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LTC4121/LTC4121- 4.2 – 40V 400mA Synchronous Step-Down Battery Charger

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LTC4121/LTC4121-4.2 – 40V 400mA Synchronous Step-Down Battery Charger Features Wide Input Voltage Range: 4.4V to 40V Adjustable Float Voltage (3.5V to 18V): LTC4121 Temperature Compensated Input Voltage Regulation for Maximum Power Point Tracking (MPPT) Fixed 4.2V Float Voltage Option: LTC4121-4.2 High Efficiency: Up to 95% 50mA to 400mA Programmable Charge Current ±1% Feedback Voltage Accuracy Programmable 5%

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How to get sensor data from a remote Arduino via Wireless Lora Protocol

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This is an example to show how to get sensor data from a remote Arduino via Wireless Lora Protocol. The exampels requries below hardwares:   1) Client Side: Arduino + Lora Shield (868Mhz) + DS18B20 (Temperature Sensor). 2) Server Side: Arduino + Lora Shield (868Mhz) + Yun Shield + USB flash. make sure the USB

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Silicon Substrate LEDs Address High 1

LIN Protocol — One Wire Protocol for Automotive Applications

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With the host of protocols available in electronics interfaces, choosing a protocol is a hard job. Some protocols are designed for long distance and reliable communication applications such as RS-485. Others are used for low cost and short range communication such as I2C, and so on. The backbone car’s network is the Controller Area Network

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Soundlazer SNAP The Directional Parametric Speaker

Soundlazer SNAP – The Directional Parametric Speaker

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The Soundlazer directional audio project is the follow-up to my initial and highly successful project on Kickstarter. During my efforts to reduce the price of this incredible technology, I created the Soundlazer “Snap” to enable supporters to discover fresh options in directional audio. Directional speaker systems such as the Soundlazer are known as parametric speakers.

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OV7670 Camera Module DIY Guide

OV7670 Camera Module DIY Guide

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Here we introduced one OV7670 camera module just purchased online, including the communication of camera module and Arduino UNO, the using ways to take photo via camera module, and so on. This is an Arduino camera module,  adopted the Surveillance cameras digital image processing chip-OV0706, specially designed for image acquisition and processing application,  based on TTL

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