ISD 1820 Voice Recorder Module The ISD1820 Voice Recorder Module is based on the ISD1820 IC, which is a single chip Voice recorder IC for single message record and playback. I am not sure about the availability of only the IC but it is frequently found in the module with all the necessary components and circuitry. A major feature of the ISD1820 Voice Recorder Module is that is can store the messages in its non-volatile memory and can be config...
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GPS

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  NEO-6M GPS Module that can track up to 22 satellites and identifies locations anywhere in the world. It may serve as a great launch pad for anyone looking to get into the world of GPS. They are low power (suitable for battery powered devices), inexpensive, easy to interface with and are insanely popular among hobbyists. Hardware Overview NEO-6M GPS Chip At the heart of the module is a NEO-6M GPS chip from u-blox. The chip measures less than the size of a postage stamp but packs a surprising amount of features into its little frame. It can track up to 22 satellites on 50 channels and achieves the industry’s highest level of sensitivity i.e. -161 dB tracking, while consuming only 45mA supply current. Unlike other GPS modules, it can do up to 5 location updates a second with 2.5m Horizontal position accuracy. The u-blox 6 positioning engine also boasts a  Time-To-First-Fix  (TTFF) of under 1 second. One of the best features the chip provides is Power Save Mode(PSM). It all...
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GSM Sim800L

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  Whether you want to listen to what happens in your house that’s miles away from you or activate sprinkler system in your garden just with a silent call; Then SIM800L GSM/GPRS module serves as a solid launching point for you to get you started with IoT! SIM800L GSM/GPRS module is a miniature GSM modem, which can be integrated into a great number of IoT projects. You can use this module to accomplish almost anything a normal cell phone can; SMS text messages, Make or receive phone calls, connecting to internet through GPRS, TCP/IP, and more! To top it off, the module supports quad-band GSM/GPRS network, meaning it works pretty much anywhere in the world. Hardware Overview of SIM800L GSM/GPRS module At the heart of the module is a SIM800L GSM cellular chip from SimCom. The operating voltage of the chip is from  3.4V to 4.4V , which makes it an ideal candidate for direct LiPo battery supply. This makes it a good choice for embedding into projects without a lot of space. All the ...
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