Raspberry Pi can be both a programming learning device and an element of electrical installation or building automation. External devices allow us to modify the purpose and capabilities of the minicomputer freely. All of this is due to GPIO connectors, which we use to connect compatible external accessories to Raspberry. As a result, advanced controllers with an interface that is complemented by buttons and LCD display are created. This versatility of the Raspberry Pi is one of the reasons why the computer enjoys unflagging popularity and interest since its first appearance on the market. This event took place in 2012. Since then, the manufacturer has developed several Raspberry Pi models, which differ in terms of parameters, application and additional elements, so they have more or less extensive features. Below we present the offer of HAT overlays and GPIO connectors. Discover what benefits you can gain from them and how your Raspberry Pi will change when you use them.
Controller:bit extension for BBC micro:bit - SparkFun DEV-16129
Index: SPF-09496
- Reduced price
- Promotion
- Reduced price
- Promotion
RPi Zero GPIO extensions and HAT
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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...
Index: RPI-19537
Index: RPI-19537
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
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...
Index: RPI-13066
Index: RPI-13066
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
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
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...
Index: RPI-18616
Index: RPI-18616
RS485 CAN HAT - overlay for Raspberry Pi - Waveshare 14882
Shield for Raspberry Pi, version 4B / 3B+ / 3B / 2B / Zero / Zero W with system SN65HVD230 which allows communication between CAN and SPI and the SP3485 system that...
Index: WSR-12532
Index: WSR-12532
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...
Index: SPF-13062
Index: SPF-13062
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.
Index: MOD-02607
Index: MOD-02607
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
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
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...
Index: MOD-02717
Index: MOD-02717
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
The module with the HAT shield for Raspberry Pi is equipped with eight HLS8L relays with a coil powered with a voltage of 5 V along with optoelectronic insulation. The system...
Index: WSR-13301
Index: WSR-13301
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
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
Proto Board for Raspberry Pi Zero
Board allows independent creation of electronic circuits. Connected directly to the GPIO pins of the Raspberry Pi minicomputer in a version Zero.
Index: MSX-05794
Index: MSX-05794
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
HiFiBerry DAC2 HD - sound card for Raspberry Pi 4B/3B+/3B
High quality sound card for Raspberry Pi with DAC. Overlay mounted directly on GPIO Raspberry Pi pins. Equipped with a high quality Burr-Brown 192 kHz / 24-bit DAC . There are...
Index: RHF-17197
Index: RHF-17197
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
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...
Index: RHF-07927
Index: RHF-07927
- Reduced price
- Promotion
Breakout Pi Plus - prototype board for Raspberry Pi
Board allows for self-creation of electronic circuits. It is connected directly to the GPIO pins of the Raspberry Pi minicomputer. It has led-out pins - separately in groups,...
Index: ABE-11710
Index: ABE-11710
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...
Index: RPI-18615
Index: RPI-18615
ADC Pi MCP3424 - 8-channel A/D converter
Module with high precision A/C converter in the form of shields for GPIO connectors of Raspberry Pi. It has 8 17-bit channels, analog outputs operating in mode Single Ended...
Index: ABE-11715
Index: ABE-11715
See also
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!