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An FPV camera module Video transmitter 👉 Video transmitter takes the analogue signal from the camera and sends it out through an omnidirectional antenna. 👉 As the video transmitter is typically designed to work in one of several frequency bands, usually a channel selector switch is provided on the transmitter to set the exact frequency for video signal transmission.

FPV Drone Video camera 👉 FPV cameras use either an inexpensive complementary metal-oxide-semiconductor (CMOS) or a bit pricey charge-coupled device (CCD) image sensor. 👉 The image sensor of the camera fundamentally affects its performance. 👉 Also note that a camera with a wide input voltage range offers flexibility when wiring the FPV system.

FPV cameras for drones FPV system First-person view, also called video piloting, means flying the drone from the perspective of a true pilot by using an onboard video camera and wireless downlink.

WHEN WILL 8K TVS BECOME READILY AVAILABLE? 👉 Ready or not, 8K TVs are now here.  👉 Samsung, which already had an 8K model in 2018, has announced the availability of its 2019 QLED TVs, which include the Q900, an 8K model that’s available in sizes ranging from 65 to 98 inches, with prices that start at just $5,000. 👉 LG, for its part, has announced it will soon start selling OLED and LED TVs with 8K resolution, though prices have yet to be announced.   👉 Sony’s 8K Z9G series will be available in 85- and 98-inch sizes.. 👉 TCL showed off an 8K Roku TV that is widely expected to be available this year — likely at a price that will make it the most affordable 8K TV on the market.

8K is absolutely noticeable on larger displays, especially up close.

8K TV: The future of television WHAT IS 8K? 👉 If you use basic math, it may seem like 8K would provide double the resolution of 4K, but that isn’t the case. 👉 Since we’re talking two dimensions here — horizontal lines and vertical lines — it’s actually a whopping 16 times the pixels of HD and four times the pixels of 4K: 8K resolution equates to 7,680 × 4,320, or 33 million pixels (33,117,600, to be exact), instead of 3,840 × 2,160 (8,294,400 pixels). 👉 To more easily visualize it, imagine four 4K TVs placed in a four-by-four grid. That is a lotof pixels.

How to unzip ? 👉 You can do that with the * operator. Let's convert our mapping variable back to its components. 👉 x,y = zip(*mapping) print(x) print(y) >> (1,2,3) >> (4,5,6)

Power of zip() in Python 3 👉 zip() allows you to map the same index of multiple iterables. 👉 Syntax: zip(*iterables) 👉 Example : x = [1, 2, 3] y = [4, 5, 6] mapping = zip(x, y) print(mapping) >> 👉 print(list(mapping)) >> [(1, 4), (2, 5), (3, 6)]

If anyone has done any DIY projects or any kind of embedded projects, so send it to us.. we will post it in our channel..

How to Use MQTT in Home Automation and IoT Projects 1) Set up your Raspberry Pi. 2) Enable and Connect your Raspberry Pi with SSH. 3) You need Node-RED installed on your Pi and Node-RED Dashboard. 4) Install the Mosquitto broker on the Raspberry Pi. 5) Add the ESP8266 or the ESP32 to this system

MQTT – Broker 👉 The broker is primarily responsible for receiving all messages, filtering the messages, decidewho is interested in them and then publishing the message to all subscribed clients. 👉 There are several brokers you can use. In home automation projects we use the Mosquitto broker which can be installed in the Raspberry Pi. Alternatively, you can use a cloud MQTT broker.

MQTT – Topics 👉 Topics are the way you register interest for incoming messages or how you specify where you want to publish the message. 👉 Topics are represented with strings separated by a forward slash. 👉 Each forward slash indicates a topic level. 👉 Above is an example on how you would create a topic for a lamp in your home office. 👉 Note: Topics are case-sensitive.

MQTT – Messages Messages are the information that you want to exchange between your devices. Whether it’s a command or data.

👉 In a publish and subscribe system, a device can publish a message on a topic, or it can be subscribed to a particular topic to receive messages. 👉 For example  Device 1 publishes on a topic. Device 2 is subscribed to the same topic as device 1 is publishing in. So, device 2 receives the message.

MQTT Basic Concepts Publish/Subscribe Messages Topics Broker

What is MQTT and How It Works 👉 MQTT stands for Message Queuing Telemetry Transport. 👉 It is a lightweight publish and subscribe system where you can publish and receive messages as a client. 👉 MQTT is a simple messaging protocol, designed for constrained devices with low-bandwidth. So, it’s the perfect solution for Internet of Things applications.  👉 MQTT allows you to send commands to control outputs, read and publish data from sensor nodes and much more. 👉 Therefore, it makes it really easy to establish a communication between multiple devices.

Regression Testing is defined as a type of software testing to confirm that a recent program or code change has not adversely affected existing features.