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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,...
4.9 (11)
Index: MOD-03790
Index: MOD-03790
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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...
5.0 (2)
Index: MSX-02927
Index: MSX-02927
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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....
4.8 (11)
Index: MSX-06117
Index: MSX-06117
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Regular price €2.50 Price €2.50

TV HAT tuner DVB-T - module with decoder for Raspberry Pi 4B/3B+/3B/Zero

Shield for Raspberry Pi which consists to the tuner of the terrestrial television. It enables the  reception of all available, uncoded channels of digital terrestrial...
4.5 (17)
Index: RPI-13066
Index: RPI-13066
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MAX98357A decoder stereo DAC I2S - SparkFun DEV-14809

The stereo decoder's module DAC to communicate through the I2S interface. Built-in class D amplifier can provide up to 3.2 W of power to the speakers or headphones with...
5.0 (2)
Index: SPF-13062
Index: SPF-13062
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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...
4.9 (6)
Index: SPF-02259
Index: SPF-02259
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IQaudIO DAC+ - sound card for Raspberry Pi 4B/3B+/3B

The sound card designed for the Raspberry Pi minicomputer provides high quality Full HD 24-bit/192 kHz audio with built-in hardware volume control via the Linux built-in...
4.9 (9)
Index: RPI-18615
Index: RPI-18615
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Regular price €25.90 Price €25.90

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

Raspberry Pi DAC Pro is based on a Burr Brown PCM5242 32-bit / 384 kHz converter , allowing for Full HD 24-bit / 192 kHz audio playback. The module is equipped with two...
5.0 (9)
Index: RPI-18616
Index: RPI-18616
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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...
4.7 (12)
Index: RPI-19537
Index: RPI-19537
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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...
5.0 (1)
Index: SPF-02275
Index: SPF-02275
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RPi Relay Board - 3 relays - cap for Raspberry Pi - Waveshare 11638

Cap fitted to connectors of Raspberry Pi GPIO in version 4B, 3B+, 3B, 2B, B+ and A+, with three relays with parameters of 250 V / 10 A. Board has a screw connector....
4.8 (5)
Index: WSR-06804
Index: WSR-06804
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Regular price €12.90 Price €12.90

Module ProtoPi Plus - extension for Raspberry Pi 4/3/2/B + to breadboard + ribbon wire

The module provides easy connection of all GPIO leads of the Raspberry minicomputer, version 4, 3, 2 and B+ with any breadboard, no soldering needed.
5.0 (4)
Index: MOD-02607
Index: MOD-02607
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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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Breakout Pi Zero - prototype board for Raspberry Pi Zero

The board allows you to create your own electronic circuits . It is connected directly to GPIO pins of Raspberry Pi minicomputer. It has separate pins, in groups, as well...
5.0 (1)
Index: ABE-11714
Index: ABE-11714
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MCP23017 - I2C 16-channel output expander

The system allows to increase the number of pins (up to 16 ) of the microcontroller (including minicomputer of Raspberry Pi). It communicates with the central unit via the I2C...
5.0 (1)
Index: UCC-02556
Index: UCC-02556
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Regular price €2.50 Price €2.50

IO Pi Plus MCP23017 - expander for Raspberry Pi - 32 I / O pins

An overlay for Raspberry based on MCP23017 chip adding 32 I/O pins to the minicomputer. Connects via I2C bus . The module has a selectable address, so you can cascade...
5.0 (2)
Index: ABE-11708
Index: ABE-11708
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Regular price €16.00 Price €16.00

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...
4.9 (5)
Index: UCC-06506
Index: UCC-06506
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MSX RTC DS1307 I2C - real time clock

Module with real time clock and backup battery (battery included). It allows you to read the time in hours, minutes, and seconds, date: month, day, year. The communication...
5.0 (3)
Index: MOD-02717
Index: MOD-02717
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HiFiBerry MiniAmp for Raspberry 4B/3B+/3/2/B+/A+/Zero

Shield, type Hat for Raspberry, version 4B, 3B+, 3B, 2B, A+, B, Zero with a built-in class D amplifier with a power of 3 W. The device supports speakers with an impedance of 8...
5.0 (1)
Index: RHF-07927
Index: RHF-07927
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ADS1115 16-Bit ADC - 4 Channel with Programmable Gain Amplifier STEMMA QT/Qwiic- Adafruit 1085

Module with analog to digital converter with 16-bit precision. Running at a speed of up to 860 samples per second. It has the ability to change the amplification of up to 16 x....
5.0 (2)
Index: ADA-08444
Index: ADA-08444
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HiFiBerry DAC+ RTC - sound card for Raspberry Pi 4B/3B+/3/2/B+/A+/Zero

Shield, type Hat for Raspberry, version 4B, 3B+, 3B, 2B, A+, B, Zero with RCA connectors. It is used in the device of high-quality, DAC Burr-Brown chip has a resolution of 24...
5.0 (4)
Index: RHF-12131
Index: RHF-12131
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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 /...
4.7 (5)
Index: ARG-15394
Index: ARG-15394
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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...
4.9 (6)
Index: PLL-02523
Index: PLL-02523
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Regular price €3.50 Price €3.50

HiFiBerry Amp2 amplifier of class D 60 W for Raspberry Pi 4B/3B+/3B/2/B+/A+

Cap type Hat for Raspberry version 4B, 3B+, 3B, 2B, A+, B with a built-in class D amplifier with power of 60 W. The device supports speakers with an impedance of 4 Ω to 8 Ω,...
5.0 (4)
Index: RHF-09886
Index: RHF-09886
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Regular price €67.90 Price €67.90

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!