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Main > Sensor modules > Communication

Communication

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This multiplexer module allows you to add up to 16 input/output analog or digital channels to your project. You can even use it for multichannel TX/RX communication. It supports 2-6V power and logic, so it's easy to use it with Arduino, Raspberry Pi or ESP microcontrollers.
ID: 12590   Your Price: €1.80
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Brand: Soldered (e-radionica)
Are you short on IO pins? Looking to increase the number of them? That’s what the GPIO Expander MCP23017 is for! It uses I2C communication to do so. With just two wires, 16 new fully configurable digital IO pins are added to a microcontroller.
ID: 12254   Your Price: €5.20
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Brand: Adafruit
This board comes pre-programmed with seesaw peripheral code that will let it act as an "I2C to something" converter. It has 12x GPIO, 9x 10-bit ADC, 5x 8-bit PWM, 1x NeoPixel output, 1x interrupt, 1x LED, 127 byte EEPROM and two StemmaQT/Qwiic/EasyC I2C connectors. Works with 2-5 V power/logic.
ID: 12647   Your Price: €7.90
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Brand: Adafruit
This board has 18 total 'I/O' pins, 10 columns and 8 rows, which can be arranged as a matrix of buttons for a total of 80 switches. Or you can use any subset as individual GPIO input or outputs. The nicest part of the keypad driver is that it has a 10-element event FIFO queue. Since it's I2C (StemmaQT/Qwiic/EasyC compatible) it's very easy to use with any microcontroller or computer.
ID: 12649   Your Price: €9.50
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Brand: Adafruit
Finally, a way to get up to 4 same-address I2C devices hooked up to one microcontroller - this multiplexer acts as a gatekeeper, shuttling the commands to the selected I2C port with your command. Using it is fairly straight-forward: the multiplexer itself is on I2C address 0x70 (but can be adjusted from 0x70 to 0x77 using jumpers on the back) and you simply write a single byte with the desired multiplexed output number to that port.
ID: 12648   Your Price: €6.40
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ADS1115 is precision analog-to-digital 16-bit converter (ADC). The chip can be configured as 4 single-ended input channels, or two differential channels. It communicates over I2C, and has built-in programmable gain amplifier (up to x16). This general purpose ADC can run from 2V to 5V power/logic, can measure a large range of signals and its very easy to use.
ID: 11262   Your Price: €9.50
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Brand: Soldered (e-radionica)
This small and simple module gives us a translation of logic level between two signals. This is useful when we want to achieve communication between two devices where one works on 5V and the other on 3.3V logic level, or any other combination of voltages.
ID: 12244   Your Price: €2.50
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Brand: Adafruit
This board performs bidirectional level shifting from 5V to 3.3V (and vice versa) and will auto-detect the direction. Only thing that doesn't work well with this chip is I2C or control lines with a lot of capacitance on them.
ID: 10994   Your Price: €5.97
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Brand: Soldered (e-radionica)
This small and simple module gives us a translation of logic level between two signals. Something like this is useful in this case if we want to achieve communication between two devices with different logic levels. This board is specialized for signal conversion for I2C (IIC) communication protocol.
ID: 12246   Your Price: €3.95
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Brand: Adafruit
On one side is 5V-safe power and logic input. In the middle is a 3.3V regulator that can provide 500mA plus level shifting circuitry. On the opposite side is the same I2C traffic but now safely shifted down to 3.3V to allow usage with the vast number of sensors and devices that are not 5V safe.
ID: 12293   Your Price: €5.50
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Brand: Adafruit
This board allows you to use I2C over long cables - up to 3m @ 400 KHz and up to 30m @ 100 KHz via Ethernet cable! Just connect it to your I2C bus at the beginning of the chain, no special firmware, software, or configuration required. Runs with any bus voltage, from 1.6V to 5.5V and up to 400 KHz SCL speed, with cables up to 4000pF.
ID: 12294   Your Price: €15.00
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If you need to connect to RS485 sensor to your Arduino project, or simply want to communicate over greater distances, this module will convert standard UART communication to RS485 and vice versa. It works with both 3.3 and 5V power/logic. Connectors are included but not soldered to the board.
ID: 12639   Your Price: €3.00
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If you need to connect to CAN sensor to your Arduino project, or simply want to establish reliable communication, this module will convert standard UART communication to CAN bus and vice versa. It works with both 3.3 and 5V power/logic. Connectors are included but not soldered to the board.
ID: 12640   Your Price: €5.70
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USB to TTL cable based on CP2102 chip, allows you to comunicate with your Raspberry Pi or Arduino from PC. Cable length 1m, wires color coding: red = 5V, black = GND, white = RXD, green = TXD.
ID: 10669   Your Price: €6.50
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Brand: Adafruit
The cable is easiest way ever to connect to your microcontroller/Raspberry Pi/WiFi router serial console port.
ID: 11018   Your Price: €16.60
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Brand: Adafruit
This brakeout bouard is general purpose USB to GPIO, SPI, I2C - it let's you communicate with sensors, displays etc. directly from your computer, no need for Arduino programming, just writa a simple Python script and run it on your Windows,Linux/mac PC. It even has GPIOs to read or write to LEDs, switches and buttons. This is a new version with USB-C and STEMMA QT/Qwiic/easyC connectors.
ID: 11874   Your Price: €23.40
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SPI Ethernet module for Arduino projects.
ID: 10941   Your Price: €9.95
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Ethernet module based on W5500 chip, with SPI interface, supporst both 3.3 and 5V logic, 10/100 Mbit/s, hardwired TCP/IP protocols, with power off and wake-on-LAN support.
ID: 11905   Your Price: €9.50
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SIM800L based GPRS module with the smallest footprint, works on 2G networks, accepts Micro SIM card, comes with both PCB and small GSM antennas. Operating voltage 3.7-4.2V (peak current 2A), dimensions 22x18 mm.
ID: 12030   Your Price: €11.80
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HC-05 Bluetooth module with serial communication, can be set as slave or master, 3.3 V logic, 3.6-6 V power input.
ID: 11611   Your Price: €9.00
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BLE Bluetooth 4.0 module with serial communication, master/slave configuration, 3.3 V operating voltage, dimensions 34x16 mm.
ID: 12035   Your Price: €12.00
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Board is based on Bluetooth 5.0 module (4.0 and 4.2 compatibile), working frequency 2.4 GHz, GFSK modulation mode, max output 4 dB, max transmission distance up to 60 m. It can be controlled via AT commands over UART and by default BLE can be used without configuration. Power supply 3.6-6V, dimensions 32.6x18.9 mm.
ID: 12641   Your Price: €4.20
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nRF24L01 is a 2.4GHz worldwide ISM band single-chip wireless transceiver with SPI interface, built-in antenna and low power consumption.
ID: 11902   Your Price: €3.19
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Based on 2.4 GHz NRF24L01+ chip and equipped with PA/LNA chip for long range communication (up to 1100 m with no obstacles), 2.4 GHz antenna included.
ID: 11043   Your Price: €7.70
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ESP8266 offers a complete and self-contained Wi-Fi networking solution, allowing it to either host the application or to offload all Wi-Fi networking functions from another application processor. Perfect and simple AT commands.
ID: 10695   Your Price: €4.00
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Brand: Adafruit
Give your ItsyBitsy project a lift with the Adafruit AirLift Bitsy Add-On - a daughterboard that lets you use the powerful ESP32 as a WiFi co-processor. This chip can handle all the heavy lifting of connecting to a WiFi network and transferring data from a site, even if its using the latest TLS/SSL encryption (it has root certificates pre-burned in).
ID: 11702   Your Price: €22.30
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The 433MHz RF link kit is consisted of transmitter and receiver, popularly used for remote control.
ID: 10661   Your Price: €2.50
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Development kit based on PN532 NFC/RFID V3 module, includes Dupont wires, RFID card and tag for fast prototyping.
ID: 10332   Your Price: €13.00
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Brand: Adafruit
This RFID tag is really unique: it works with mobile phones just like other RFID tags, but you can reprogram it over I2C. The tag shows up as an ISO/IEC 15693 (13.56MHz) chip which is readable by phones and tablets. Note that the most popular hobby RFID reader/writer chips like the PN532 do not support ISO15693, but both Apple and Android phones can be used to read the tags with success.
ID: 12017   Your Price: €6.40
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Brand: RTL-SDR Blog
Software defined radio dongle by RTL-SDR Blog based on RTL2832U chip, with several improvements over generic brands including use of the R828D tuner, triplexed input filter, notch filter, improved component tolerances, a 1 PPM temperature compensated oscillator (TCXO), SMA-F connector, aluminium case with passive cooling, bias tee circuit, improved power supply, and built in HF upconverter.
ID: 12279   Your Price: €59.00
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Brand: RTL-SDR Blog
Includes 1x RTL-SDR Blog brand R828D RTL2832U 1PPM TCXO SMA-F V4 Dongle, 1x Dipole Antenna Base with 60cm RG174, 2x 23cm to 1m telescopic antenna, 2x 5cm to 13cm telescopic antenna, 1x 3 meter RG174 extension cable, 1x Flexible Tripod Mount, 1x Suction Cup Mount.
ID: 12182   Your Price: €86.00