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Reference: RBD-984
Heat Shrink Tubing 2:1, Eventronic Electrical Wire Cable Wrap Assortment Electric Insulation Heat Shrink Tube Kit (1 pcs) Please Choose Size Below
Reference: RBD-1354
Length: 8.5 inches (Medium) Material: Copper Plated.EachPin Spacing: 2.54mm.Color: Colorfulcompatible with 2.54mm mil spacing pin headers.It can be used for PCB project, pc motherboard, etc.Allow you to plug and unplug easily for prototyping.Package Contents: 1 x Jumper Wire You will get only one pcs.
Reference: RBD-245
Choose your desire Resistor value from below:
Reference: RBD-31
3 Types Available 1. Male to Male 2. Male to Female 3. Female-Female
Reference: RBD-94
Arduino UNO in Bangladesh The Arduino Uno is a microcontroller board based on the ATmega328 (datasheet). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller.
Software Radio RTL2832U + R820T2 RTL-SDR ADS-B DVB-T DAB SDR Receiver
Store Pickup Available!
Free Ship Over 5000 BDT
Quality Product
No Warranty
No Replacement
What is the difference between the RTL dongles
The DVB-T dongles is based on the Realtek RTL2832U and can be used as a cheap SDR, since the chip allows transferring the raw I/Q samples to the host, which is officially used for DAB/DAB+/FM demodulation. The possibility of this has been discovered by Eric Fry (History and Discovery of RTLSDR). (With the nessary software and antenna you could listen to the following frequensies 48.25-863.25 Mhz.
Officially the RTL dongle dokumentation only specify the frequency range "48.25-863.25 Mhz" but the one's I have tested do work from about 24MHz to 1766MHz with a dead spot just above 1.2Ghz
If you want to no more how to configer and install the RTL dongle read more on the blog http://zr6aic.blogspot.com/search/label/RTL2832U and http://zr6aic.blogspot.com/search/label/rtl_tcp
To see this RTL dongle in action go to my webSDR at http://zr6aic.giga.co.za:8901 the 2m band is using RTL dongle.
It has an MCX antenna connector, which is not really popular so you will need adapter if you want to connect to external antenna.
Windows SDR# software is avalible here
This image show the difference in sensitivity and filter.
Linux Quisk software.
Quisk is available here
Click on Youtube video below to see the RTL dongle in action
Gqrx On Linux
Installation instructions here
DVB-T + DAB + FM RTL2832U + R820T2 Support SDR Tuner Receiver Mini Portable Digital
Features:
Supports Digital terrestrial video and radio program recording (records digital terrestrial TV on PC or Laptop). The included Input Terrestrial Antenna will offer stable TV signal. Supports Real Time digital video recording and broadcasting. Supports Watching DVB-T digital TV and listen to DAB and FM radio. Full DVB-T bandwidth reception (at 6 / 7 / 8MHz) Supports Still image snapshots and PIP (Picture in picture) function. Can Schedule recording using the built-in Scheduler and Time-shifting function Digital TV recording and playback as DVD quality Support both MPEG-2, MPEG-4(H.264) encoding Support multi-picture display Support EPG (Electronic Program Guide); Support Teletext Support Microsoft BDA drivers Supports Remote control Support Systems: Windows 2000/XP/Vista/WIN7/WIN8 System Requirements: CPU: Pentium IV 1.8 GHz or above Operation System: Windows2000 SP4, Windows XP SP2/W7/W8 (Desktop, Notebook, etc) DirectX9.0c or above Memory: 128MB 500M of available hard disk space or above CD-ROM Drive USB2.0 Interface.
RTL SDR is generally completed by two chips, one is called a tuner, and the other is a demodulator. The function of tuner is to amplify, downconvert, filter, etc. the signal of the specified frequency and bandwidth, and send it to the demodulator chip. The demodulator chip first digitizes the signal by A / D sampling, and then performs corresponding arithmetic processing according to the TV system to be received, and outputs information such as video stream, sound, and data broadcasted by the TV station. Because the working frequencies of various systems are different, in order to make the chip manufacturer able to put it into production many times and use it for a long time, they will design the tuner chip to cover a wide frequency band and set different receiving bandwidths. Then, according to user needs and government radio regulations, certain frequency bands are turned on in different products, and certain frequency bands are disabled. If the tuner is cracked, then there is a way to enable the receiving capability of all its frequency bands, including receiving aircraft signals at 1090MHz. The demodulator in the TV stick cannot of course demodulate the signal transmitted by the aircraft, but the demodulator performs A / D sampling on the signal sent by the tuner. This sampling function is necessary to demodulate any signal, and of course it can also be used to Demodulate the signals emitted by the aircraft. By cracking the RTL SDR driver, the signal of the tuner is digitized by the stripper for A / D sampling and then sent directly to the computer through the USB interface, so that we can process the original tuner signal sampling on the computer, that is, use the computer software to demodulate Tasks. The above method of demodulating communication signals using computer software is the so-called "Software Defined Radio" (SDR). In fact, the research and development of software radio technology has a history of several decades, originally originated from the multi-standard radio project of the US military. At present, software radio technology is widely used in the mobile communication systems that we use daily. For example, the signal processing in base stations is largely completed by programmable FPGA and DSP. Tuning method (except for a few modules with a large amount of computation and high real-time requirements, such as turbo decoders, spread-spectrum correlators, etc., these modules often embed some highly customized "hard" cores in the baseband processor to implement) Later, these foreigners developed a lot of USB peripherals based on this chip, which are specially used to play SDR, collectively called: RTL-SDR DONGLES.
RTL2832U & R820T Tuner, MCX Input. Low-Cost Software Defined Radio Compatible with Many SDR Software Packages I did a little informal testing between the two sticks using SDR Sharp using the supplied whip antennas. These tests were just to take a look at the real world performance between the chipsets on some commonly used frequency range. I am sure that at some point someone will do some more accurate testing, but these real world listening tests will at least give you a rough idea of the differences between the two DVB-T sticks. Here is a synopsis of the results. FM Broadcast Band The E4000 seemed to be noticeably more sensitive in this area. The R820T did fairly well also, but the E4000 definitely did a better job with very weak signals. This might make the E4000 a better candidate for use with a HF converter since most of the inexpensive ones available convert HF to the FM band on the RTL2832U sticks. AirBand Both sticks exhibit a lot of susceptibility to RFI in this band in my environment. Both failed to pick up a weak ASOS signal at 132.875MHz that I can usually receive on most scanners with a whip antenna. Both sticks will do much better with an external antenna and both will receive stronger nearby aircraft signals easily with the whip. Overall the two sticks were fairly close in performance with a tiny edge going to the R820T. NOAA Weather Band Both sticks were able to receive the local NOAA weather broadcast at 162.400MHz with their whip antennas with no problems. Again the R820T was slightly stronger. 800 MHz Trunking This is where the R820T really began to become noticeably more sensitive. While the E4000 could receive the same signals, the R820T signals were noticeably stronger and clearer. 1090MHz ADS-B Aircraft Navigation Signals Here the R820T totally “wipes the floor” with the E4000. ADS-B signals were tremendously better with the R820T. This makes the R820T a much better choice to use as an inexpensive ADS-B receiver with gr-air-modes. 10 Meter Amateur Radio Band The E4000 cant go here, but the R820T can. Actually the R820T can do a fairly good job with signals here. However, the R820T is not going to compete with a competent HF radio. Just consider it as a “bonus”. At the the end of the day, I would have to declare the R820T the victor in this shootout, if you are willing to give up a little performance tradeoff in the FM Broadcast band. The R820T appears to become a tad more sensitive starting around 160MHz with larger gains the higher you go. The R820T seems much better suited for monitoring higher frequency signals such as 800MHz trunking systems and most definitely ADS-B. Also you do get additional coverage from 24MHz to 30MHz.
Reference: RBD-1557
LC-GSM-SIM800C USB to GSM is a quad-band GSM/GPRS module with stable performance, compact appearance and high cost performance, which can meet the various needs of customers. Integrated USB to serial port chip, you can plug directly into the computer to debug. SIM800C operates at GSM/GPRS 850/900/1800/1900MHz which support to be used worldwide. It can...
Reference: RBD-1603
It is a customized version of the classic ARDUINO UNO R3 board. Full integration of microcontroller Atmel ATmega328 and IC Wi-Fi ESP8266 with 8 MB flash memory, and USB-TTL converter CH340G on one board. All modules can work together or independently. The cable is not included. You need to use a micro-USB cable to program it.
Reference: RBD-1640
Compact, versatile, easy to install, easy to deploy, a flammable gas detector with 85db alarm. Detects propane, butane, LPG, natural, town, coal, common flammable gasses. 12V model with non-polarised (reversible) power terminals for easy wiring. Suitable for leisure craft, vehicles and similar 12V scenarios, eg. campervan / motorhome / RV / yacht / boat /...
Reference: RBD-579
SIM808 module is a GSM and GPS two-in-one function module. It is based on the latest GSM/GPS module SIM808 from SIMCOM, supports GSM/GPRS Quad-Band network and combines GPS technology for satellite navigation.
Reference: RBD-697
CH340 USB to ESP8266 Serial Wireless Wifi Module Adapter Board CH340 ESP-01 Development Microcontroller For Arduino
Reference: RBD-1535
WGP Mini UPS is a DC uninterruptible power supply which can store power; It can provide hours of operation during a power failure at a low price vs a traditional UPS. It is designed to provide emergency power backup to all kinds of DC power equipment such as routers, modems, set-top boxes, VOIP phone systems, surveillance systems, alarm systems, personal...
Reference: RBD-1531
The 32F429IDISCOVERY Discovery kit leverages the capabilities of the STM32F429 high-performance microcontrollers, to allow users to develop rich applications easily with advanced graphic user interfaces. https://www.st.com/en/evaluation-tools/32f429idiscovery.html
Reference: RBD-1526
Can control up to 2 device 220V Model : T3EU2C Remotely control devices through a phone Turn on/off devices with Amazon Alexa and Google Assistant Touch control buttons for convenient operation Set a particular time to turn on/off devices Customize one or groups of SONOFF devices to turn on/off with a simple tap Allow you to manage devices when there is...
Reference: RBD-1765
LILYGO TTGO LoRa32 V2.1_1.6 Version 915Mhz ESP32 LoRa OLED 0.96 Inch SD Card Bluetooth WIFI Wireless Module ESP-32 SMA Model: 915MHZ CH9102F T3_V1.6.1
Reference: RBD-443
The GPRS Shield provides you a way to use the GSM cell phone network to receive data from a remote location. The shield allows you to achieve this via any of the three methods: Short Message Service Audio GPRS Service
Reference: RBD-1566
Features: 1) Long distance APP remote control via WIFI; 2) Support routing mode (AP) and LAN connection mode (STA); 3) Support almost every kind of one-wire or two-wire LED driver IC; 4) Brightness adjustable, with 180 kinds of patterns and 8 kind of color adjustable patterns; 5) Creatively using from-image-to-effect method for user to DIY any effect; 6)...
Reference: RBD-1558
TTGO Meshtastic T-Beam V1.1 ESP32 915Mhz WiFi Bluetooth ESP32 GPS NEO-6M SMA 18650 Battery Holder with OLED (915Mhz OLED)
Reference: RBD-1670
ESP8285 infrared receiving and transmitting wifi remote control switch module development learning board 1. Overview The ESP infrared transmitting and receiving remote module uses the ESP-01M module with ESP8285 as the core as the main control, and the program is the same as ESP8266. The module has an infrared receiver tube and an infrared transmitter...
Reference: RBD-694
ESP8266MOD or ESP-12E or ESP-12F is New Lolin NodeMcu Lua V3 Wireless Module Wifi Internet of Things (IoT) Development Board Based On ESP8266 Micro USB To TTL This is the famous NodeMCU which is based on ESP8266 WiFi SoC. This is version 3 and it is based on ESP-12E or ESP-12F or ESP8266MOD USB Driver: CH340 WiFicontroller ESP8266 NodeMcu V3, already...
Reference: RBD-1552
LORA MODULE HIGH SENSITIVITY SX1278/SX1276 RF TRANSCEIVER
Reference: RBD-1402
NodeMCU ESP8266 Expansion Base Board This NodeMCU ESP8266 Expansion Base Board is an expansion board designed to work with the NodeMCU V3 ESP8266 ESP-12E. Powered by 6V to 24V DC input, it provides the support power to operate the NodeMCU V3, and provide easy connection to all of its input and output pins to help you connect your NodeMCU board to other...
Reference: RBD-1037
SIM808 module is a GSM/GPS/BT three-in-one function module. It is based on the latest GSM/GPS/BT module SIM808 from SIMCOM, supports GSM/GPRS Quad-Band network and combines GPS technology for satellite navigation. It has high GPS receive sensitivity with 22 tracking and 66 acquisition receiver channels. Besides, it supports A-GPS that available for...
Reference: RBD-1412
TTGO T-Call V1.3 or V1.4 ESP32 Wireless Module GPRS Antenna SIM Card SIM800L Board The new board combines ESP32 WiFi & Bluetooth WiSoC with SIMCom SIM800L GPRS module, and also happens to rely on a USB-C port for power and programming instead of the more common micro USB port on this type of hardware.
Reference: RBD-1176
Sonoff S26 WiFi Smart Socket দ্বারা আপনি আপনার যে কোনো ইলেকট্রনিক সামগ্রীকে ইন্টারনেট এর মাধ্যমে অন অফ ও কন্ট্রোল করতে পারবেন। এটি আমাজন আলেক্সা ও Google Assistant / Home এর ভয়েস কম্যান্ড দিয়েও কাজ করতে পারবেন। Sonoff S26 WiFi Smart Socket Wireless Plug Power Socket Smart Home Switch for Amazon Alexa Google Assistant IFTTT 3 Pin Socket
Reference: RBD-345
ESP8266 is a wifi SOC (system on a chip) produced by Espressif Systems. It is a highly integrated chip designed to provide full internet connectivity in a small package. This is a module based on ESP8266 chip. Please see supplied pinout photo and schematics for connectivity details. There is a lot of online resources available for this module.
Reference: RBD-1525
Can control up to 3 device 220V Model : T3EU3C Remotely control devices through a phone Turn on/off devices with Amazon Alexa and Google Assistant Touch control buttons for convenient operation Set a particular time to turn on/off devices Customize one or groups of SONOFF devices to turn on/off with a simple tap Allow you to manage devices when there is...
Reference: RBD-948
ESP32 Development Board WiFi+Bluetooth Ultra Low Power Consumption Dual Cores ESP-32 ESP-32S Board
Reference: RBD-1671
1.Bluetooth wifi development board, support for Nodumcu / for Arduino 2.DHT11 temperature and humidity sensor 3.CP2104 communication chip USB TO TTL 4.Micro USB port 5. Soil probe (long) soil temperature and humidity detection module 6.18650 Lithium Battery Holder Powered A for LG 3000mAH 18650 battery could make ESP32run 17 hours or more. This capacitive...
Reference: RBD-1336
ESP8266 ESP-01S 5V WiFi Relay Module Things Smart Home Remote Control Switch Phone APP ESP01 ESP-01 Wireless WIFI Module (ESP8266 is not included)
Reference: RBD-1255
All ESP8266 pins are connected with header12 digital pins1 analog inputIntegrated 0.96″ OLEDMicro USB connectionCompatible with ArduinoCompatible with NodeMCU(Lua for ESP8266)Input Power 5VCompatible for ArduinoCompatible with NodeMCU(Lua for ESP8266)Click the link for more details:https://github.com/squix78/esp8266-oled-ssd1306
Reference: RBD-1529
Model:SX1278ZTR4 SX1278 433mhz module spread spectrum low power serial port module LoRa wireless module Range: 3-5 KM (line of sight) Silicon Transmission Technology's SX1278 module (SX1278ZTR4-GC) has been widely used by thermostat manufacturers due to its small size, low cost, and reliable quality. At the same time, Silicon Transmission Technology...
Reference: RBD-1017
Sonoff IFan02 Smart Fan Speed Control Compatible with Alexa and Google Assistant Power supply: 90V~250V AC(50/60Hz) Max. Load: Fan- 250V, 2A, 500W; Light- 250V, 5A, 1250W Wireless standard：802.11.b/g/n 2.4G WiFi Encryption: WEP/TKIP/AES Security Mechanism: WPA-PSK/WPA2-PSK Packing List iFan02 *1 2.4G RF Remote with button cell*1 User Guide * 1
Reference: 1812
WeMos D1 mini Pro – ESP8266 based WiFi Module D1 MINI-PRO D1 Mini Pro Board with 16 MB flash memory and ESP8266 chipset. The board can be programmed with Arduino IDE, has the CP2104 USB chipset and allows easy and fast creation of IoT devices.Technical data • 11 digital input pins• all pins have interrupts• PWM/I2C & One-Wire Support• 1 Analog input...
Reference: RBD-1142
নতুন রাস্পবেরি পাই ৪ পৃথিবীর অন্যতম ক্রেডিট কার্ড সাইজের শক্তিশালী কম্পিউটার। এটি ডুয়াল 4K মনিটর সমর্থন করে। এটি মূলত লিনাক্স অপারেটিং সিস্টেম সাপোর্ট করে। অনেক ধরনের প্রোগ্রাম ডেভলপ করা যায়। কি কি থাকছে ? ১ টি রাস্পবেরি পাই 4 (Made in UK) RAM: 1GB, 2GB, 4GB, 8GB (পছন্দ করে নিতে পারবেন) একসাথে দুটি HDMI মনিটর লাগানো যায়। ১ টি কুলিং ফ্যান কেস।...
Reference: RBD-1145
Micro HDMI V1.4 Male to HDMI Male Connection Cable - Black (1.5m) Compatible with Raspberry Pi 4 You can use this cable to connect your regular HDMI Monitor/ HDMI TV with Raspberry Pi 4 Raspberry Pi 4 got Dual Micro HDMI port for dual monitor setup. Be sure to purchase 2 cables if you are looking for the dual monitor setup!
Reference: RBD-1143
Raspberry Pi 4 Aluminum Alloy Case, Raspberry Pi 4 Model B Aluminum Alloy Enclosure Metal Case with Onboard Cooling Fan Compatible with Raspberry Pi 4 Computer Model B Only - Silver **Raspberry Pi not Included
Reference: RBD-1020
Cable Length: 2.5m Frequency Range(MHz): 824-960/1710-1990Mhz Bandwidth(MHz): 136/280 VSWR≤1.5 Gain(dBi): 2-3dbi Max Input power(W): 60 Input Impedance(Ω): 50 Polarization Type: Vertical net weight: 47g Cable Type: RG174 Mounting Adhesive
Reference: RBD-305
320×480 resolution Resistive touch control Supports any revision of Raspberry Pi (directly-pluggable) Compatible with Raspberry Pi A, B, A+, B+, 2B, 3B, 3B+,4B versions Drivers provided (works with your own Raspbian/Ubuntu directly) Size perfectly fits the Pi High quality immersion gold surface plating Supports Raspbian system, ubuntu system ,kali Linux...
Software Radio RTL2832U + R820T2 RTL-SDR ADS-B DVB-T DAB SDR Receiver
