Ecompass LLP

QAV 250 Fibre FPV Quadcopter Multicopter Frame [Random Designs]

The Q250 is a mini-size quadcopter frame. This frame is built specifically to tackle the problems in FPV Racing and video recording with quadcopters. It is known for its toughness and durability.

This Q250 Quadcopter Fiber is manufactured with excellent quality Fiber for making it more sturdy and strong, hence we call it fiber Q250 Quadcopter Frame. This Quadcopter Frame has incredible strength and reduced weight. 

Carbon fiber is mostly accepted material for frame designing because of its high stiffness to weight ratio. The Carbon Fiber Frames are very rigid and improve stability and flight performance.

The Q250 Carbon Fiber Quadcopter Frame is lightweight and possesses thick arms, so as to give them good mechanical strength. The mini-size design of this quadcopter frame makes it aerodynamically efficient which will require lower throttle to hover. The design allows the whole take-off weight to be controlled at about 500-600 grams!!!! Great!!!!!

The Q250 Carbon Fiber Quadcopter Frame has the wheelbase of 250mm and weighs around 150gm. It features a very large area on the mainframe for mounting cameras and other accessories. This frame supports 37mm board cams as well as cams in cases with mounting brackets.

It’s longer top and bottom plate allow easy mounting of HD cameras and batteries. so more spacious room for all kinds of electronics!!!

The Q250 Carbon Fiber Quadcopter Frame equips anodized alloy spacers. The arms of this carbon fiber frame feature multiple motor mounting holes so as to fit a variety of motors. It equips vibration-free mounting bracket for housing the camera on the frame.

TDT-3S-8307A 3S 20A 11.1V Li-Ion/NMC Battery Management System (BMS)

The TDT Li-ion NMC 3S 11.1V 20A Battery Management System (BMS) is an advanced protection circuit tailored for 3-series Li-ion/NMC battery packs (11.1V nominal). Built using the CM1031-DT IC and 3080K MOSFETs, this compact and durable module ensures battery safety and performance with intelligent overcharge, over-discharge, short circuit, and current protection.

The TDT-8307-3S is ideal for high-efficiency battery applications such as e-bikes, drones, tools, and portable devices. Simple wiring and robust construction make it suitable for both DIY users and professional integrators, ensuring long-lasting operation and safety in demanding environments.

Features:

1. Supports 3S 11.1V Li-ion/NMC battery packs
2. 20A max continuous discharge/charge current
3. Advanced overcharge/over-discharge protection
4. Over-current and short-circuit protection
5. Temperature protection for discharge (65–75°C)
6. High-precision voltage balancing (4.19 V ± 0.05 V)
7. Low power consumption (≤60 μA)

RPi 5 Raspberry Pi 5 4GB

Greetings, Raspberry Pi enthusiasts! It’s official—the Raspberry Pi 5 has arrived!

Welcome to the cutting-edge Raspberry Pi 5 Model 4/8GB, the latest generation of this iconic computing marvel. Packed with a 64-bit quad-core Arm Cortex-A76 processor clocked at 2.4GHz, the Raspberry Pi 5 boasts an impressive 2–3× increase in CPU performance compared to its predecessor, the Raspberry Pi 4.

Not stopping there, it delivers a substantial boost in graphics power thanks to its 800MHz VideoCore VII GPU, supports dual 4Kp60 display output via HDMI, and offers state-of-the-art camera capabilities courtesy of a reimagined Raspberry Pi Image Signal Processor. It promises a seamless desktop experience for consumers and opens new horizons for industrial applications.

Take a moment to explore the upgrades introduced by the Raspberry Pi Foundation in this brand-new generation of the Raspberry Pi 5 Model 8GB pocket computer. Building upon the significant hardware enhancements of the Pi 4, the Pi 5 comes equipped with a host of hardware and software improvements outlined below.

Waterproof Measuring Transducer Sensor Ultrasonic Distance Sensor Module RCWL-1655

This ultrasonic sensor is very similar to the ultrasonic sensors which are found in cars. This Waterproof Ultrasonic Obstacle Sensor shows some important constructional advantages over conventional sensors. It comes in two separate parts one being the transducer which is the sensing element and the other being the control board.

The module is capable of providing information of the objects between the distance range of 250 mm to 4500 mm. The great advantage of using this Waterproof Ultrasonic Obstacle Sensor is you can put the sensing element far away from all the control circuitry.

This Ultrasonic Distance Sensor is an industrial-grade sensor to measure distance. Interfacing with it is the same as another cheap ultrasonic sensor, but it offers better performance and is compatible with harsher environments and is waterproof too! It can be easily interfaced with Arduino and Sample codes and projects are available.

There are many ultrasonic distance sensors on the market, but sometimes, this kind of sensor needs to work in vulnerable conditions. This Waterproof Ultrasonic Obstacle Sensor meets this requirement. It has a good performance and almost the same usage of an HC-SR04 module.

It is very easy to use, a control port with a 10US above high level can wait for high-level output at the receiving port. An output can drive the timer when this port is low can read the timer value, this time for the location of the time can be distance measurement. Constantly cycle tests that can achieve the measurement of the value of your mobile.

The basic working principle:

1. Turn on TRIG Pin to 5V for at least 10uS
2. The module will then automatically send 8 40KHz tones and automatically detect when the signal return after reflecting back from the object
3. Upon detecting the signal, a high-level signal is outputted through the IO Pin ECHO. By keeping track of the time duration between transmitting and receiving the signal, the distance can be calculated. Distance = (Time to Receive Reflected Signal * speed of sound (340M/S)) /2

Wiring

+5V(positive)

Trig(control)

Echo(receive)

GND(negative)

Application :

1. Horizontal distance
2. Obstacle avoidance, automatic control
3. Traffic control
4. Security, industrial control
5. Artificial intelligence, and research.

Features:

1. Small size, easy to use.
2. Low voltage, low power consumption.
3. High accuracy.
4. Strong anti-jamming.
5. Integrated with wire enclosed waterproof probe, suitable for wet, harsh measurement occasions.

IR Sensor Light Switch Auto On/Off on Door Opening and Closing

You can use IR Sensor Light Switch (Auto On/Off on Door Opening and Closing) in wardrobes, cabinets, rooms, and other places. It is a short distance IR sensor. The sensor detects an obstacle in range. If anything is present within range (around 5-6cm), Lights gets turned off until the door is closed or the obstacle is present in the detection range.

SPECIFICATION

Soil Moisture Sensor Module FC-28 with LM293

This is Soil Moisture Meter, Soil Humidity Sensor, Water Sensor, Soil Hygrometer for Ardunio. With this module, you can tell when your plants need watering by how moist the soil is in your pot, garden, or yard. The two probes on the sensor act as variable resistors. Use it in a home automated watering system, hook it up to IoT, or just use it to find out when your plant needs a little love. Installing this sensor and its PCB will have you on your way to growing a green thumb!

The soil moisture sensor consists of two probes which are used to measure the volumetric content of water. The two probes allow the current to pass through the soil and then it gets the resistance value to measure the moisture value.

When there is more water, the soil will conduct more electricity which means that there will be less resistance. Therefore, the moisture level will be higher. Dry soil conducts electricity poorly, so when there will be less water, then the soil will conduct less electricity which means that there will be more resistance. Therefore, the moisture level will be lower.

Wiring Connection

VCC: 3.3V-5V
GND: GND
DO: Digital output interface(0 and 1)
AO: Analog output interface

Features :

1. Dual output mode, analog output more accurate
2. A fixed bolt hole for easy installation
3. With power indicator (red) and digital switching output indicator (green)
4. Having LM393 comparator chip, stable.

Capacitive Sensor Module for Arduino

This capacitive soil moisture sensor is different from most of the resistive sensors on the market, using the principle of capacitive induction to detect soil moisture. The problem that the resistance sensor is easy to be corroded is avoided, which greatly prolongs its working life.

The sensor has a built-in voltage-stabilizing chip that supports a 3.3-wide voltage operating environment, which means it can work even on a 3.3-V Arduino master board. A miniature PC like a raspberry pi only needs an ADC (analog to digital) conversion module to work.With a screen and a motherboard, you can talk to your plant. To see if your beloved is thirsty, do you need more water to moisten it?
Specifications of Capacitive Soil Moisture Sensor:

• Working voltage: 3.3 VDC
• Output voltage: 0 ~ 3 VDC
• Interface: PH2.54-3P
• Size: 98 x 23mm (LxW)

Package included:1 x Soil moisture sensor & 3Point JST+Dupoint cable

Description

This is a Bluetooth audio receiver module, which means it can receive the audio signal of MP3 and other popular formats. It's very easy to connect and operate, and once connected to the other Bluetooth device like your phone or laptop etc. it can receive the signal and convert it into the output form which is compatible with the speakers. It has 3 output terminals  L Out, R Out and GND to which you can directly connect your wired earphone using a 3.5mm female jack or if you want to drive a big speaker you can connect its output to the input of a good amplifier system. It can be used to drive the

Feature:

1. Bluetooth3.0 with audio signal decoding feature.
2. The output is directly compatible with the amplifier.
3. Very less weight and small size form factor make it easily fits into any application area.
4. Can be used to Design your own wireless music system
5. Low power consumptions

Specification:

1. Weight:  0.003Kg
2. LxBxH:   22mx13mmx3mm

Package includes:

1x 5V Bluetooth Audio Receiver Module 3.0BT

Ultra Sonic Distance Sensor Module (HC-SR04)

• Measures the distance within a wide range of 2cm to 400cm
• Stable performance
• Accurate distance measurement
• High-density
• Small blind distance

The Ultrasonic Sensor HCSR04 module is a transmitter, a receiver and a control circuit in one single module. It offers an excellent range of accuracy and stable readings in an easy-to-use package. Also, its operation is not affected by sunlight or black material like Sharp rangefinders are (although acoustically soft materials like cloth can be difficult to detect).
The Trigger and the Echo pins are the I/O pins that can be connected to the I/O pins of the microcontroller/Arduino. It needs 10 us high-level signal at least Module will send eight 40kHz square waves automatically and will test if there is any signal returned. If there is a signal returned, the output will be high-level signals via IO port ECHO. The duration of the high-level signal is the time from the transmitter to receiving the ultrasonic. Testing distance = duration of high-level sound velocity (340m/s) / 2 You can use the above calculation to find the distance between the obstacle and the ultrasonic module.

EM 18 RF ID Reader ModuleRadio-frequency identification (RFID) is the wireless non-contact use of radio-frequency electromagnetic fields to transfer data, for the purposes of automatically identifying and tracking tags attached to objects. The tags contain electronically stored information. This EM-18 RFID Reader is a Tiny, simple to use RFID reader module. With a built in antenna, the only holdup is the 2mm pin spacing. Power the module, hold up a card, and get a serial string output containing the unique ID of the card. It has TTL output.

Specifications and Features of EM-18 RFID Reader Module:-

• Operating Voltage: 5V DC Supply
• Reading Distance: 6-10 cm.
• Read frequency: 125 kHz.
• EM4001 64 – bit RFID tag compatible.
• 9600bps ASCII output.
• Current : <50 mA
• Operating Frequency : 125 Khz
• Read Distance : 5 cm
• Compatible Tags : 125KHz EM4100 Tags
• Size : 32mm(length) * 32mm(width) * 8mm(height)

Application of EM-18 RFID Reader Module:-

• Smart Access Control System.
• Card Based Entry System.
• Attendance System.
• DIY projects requiring need for RFID based System

 

* Product Images are shown for illustrative purposes only and may differ from actual product.

LM 35 Temperature Sensor with Analog Output

LM35 is an integrated analog temperature sensor whose electrical output is proportional to Degree Centigrade. LM35 Sensor does not require any external calibration or trimming to provide typical accuracies. The LM35’s low output impedance, linear output, and precise inherent calibration make interfacing to readout or control circuitry especially easy.

As such no extra components required to interface LM35 to ADC as the output of LM35 is linear with 10mv/degree scale. It can be directly interfaced to any 10 or 12 bit ADC. But if you are using an 8-bit ADC like ADC0808 or ADC0804 an amplifier section will be needed if you require to measure 1°C change.

LM35 can also be directly connected to Arduino. The output of LM35 temperature can also be given to comparator circuit and can be used for over temperature indication or by using a simple relay can be used as a temperature controller.

The LM35 device is rated to operate over a −55°C to 150°C temperature range, while the LM35C device is rated for a −40°C to 110°C range (−10° with improved accuracy). The LM35-series devices are available packaged in hermetic TO transistor packages, while the LM35C, LM35CA, and LM35D devices are available in the plastic TO-92 transistor package. The LM35D device is available in an 8-lead surface-mount small-outline package and a plastic TO-220 package.

LM 35 TEMPERATURE SENSOR MODULE WITH ANALOG OUTPUT

This LM35D Analog Temperature Sensor Module is based on the semiconductor LM35 temperature sensor. The LM35 Linear Temperature Sensor module is useful in detecting ambient air temperature. Sensitivity is 10mV per degree Celsius. The output voltage is proportional to the temperature.

LM35 is a precision IC temperature sensor with its output proportional to the temperature (in °C). The sensor circuitry is sealed and therefore it is not subjected to oxidation and other processes. With LM35, the temperature can be measured more accurately than with a thermistor!!!

It also possesses the low self-heating and does not cause more than 0.1 °C temperature rise in still air. The operating temperature range is from -55°C to 150°C. The output voltage varies by 10mV in response to every °C rise/fall in ambient temperature, i.e., its scale factor is 0.01V/°C.

It is commonly used as a temperature measurement sensors. It includes thermocouples, platinum resistance, thermal resistance and temperature semiconductor chips, which commonly used in high-temperature measurement thermocouples.

Wiring Instructions:

“+”: Positive power supply

“–“: Negative one

“out”: pick AD converter module analog signal input terminal or directly connected to the multimeter to measure

36W Short Range IR Hand Wave ON-OFF Sensor Module LZG-HW-V9

This is IR sensor-based switching module that functions ON and OFF  by sweeping palm over it from 10 to 80 mm distance.
This IR sensor can be used in a variety of applications in household appliances as well as automotive industrial applications.  The sensitivity of the product can be customized, can penetrate plastic, acrylic, glass, ceramic, and another non-metallic medium, stable performance!

Digital LDR Photo Resistor Module

The Digital LDR Module is used to detect the presence of light / measuring the intensity of light. The output of the module goes high in the presence of light and it becomes low in the absence of light. The sensitivity of signal detection can be adjusted using the potentiometer.

Use it to detect the light brightness in your environment and decide to switch OFF or ON light. Or maybe adjust the brightness of the LED of your house?

You can adjust the threshold (sensitivity) of the digital output by tuning the onboard variable resistor (potentiometer). Simple usage as it is the digital output, so you will know the light present and decide what to do with it.

It comes with an M3 mounting hole for ease of attaching it to an object. Onboard, it provides an LDR, high sensitivity and commonly being used for light detection. The module comes with a power LED and a status LED as an indicator.

LDR Module Photosensitive resistor module most sensitive to environmental light intensity is generally used to detect the ambient brightness and light intensity.

How it works

1. Module light conditions or light intensity reach the set threshold, DO port output high when the external ambient light intensity exceeds a set threshold, the module D0 output low;
2. Digital output D0 is directly connected to the MCU, and detect high or low TTL, thereby detecting ambient light intensity changes;
3. Digital output module DO  can directly drive the relay module, which can be composed of a photoelectric switch.

Pin details

VCC ↔ 3.3V to 5V DC.
GND ↔ Ground.
DO ↔ Digital Output.

Features :

1. LM393-based design.
2. It can detect ambient brightness and light intensity.
3. Adjustable sensitivity (via blue digital potentiometer adjustment).
4. Output Digital – 0V to 5V, Adjustable trigger level from preset.
5. LEDs indicating output and power.

Mini Type C Micro USB TP 4056 1A Charging Module: Efficient Charging Solution for 18650 18500 3.7 Volt Lithium Ion Batteries

The TP4056 is a commonly used lithium-ion battery charging module designed to charge single-cell lithium-ion or lithium-polymer batteries with a nominal voltage of 3.7V. It's widely utilized in various electronic devices and DIY projects due to its simplicity, efficiency, and affordability. The "1A" in its name indicates that it supports a charging current of up to 1 ampere (1000 milliamperes), which is suitable for charging batteries with different capacities. Typically, the input voltage can range from 4.5V to 5.5V DC. This makes it compatible with standard USB power sources.

Now, let's discuss the types or variants of TP4056 charging modules:

1. Basic TP4056 Module: This is the most common type of TP4056 module available in the market. It features the TP4056 charging IC, a few passive components such as resistors and capacitors, and typically includes a micro USB port for input power and battery terminals for connection to the lithium-ion battery. These basic modules often have a single onboard LED indicator to display the charging status.

2. TP4056 Module with Protection: Some TP4056 modules come with additional protection features to enhance safety during charging. These protection features may include overcharge protection, over-discharge protection, short-circuit protection, reverse polarity protection, and temperature protection. Modules with protection circuits are preferred for applications where safety is a primary concern.

IR Sensor Module – Infrared Proximity Sensor

Infrared Obstacle Avoidance IR Sensor Module has a pair of infrared transmitting and receiving tubes. When the transmitted light waves are reflected back, the reflected IR waves will be received by the receiver tube. The onboard comparator circuitry does the processing and the green indicator LED comes to life.

The module features a 3 wire interface with Vcc, GND, and an OUTPUT pin on its tail. It works fine with 3.3 to 5V levels. Upon hindrance/reflectance, the output pin gives out a digital signal (a low-level signal). The onboard preset helps to fine-tune the range of operation, effective distance range is 2cm to 80cm.

– Onboard LED indicates if the module is connected properly
– Another onboard LED indicates when threshold values are touched (turns on)
– Great for DIY projects and Arduino beginners
– M3 Mounting holes to mount the module on your desk or project
– Proximity range up to 7 centimeters depending on the obstructing object and surrounding environment.

 

Interface Description (3-wire):

1. VCC: external 3.3V-5V voltage (can be directly connected to 5v MCU and 3.3v MCU)

2. GND: GND External

3. OUT: small board digital output interfaces (0 and 1)

 

PH Sensor Module For Arduino (only Module, No Electrode)

If you are want to Build a circuit where you can detect the ph factor of liquid, whether it is basic or alkaline. This is a Liquid pH Value Detection Sensor for Arduino. This is used in water quality testing and Aquaculture

The pH stands for the power of hydrogen, which is a measurement of the hydrogen ion concentration in the body. The total pH scale ranges from 1 to 14, with 7 considered to be neutral. A pH less than 7 is said to be acidic and solutions with a pH greater than 7 are basic or alkaline.

The PH electrode has a single cylinder that allows direct connection to the input terminal of a pH meter, controller, or any pH device which has a BNC input terminal. The pH electrode probe is accurate and reliable that can give almost instantaneous readings.

Connection Diagram of Liquid pH Value Detection Sensor for Arduino:

Magnetic Control Module Reed Switch Sensor 

This module can be applied in Program-controlled switches, copiers, washing machines, refrigerators, cameras, Disinfection cabinets, doors, window magnetic, electromagnetic relays, electronic weighing, level meters, gas meters, water meters, and so on.

Specifications and Features:

1. Clean, good waveform driving ability, more than 15mA.
2. Working voltage 3.3V-5
3. Output format: digital switching output (0 and 1)
4. A  fixed bolt hole for easy installation
5. PCB size: 3.2cm x 1.4cm
6. Digital output using a voltage LM393 comparator IC

Package Includes:

1 x Reed Switch Module

DS18B20 Temperature Sensor Module For Arduino

DS18B20 Temperature Sensor Module is a digital temperature sensor, and you can easily connect it to Arduino with only one 4.7-pound resistor, base 1 – Ground 2 – Output – Base 3 to the positive of the source, with resistance to base 2 Is connected. The connection of this sensor to the Arduino via the 1-wire protocol is established. Therefore, several sensors can be connected only through one common wire to Arduino. The output is digitally accurate to 12 bits. Therefore, the temperature can be measured with a precision of 0.0625 º C.

Applications:
DS18B20 Temperature Sensor is suitable for the cold storage, granaries, storage tanks, telecommunications room, electric power room, cable trough, and other temperature measurement and control areas; bearing, cylinder, textile machinery, air conditioning, and other small space industrial equipment temperature and control; , Refrigerator, freezer, and low-temperature drying oven, etc. heating/cooling pipe calorie measurement, central air conditioning household thermal energy measurement and industrial temperature measurement and control and Many more..Features:

1. Digital signal output
2. 18B20 Temperature Sensor Chip
3. Resolution adjustment ranges from 9-12 bytes.
4. Send data via a pin
5. Temperature measurement ranges: -55°C to +125°C, be accurate to 0.5°C.

Liquid Level Sensor Depth of Detection Water Sensor for Arduino

The Water Level Depth Detection Sensor for Arduino has Operating voltage DC3-5V and Operating current less than 20mA. The Sensor is the Analog type which produces analog output signals according to the water pressure with its Detection Area of 40x16mm.

The Water Level Sensor is an easy-to-use and cost-effective with high level/drop recognition sensor by having a series of parallel wires exposed traces measure droplets/water volume in order to determine the water level.

Easy to complete water to analog signal conversion and output analog values can be directly read Arduino development board to achieve the level alarm effect.

1. Operating voltage: DC3-5V
2. Operating current: less than 20mA
3. Sensor Type: Analog
4. Detection Area: 40mmx16mm
5. Operating temperature: 10℃-30℃
6. Humidity: 10% -90% non-condensing

Water Flow Sensor YF-S201 Flowmeter

• Arduino Compatible
• Operating current: 15 mA (DC: 5V)
• Working voltage range: DC 5~18V
• Operating humidity range: 35%~90%RH (no frost)
• Temperature: -25~+80 C

This is YF-S201 Water Flow Measurement Sensor with 1-30Leter/min Flow Rate in black color. This sensor sits in line with your water line and contains a pinwheel sensor to measure how much liquid has moved through it. There’s an integrated magnetic hall effect sensor that outputs an electrical pulse with every revolution. The hall effect sensor is sealed from the water pipe and allows the sensor to stay safe and dry.

By counting the pulses from the output of the sensor, you can easily calculate water flow. Each pulse is approximately 2.25 milliliters.