Elektronikus összetevők

AHT20 BPM280 temperature, humidity and air pressure module
product description
This product adopts the new digital temperature and humidity sensor AHT20 and Bosch BPM280 composed of Aosong, I2C mainstream output,
Support simultaneous online access to multiple I2C electronic devices or modules, voltage DC2.8V-5V can be used, voltage adaptation
Easy, low power consumption, simple circuit, accurate temperature measurement points. The transmission speed is stable and fast. PCB size length and width
16MM*16MM, small size. Use 4P GROVE rehearsal cable connection, which is convenient for users to use quickly,
PCB module size: 16MM*16MM*1MM Working voltage: recommended DC2.0V~5V

ESP8266-12F is an enhanced version ESP8266-12, improve peripheral circuits, four plate board technology, enhanced impedance matching, the signal output is better, whether it is stable or anti-jamming capability, PCB antenna through specialized laboratory testing, a perfect match after ROHS certification, have been greatly improved! For users before selecting the ESP-12, it does not matter even if the product has been made, enhanced version is fully compatible with previous firmware, the pin has added the ESP-12 on the basis of six IO ports, SPI mouth leads, develop more convenient, application more extensive!
 
 
 

 
 
description:
 
     
Object is sensed output 0, output 1 is not sensitive to the time, directly with 3V and 5V microcontroller IO port connected.
Sensing distance 2-40 cm, distance, good anti-jamming capability. (Note: The infrared sensor can not detect all objects get the same distance, objects of different colors of light reflectance of different objects closer darker black shorter distance detected, the sensor 2-40 cm is measured against the white wall of)
Speed, suitable for smart car obstacle avoidance, black and white line tracking, anti-drop, product counters, cutting lines, liquid level detection.
This sensor is made with black and white lines tracing the car ran without black line on white paper, available in concrete The yellow complex environment such as the black line patrol track. As long as the black line around the slightly lighter color than black can, eliminating the traditional moves, so that environmental layout easier.
The sensor 3 to 6V supply, wide range, suitable for 3V and 5V MCU system.
With Enable, EN terminal is equal to "1" when the sensor does not work, equal to "0" when working. Jump on the sensor end cap long after the EN grounding plug (EN long as "0"). To use the EN pin when the jumper cap is removed.
Frequency adjustment potentiometer is used to adjust the carrier frequency of the infrared emission tube, because the integration receiver 38KHZ in particular when the carrier frequency is the most sensitive. The 502 resistor clockwise transferred do (that is, the launch tube at maximum brightness), and then at a white wall tone 103 resistance, has been transferred to the sensing distance is the farthest so far so that the sensor will work in the best state
Working voltage: DC 3.3V-5V
Working current: 20mA
Working temperature: -10degree 50degree
Detection distance : 2-40cm
IO interface: 4 line (-/ /S/EN)
Output signal: TTL Level
Adjusting mode: Multi resistance regulation
Effective angle: 35°
Size: 4.5x1.1cm(approx)
        Here we use the obstacle avoidance module and digital 13 interface with LED to build a simple circuit, making the obstacle avoidance warning light, accessing the avoidance sensor to digital 3 interface, when the obstacle avoidance sensor senses the signal, LED light, otherwise off.
        Program code:
int Led=13;//define LED interface
int buttonpin=3; //define obstacle avoidance interface
int val;//define Digital variable val
void setup()
{
pinMode(Led,OUTPUT);//define LED is output interface
pinMode(buttonpin,INPUT);//define obstacle avoidance is output interface
}
void loop()
{
val=digitalRead(buttonpin);//reading the value from 3 digital interface to val
if(val==HIGH)//when the obstacle avoidance sensor senses the signal, LED flash
{
digitalWrite(Led,HIGH);
}
else
{
digitalWrite(Led,LOW);
}
}
package include:
 
Infrared IR Sensor Obstacle Avoidance Sensor Smart Car  x  1

 11 digital input/output pins, all pins have interrupt/pwm/I2C/one-wire supported(except D0)
   1 analog input(3.3V max input)
   a Micro USB connection
Package Included:
1× D1 mini
 2×Long female pins
 2×Short female pins
 2×Normal pins
 

 
 
Infrared receiver module uses a 1838 infrared receiver
This is a universal type, with steel, bendable legs,
Size: 6.4 * 7.4 * 5.1MM, acceptance angle 90 °, working voltage 2.7-5.5V.
Frequency 37.9KHZ, receiving distance 18 m. Use inside and outside the double-shielded package structure,
Anti-light, electromagnetic interference capability, built-in infrared dedicated IC, can 500LUX light intensity work.
Widely used: stereo, TV, VCR, CD, set-top boxes, digital photo frame, car audio, remote control toys, satellite receivers, hard disk player, air conditioners, heaters, fans, lighting and other household appliances.
 
 
 
 
 

Features:
Adapt your USB port with this cable so you can power small devices and electronics that use a 3.5mm barrel jack. Cable uses the 5V DC from the USB port. Can be used with car outlet adapters that have a USB port as well (Car adapter not included).
 
100% Brand New, High Quality
DC Outside Diameter: 3.5mm
DC Indide Diameter: 1.35mm
Length Appro:About  50 cm
Color: Black
 
Package Included:
1 x 3.5*1.35mm DC Charger Cable
 
 

 
USB2.0 Male to 4P DIP switch DIP adapter board module USB adapter plate wholesale USB-0
 
 

New DC 3V-6V bis 400kV 400000V Boost Step up Power Module High Voltage Generator

 
 
 
 
 
 
 
 
 
 
 
20mm x 33m Heat Tape for 3D Printer Rapid Prototyping Three-Dimensional Printer Maker / for Reprap Tape
 
 
Description:
Color: Brown
Width: 20mm
Length: 33m
Use: Mainly for the print nozzles with ceramic fiber wrapped small aluminum block and fixing other effects
 
Package Included:
1X heat tape
 
 
 
 
 
 
 
 
 
 
 
 
 

 
Color: Green
Size : 58 ( mm ) x 35 ( mm )
 

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Brief introduction
 
A4988 is a complete microstepping motor driver with built-in translator for easy operation. This product is available in full, half, 1/4, 1/8 and 1/16 step modes operate bipolar stepper motors, output drive capacity of up to 35 V and ± 2 A. A4988 includes a fixed off-time current regulator, the regulator in slow or mixed decay modes. A4988 converter is the key to the easy implementation. As long as the "step" input inputting one pulse drives the motor one microstep. There are no phase sequence tables, high frequency control lines, or complex interfaces to program. A4988 interface is very suitable for complex microprocessor is unavailable or is overburdened.
In the micro-step operation, A4988 chopping control inside automatically selects the current decay mode (Slow or Mixed). In mixed decay mode, the device is initially set to a fixed downtime in some fast decay, then the rest of the slow decay downtime. Mixed decay current control scheme results in reduced audible motor noise, increased step accuracy, and reduced power consumption. Internal synchronous rectification control circuitry is provided to improve the pulse-width modulation (PWM) operation power consumption. Internal circuit protection includes: thermal shutdown with hysteresis, undervoltage lockout (UVLO), and crossover-current protection. Special power sequencing.
A4988 surface mount QFN package (ES), a size of 5 mm × 5 mm, nominal overall package height of 0.90 mm, with an exposed pad for enhanced thermal dissipation. This package is Pb (suffix-T), with 100% matte tin leadframe plating.
 
 
Features and Benefits
· Low RDS (On) Output
· Automatic current decay mode detection / selection
· Mix with slow current decay modes
· Synchronous rectification for low power dissipation
· Internal UVLO
· Cross-current protection
· 3.3 and 5 V compatible logic supply
· Thermal shutdown circuitry
· Ground fault protection
· Load short-circuit protection
· Optional step five modes: full, 1/2, 1/4, 1/8 and 1/16
 
 
Dear buyer:
Pls leave message you want which color, otherwise we ship green A4988 to you!
 
 
 
 
 
 
 
 
 
 
 
 
 

2 4 8Channel PC817 Optocoupler Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module PC 817
 
 

2 4 8Channel PC817 Optocoupler Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module PC 817
 
 

2 4 8Channel PC817 Optocoupler Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module PC 817
 
 

 
 
1, the current sensor chips: ACS712ELC-05B;
2, pin 5V power supply, on-board power indicator;
3, the module can be measured plus or minus 5 amps, corresponding to the analog output of 185 mV / A;
4, there is no the detection current through, the output voltage is VCC / 2;
5, PCB board size: 31 (mm) x13 (mm);
Note: ACS712 Hall detection principle, when you use to avoid magnetic field impact this!
Shipping list:
ACS712 module (5A) x 1
 
 

PCF8563 PCF8563T 8563 IIC Real Time Clock RTC Module Board For

Based on ESP-12E development kit, it can facilitate the development of WiFi Smart car, free to send Android phone source.
ESP12 DEV KIT development board expansion module;
lead ESP12 DEV KIT All-function pins: SPI, UART, GPIO, AI and 3.3V power connector;
expand two-way motor-driven, two-way direct drive motor;
onboard power switch;
Motor power range: 4.5V ~ 36V;
Control power range: 4.5V ~ 9V;
Motor power, control power separation; In the experiment, by short-circuiting block the merger, the VIN and VM short, while power supply to the motor and the control board.
Precautions
When l insert ESP-12E module, please note the direction consistent with an expansion board antenna;
use of short modules that can simultaneously control board and motor.
Related Documentation: http: //nodemcu-motor.doit.am/

Based on ESP-12E development kit, it can facilitate the development of WiFi Smart car, free to send Android phone source.
ESP12 DEV KIT development board expansion module;
lead ESP12 DEV KIT All-function pins: SPI, UART, GPIO, AI and 3.3V power connector;
expand two-way motor-driven, two-way direct drive motor;
onboard power switch;
Motor power range: 4.5V ~ 36V;
Control power range: 4.5V ~ 9V;
Motor power, control power separation; In the experiment, by short-circuiting block the merger, the VIN and VM short, while power supply to the motor and the control board.
Precautions
When l insert ESP-12E module, please note the direction consistent with an expansion board antenna;
use of short modules that can simultaneously control board and motor.
Related Documentation: http: //nodemcu-motor.doit.am/

Based on ESP-12E development kit, it can facilitate the development of WiFi Smart car, free to send Android phone source.
ESP12 DEV KIT development board expansion module;
lead ESP12 DEV KIT All-function pins: SPI, UART, GPIO, AI and 3.3V power connector;
expand two-way motor-driven, two-way direct drive motor;
onboard power switch;
Motor power range: 4.5V ~ 36V;
Control power range: 4.5V ~ 9V;
Motor power, control power separation; In the experiment, by short-circuiting block the merger, the VIN and VM short, while power supply to the motor and the control board.
Precautions
When l insert ESP-12E module, please note the direction consistent with an expansion board antenna;
use of short modules that can simultaneously control board and motor.
Related Documentation: http: //nodemcu-motor.doit.am/

This amplifier plate adopts the official standard circuit design, chip selection USES is the United States imported original Long Ding micro class D power amplifier chip.This chip is strong not strong you can go to check its information.Good product chip share and the vast number of music lovers, this is our consistent principle!The power amplifier has a high efficiency, large power, in the case of the 12 v power supply can output 10 w 10 w power, chip without heat sink, also have overheated, over-current protection function, such as function is very powerful, so to speak.This board with functions of switch, the SW nipple, will shut down power amplifier.
 
 
 

 
3S 12V 25A with Balance Li-ion Lithium Battery 18650 Charger Battery Protection Board 11.1V 12.6V
 
 
 
 
 
 
 

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This expansion board for the Nano 328P offers all the IO leads. Leads to the electronic building blocks 3pin / sensor interface. In addition, to provide external power input terminals that can support an external 7-12V input. 24L01 with XBee socket and the socket, extend the wireless capabilities of the Nano.
 
 
 
Nano Nano IO expansion board is of a breakout board. It leads to the so-called all pins used as building blocks 3PIN electronic interfaces, Zigbee XBee Series modules and nRF24L01 wireless interface. Support 7-12V external power supply.
 
 
 
 

 
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4S 30A Li-ion Lithium Battery 18650 Charger Protection Board 14.4V 14.8V 16.8V 4S BMS
 
1.2

 
 
 
 
Digispark USB Development Board
 
The Digispark is an Attiny85 based microcontroller development board similar to the line, only cheaper, smaller, and a bit less powerful. With a whole host of shields to extend its functionality and the ability to use the familiar IDE the Digispark is a great way to jump into electronics, or perfect for when an is too big or too much.
 
The Digispark is shipped fully assembled except for the two included and easy to solder headers.
 
Here are the specs:
 
Support for the IDE 1.0 (OSX/Win/Linux)
Power via USB or External Source - 5v or 7-35v (12v or less recommended, automatic selection)
On-board 500ma 5V Regulator
Built-in USB
6 I/O Pins (2 are used for USB only if your program actively communicates over USB, otherwise you can use all 6 even if you are programming via USB)
8k Flash Memory (about 6k after bootloader)
I2C and SPI (vis USI)
PWM on 3 pins (more possible with Software PWM)
ADC on 4 pins
Power LED and Test/Status LED
 
 
 
 
 
 

Built-in Ceramic Active GPS Antenna for NEO-6M NEO-7M NEO-8M

 
 
D1 mini ESP32 ESP-32 WiFi Bluetooth Internet of Things development board based ESP8266 Fully functional

Description:
Output category: digital sensor
Working principle: vibration sensor
Sensor type: 2.4GHz to 5.8GHz radar sensor
Material: mixture
 
Specification:
1. Independent of temperature, humidity, airflow, dust, noise, light and dark, anti-interference, etc.
2. The transceiver module is a field-shaped signal with a wide coverage and no blind spots.
3. The induction effect during conduction is better: better when used indoors
 
Precautions:
About electricity
Recommended qualified power supply, ie output voltage, current and ripple factor are standard power supplies, otherwise it is a movie
There may be some exceptions to the stability of this product, such as: false, no newspaper, automatic cycle start, etc.
About false positives
1. To ensure the eligibility of the power supply, please refer to the first item.
2. Test to ensure that the product under test does not surround the moving object (sensing range)
3. The power supply initialization time is about 10s-30s. During this period, it is abnormal sensory, which may cause false positive artifacts.
4. During indoor testing, the sensor is sensitive to the surrounding environment and needs to remain stationary, and ensure that the next cycle step test is performed before the end of the first sensor signal. When testing outdoor, be sure to pay attention to the dynamic surrounding environment, such as birds. Pedestrians, passing vehicles, etc.
5. The signal current output by the module is very weak. It is easy to cause false alarms through the high power of the drive tube.
This product is a housing component and the metal is not easily penetrated, so this product should not be used in metal housings.

 
 
 
 
1

Features:
8x8 dot matrix LED
8 step adjustable intensity
 
 
 
0.9

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Laser Sensor Module non-modulator Tube Laser Receiver New Module
 
 
 
 

 
Parts NO.:      HC-SR501
Package :      
Quantity :      1  PC
Electronics Description :

Product Features
Low-power dual-core 32-bit CPU for application processors
Main frequency up to 240MHz, computing power up to 600 DMIPS
Built-in 520 KB SRAM, external 4M PSRAM
Supports interfaces such as UART/SPI/I2C/PWM/ADC/DAC
Support OV2640 and OV7670 cameras, built-in flash
Support image WiFi upload
Support TF card
Support multiple sleep modes
Embedded Lwip and FreeRTOS
Support STA/AP/STA AP working mode
Support Smart Config/AirKiss one-click distribution network
Support secondary development

Product Features
Low-power dual-core 32-bit CPU for application processors
Main frequency up to 240MHz, computing power up to 600 DMIPS
Built-in 520 KB SRAM, external 4M PSRAM
Supports interfaces such as UART/SPI/I2C/PWM/ADC/DAC
Support OV2640 and OV7670 cameras, built-in flash
Support image WiFi upload
Support TF card
Support multiple sleep modes
Embedded Lwip and FreeRTOS
Support STA/AP/STA AP working mode
Support Smart Config/AirKiss one-click distribution network
Support secondary development

Product Features
Low-power dual-core 32-bit CPU for application processors
Main frequency up to 240MHz, computing power up to 600 DMIPS
Built-in 520 KB SRAM, external 4M PSRAM
Supports interfaces such as UART/SPI/I2C/PWM/ADC/DAC
Support OV2640 and OV7670 cameras, built-in flash
Support image WiFi upload
Support TF card
Support multiple sleep modes
Embedded Lwip and FreeRTOS
Support STA/AP/STA AP working mode
Support Smart Config/AirKiss one-click distribution network
Support secondary development

Product Features
Low-power dual-core 32-bit CPU for application processors
Main frequency up to 240MHz, computing power up to 600 DMIPS
Built-in 520 KB SRAM, external 4M PSRAM
Supports interfaces such as UART/SPI/I2C/PWM/ADC/DAC
Support OV2640 and OV7670 cameras, built-in flash
Support image WiFi upload
Support TF card
Support multiple sleep modes
Embedded Lwip and FreeRTOS
Support STA/AP/STA AP working mode
Support Smart Config/AirKiss one-click distribution network
Support secondary development

Product Features
Low-power dual-core 32-bit CPU for application processors
Main frequency up to 240MHz, computing power up to 600 DMIPS
Built-in 520 KB SRAM, external 4M PSRAM
Supports interfaces such as UART/SPI/I2C/PWM/ADC/DAC
Support OV2640 and OV7670 cameras, built-in flash
Support image WiFi upload
Support TF card
Support multiple sleep modes
Embedded Lwip and FreeRTOS
Support STA/AP/STA AP working mode
Support Smart Config/AirKiss one-click distribution network
Support secondary development

Product Features
Low-power dual-core 32-bit CPU for application processors
Main frequency up to 240MHz, computing power up to 600 DMIPS
Built-in 520 KB SRAM, external 4M PSRAM
Supports interfaces such as UART/SPI/I2C/PWM/ADC/DAC
Support OV2640 and OV7670 cameras, built-in flash
Support image WiFi upload
Support TF card
Support multiple sleep modes
Embedded Lwip and FreeRTOS
Support STA/AP/STA AP working mode
Support Smart Config/AirKiss one-click distribution network
Support secondary development

Description:
 
1: input: DC 4.5 V-7 V (input voltage must be more than to output voltage high 1 V above.)
2: output: 3.3 V, 800 mA (load current can't more than 800 mA)
3 : PCB size:8.6* 12.3 mm
 
Attention :
1: Boost modules or buck module indicate the operating voltage, Please donot exceed operating voltage , or it will be damaged easily !
2: Boost module output voltage can only be greater than or equal to input voltage, cannot be less than the input voltage!
3: Buck module input voltage must be higher than output voltage of 1.5V or 2V, otherwise it can not output enough power!
4: Automatic Adjustable Boost or Buck module has start voltage and limit working voltage, Please donot exceed them , or it will be damaged easily !
5: Cannot reverse polarity , or it will be short circuit, or will be born easily !
 
 
 
 
Package listing:
 
10PCS DC 5V to 3.3V Step-Down Power Supply Module AMS1117-3.3 LDO 800MA
 
 
 
 
2.

Wireless Stereo FM Radio Receiver Module PCB FM DIY Electronic Kits 76MHz-108MHz DC 1.8V-3.6V
Kit Purpose:
1, Suite variety of electronic components: a plurality of electronic components, resistors, capacitors, inductors, diodes, integrated circuits, headphone jack, buttons, etc., many kinds of basic components.
2, learning electronics.
3, practical ability.
4, is particularly suitable for use epoxy PCB welding students use rather than for general use paper-based board!
Frequency range: FM 76-108MHz
 
Advantages:
Electronic enthusiasts or electronic production of electronic student classes, in particular to optimize the arrangement of the elements according to the beginner, this package easy to manufacture and install a high success rate! As it has been used in many schools, so we know its performance. This kit is not just welding assembly, as well as adjust their own hands and the coiled coil, more fun, this is better than the other simply assembly kit. The main advantage of using the headset also takes into account the student's classroom noise!
 
Features and use:
FM radio program has a rich, good sound quality, etc.All over launch its own FM radio station. The kit FM scan radio pocket computers using special blocks, 16-pin dual flat package, the working voltage of 1.8-3.6V, the circuit includes a FM radio receiver from antenna to the frequency discriminator output audio signals of all the features, it also has search tuning circuit, the signal detection circuit, a mute circuit and compression frequency offset of the frequency-locked loop FLL circuit. IF frequency of the circuit is designed to 70KHZ, peripheral circuits without intermediate frequency transformer, wherein the frequency is selected by an internal RC circuit IF filter to complete. Aircraft such as digital radio tuner that uses electrical tuning buttons (SEEK , SEEK-), in addition to the volume control buttons (VOL , VOL-) and the power button (PW). After the circuit is powered on, press the power button, the circuit starts to work, press SEEK to search for high-frequency or low-end press SEEK- radio frequency search, automatic search for radio signals, tuning automatically stops, then click on the Search button if The circuit continues to search for radio stations. Frequency range is 76-108MHZ. Both receive Universal FM FM station can be received school campus radio station.