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RPi Zero GPIO extensions and HAT

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RTC module DS3231 I2C - real time clock

Module with real time clock, allows you to read the time in hours, minutes, and seconds, and to read the date: month, day, year. The device was based on the DS3231 system,...
Index: MOD-03790
Index: MOD-03790
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Regular price €6.49 Price €6.49

Raspberry Pi PoE+ HAT - Power over Ethernet for Raspberry Pi 4B/3B+ - SC0468

Cap designed for Raspberry Pi 3B+ and 4B versions which are equipped with 4-pin PoE connector. It allows simultaneous communication with LAN and powering the minicomputer...
Index: RPI-19537
Index: RPI-19537
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Regular price €25.93 Price €25.93

Logic level bi-directional converter, 4-channel - SparkFun BOB-12009

The module allows to exchange data between systems that use the most popular voltages levels: 5 V and 3.3 V and 1.8 V and 2.8 V. Works in both directions simultaneously. It has...
Index: SPF-02259
Index: SPF-02259
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Regular price €3.88 Price €3.88

ProtoPi Plus Side - extension GPIO Raspberry Pi 4/3/2/B for breadboard + tape

The module allows you to connect the GPIO leads of the Raspberry Pi 4, 3, 2 and B plus minicomputer to popular 830-hole contact boards using the included 40-wire tape. The...
Index: MSX-02927
Index: MSX-02927
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Regular price €8.01 Price €7.21
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4-channel logic level converter

The module allows to exchange data between systems that use the most popular levels of voltage: 5 V <-> 3.3 V and 3.3 V <-> 1,8 V. It works in both directions simulatneously....
Index: MSX-06117
Index: MSX-06117
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Regular price €2.15 Price €2.15

Logic level bi-directional converter, 4-channel - Pololu 2595

Miniature (13 x 10 mm). the module allows to exchange data between systems that use the most popular voltage levels ranging from 1.5 V to 18 V and Vice versa. Four channels to...
Index: PLL-02523
Index: PLL-02523
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Regular price €3.36 Price €3.36

Power monitor HAT - 4 channel - for Raspberry Pi - Waveshare 17539

Overlay for the Raspberry Pi to monitor the current power consumption, voltage and power for the channel. It is equipped with 4 measuring channels. It communicates via I2C...
Index: WSR-16402
Index: WSR-16402
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Regular price €21.48 Price €21.48
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RS232 Hat for Raspberry Pi 3B/2B/B+

Shield for Raspberry Pi, version 3 and 2, with the system allowing for communication via the RS232 interface. The module has a ST3232 converter which communicates via UART and...
Index: MSX-04553
Index: MSX-04553
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Regular price €13.00 Price €13.00

THT prototype board - Raspberry Pi 4B/3B+/3B/2B

The board allows you to create electronic circuits yourself. It is connected directly to the GPIO outputs of the Raspberry Pi mini-computer version 4B/3B+/3B/2B.
Index: MOD-02816
Index: MOD-02816
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Regular price €5.40 Price €5.40

Expander pins GPIO Hat - overlay for Raspberry Pi 4/3/2/B+ - red

The board provides the connection of the three modules for each of the GPIO pins of the Raspberry Pi. It has 3 rows of goldpin connectors, 40 pieces in each.
Index: MOD-09423
Index: MOD-09423
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Regular price €6.49 Price €6.49

Logic level converter 3,3V / 5V - I2C UART SPI

The module allows to exchange data between systems that use two popular voltages: 3.3 V and 5 V. It provides connection of interfaces: UART, SPI and I2C.
Index: MOD-01513
Index: MOD-01513
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Regular price €1.93 Price €1.93

Argon Fan HAT v1.5 - module with fan for Raspberry Pi

Overlay with 40 x 40 mm fan for Raspberry Pi 4B / 3B+ / 3B. After downloading the script from the manufacturer's website, you can adjust the fan speed . There is a power /...
Index: ARG-15394
Index: ARG-15394
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Regular price €11.91 Price €11.91

MCP23018-E/SP - 16-Bit I/O Expander with Open-Drain Outputs

The system allows to increase the number of pins (up to 16) of the microcontroller (including minicomputer Raspberry Pi). It communicates with the central unit via the I2C bus...
Index: UCC-06506
Index: UCC-06506
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Regular price €3.45 Price €3.45

Blinkt! 8x adressed LED RGB - Raspberry Pi extension

Blinkt! is a shield for the Raspberry Pi mounted on GPIO connector of the minicomputer. Board has eight individually addressed RGB LEDs, ideal for adding a visual notification...
Index: PIM-10620
Index: PIM-10620
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Regular price €7.57 Price €7.57

Argon ONE M.2 SATA expansion board - for Raspberry Pi 4B

Argon One M.2 is an expansion board for Argon One cases. It allows you to run your Raspberry Pi using an M.2 SATA SSD , which provides faster boot up and more capacity . It...
Index: ARG-18766
Index: ARG-18766
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Regular price €27.99 Price €27.99

MCP4725 DAC I2C converter - SparkFun BOB-12918

Digital-to-analog converter with I2C interface. The module allows you to receive signal in the form of analog voltage from any microcontroller that has I2C. It is powered with...
Index: SPF-02275
Index: SPF-02275
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Regular price €7.36 Price €7.36

PiClock RTC PCF8563 I2C - real time clock + buzzer + battery for Raspberry Pi 3

A PCF8563 real time clock module whose supply voltage is maintained by a CR2032 round battery (included). The chip allows timekeeping while the Raspberry Pi is disconnected...
Index: MSX-06077
Index: MSX-06077
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Regular price €10.83 Price €10.83

HiFiBerry DAC2 Pro - sound card for Raspberry Pi 4B/3B+/3B

High quality sound card with digital-analogue and analogue-digital converter for Raspberry Pi 4B/3B+/3B. It is equipped with a Burr-Brown 192 kHz / 24-bit converter. On the...
Index: RHF-18129
Index: RHF-18129
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Regular price €62.71 Price €62.71

MCP3424 - ADC 18-bit 4-channel I2C converter

Module with analog-digital converter, delta-sigma type with 18-bit precision. It is equipped with four channels with differential inputs. It works at speed of up to 240 samples...
Index: DFR-03036
Index: DFR-03036
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Regular price €15.17 Price €15.17

Proto Hat to Raspberry Pi 4B/3B+/3B/2B

Board allows for independent creation of electronic circuits. It is connected directly to the GPIO pins of the Raspberry Pi minicomputer, version 4B / 3B+ / 3B / 2B.
Index: MOD-09422
Index: MOD-09422
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Regular price €4.32 Price €4.32

Logic level transmitter TXB0104 bi-directional, 4-channel - SparkFun BOB-11771

The module allows to exchange the data between systems that use the most popular voltage levels: from 1.2 V to 3.6 V for VCCA inputs, and from 1.65 V to 5.5 V for VCCB inputs....
Index: SPF-04290
Index: SPF-04290
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Regular price €6.49 Price €6.49

MSX Proto Hat for Raspberry Pi 4B/3B+/3B/2B

Board allows for self-creation of electronic circuits. It is connected directly to the GPIO pins of the Raspberry Pi minicomputer, version 4B / 3B+ / 3B / 2B.
Index: MSX-04552
Index: MSX-04552
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Regular price €7.14 Price €7.14

PCF8591 - A/D and D/A converter, 8-bit I2C v2

Module with A/D converter - 4 channels and D/A - 1 output. It works with voltage from 2.5 V to 6.0 V, and communicates over I2C. The board also contains: potentiometer,...
Index: MOD-02632
Index: MOD-02632
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Regular price €4.32 Price €4.32

IQaudIO Codec Zero - sound card for Raspberry Pi 4B/3B+/3B

Codec Zero is a module with dimensions equal to Raspberry Pi Zero . The cover plate is equipped with a speaker output (mono), audio jack connectors to connect an electret...
Index: RPI-18617
Index: RPI-18617
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Regular price €23.85 Price €23.85

What are HAT overlays, and what is their purpose?

HAT overlays are rectangular boards with dimensions of 65mm x 56mm. They are distinguished by rounded corners, as well as holes for fixing them to the case. In addition, the HAT overlay has a 40-pin GPIO connector that is compatible with Raspberry Pi. Automatic system configuration is possible with ID_SD and ID_SC pins. They connect via the I2C interface to the EEPROM memory, which contains configuration software on all GPIO pins, but also Device Tree files. These files are necessary for automatic software installation via Linux because they contain a description of a HAT board.

Our shop offers HAT overlays in different variants, which allows us to match them to a specific version of Raspberry Pi, both the latest and older ones, which are still used by many users. This way, you can be sure that the overlay is compatible with the device, and thus the whole thing will work smoothly and safely.

What should you know about the GPIO extension?

GPIO, which is actually General Purpose Input Output, is the basic parameter of Raspberry Pi. Digital GPO pins have two statuses, i.e. ON and OFF, sometimes also have a receiving direction. If we know and use the appropriate programming language, such as JavaScript or Python, we can control their direction and status. GPIOs are designed to operate at a voltage of 3.3 V, and the maximum current load is 16 mA. So we can power up to two LEDs from a single pin. However, we will need external components in this case, which already uses more power.

GPIO connects Raspberry Pi with Hat overlays. The 40-pin connector allows you to connect external devices, with it you can transmit the output signals needed to control external processes. It is also needed to receive input signals. GPIO extensions, which take the form of HAT overlays, allow you to use Raspberry Pi in many areas of your life. They give you the opportunity to create a LED lighting controller, which is today considered not only the most energy-efficient light source but also the smartest, of course, if we connect it with the controllers. HAT overlays also support the creation of meteorological stations with sensors of temperature, precipitation, wind speed and other weather parameters. We will also use GPIO extensions in designing, among others, drivers for electric gate motor. GPIO extension has also found its application in monitoring and irrigation systems. This means that Raspberry Pi is perfectly suited for modern smart construction. All this thanks to HAT overlays and GPIO extensions.

Create a sound system in your car, a home monitoring system, a weather station or simply improve your everyday comfort with smart lighting. Check our offer of HAT overlays!