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Review of Mamba shield for Arduino Uno

Review of Mamba shield for Arduino Uno

ABSTRACTThis document analyzes the Mamba shield for Arduino with several experiments of powerlines communications over DC lines and AC lines. Principally, I’ve tried to guess the baud rate that this product can reach without transmission errors. INTRODUCTION Power line communications technology is a way of carrying data on a conductor that can also be used for power transmission. You can use it…
How to Position Fresnel Ambient Light Rejection Screen

How to Position Fresnel Ambient Light Rejection Screen

Fresnel ambient light rejection screen can reject ambient light and improve the contrast of the projection. However, it's critical to position the screen correct without to the projector. Otherwise, the effect will be discounted significantly.Projector can be installed on the table or from the ceiling. So there are two ways to install them.On the table or stand:Projector installed on ceiling:…
Q&A for LinkSprite Doorbell Camera

Q&A for LinkSprite Doorbell Camera

Q1:How to add the doorbell to the APP?A1: App download and configuration method: Search "LinkSprite" in the AppStore(iOS) or PlayStore(Android) and download the app. Open the back cover of the doorbell, and there is a reset button inside. Press and hold it for 5 seconds. There will be a voice prompt “Waiting for configuration”. Tap + on the upper right corner of the app and scan the QR code…
How to access Jovision camera RTSP stream

How to access Jovision camera RTSP stream

The RTSP stream of Jovision camera works as below:rtsp://username:password@IP_address_of_camera:8554/live0.264As an example, we use macbooks’ VLC player:After click open, we will see the live stream out of the camera.…
The introduction of Pelco-D protocol and how to use it to control rotating bracket for security camera

The introduction of Pelco-D protocol and how to use it to control rotating bracket for security camera

What is Pelco-D protocol?Pelco-D is a popular PTZ (Pan/Tilt/Zoom) camera control protocol used in the surveillance industry.Pelco-D consists of 7 hexadecimal bytes.The format is shown in the following table:Byte 1 Byte 2Byte 3Byte 4 Byte 5 Byte 6 Byte 7Sync CameraAddressCommand 1Command 2Data1Data 2ChecksumNote: All bytes are in hexadecimal format in this protocol. Byte 1 -Sync: the synchronizat…