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.
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Monostable ON-OFF switch - PBW-16BPD - 2A 250V - flat red point
Index: AKS-10816
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HDMI - HDMI adapter for Raspberry Pi - 2pcs - Uctronics U6141
Index: ACM-20193
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PicoBricks Base Kit - development kit for Raspberry Pi Pico
Index: RBI-22767
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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
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
Expander of GPIO leads for Raspberry PI 4/3/2/B+ with clamps
An expansion board that allows you to easily connect the modules to the GPIO pins on a Raspberry Pi. It has goldpin connectors and clamps with push button.
Index: MOD-07151
Index: MOD-07151
Raspberry PI 4/3/B+/2 GPIO Expansion Board E1 - blue
The board provides the connection of the three modules to each of the GPIO pins of the Raspberry Pi. It has 3 rows of goldpin connectors, 40 pieces in each.
Index: MOD-07149
Index: MOD-07149
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
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...
Index: UCC-02556
Index: UCC-02556
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
GPIO pin header expander for Raspberry Pi 3/2 / B + with quick couplers - cascade
An expansion board that allows you to easily connect the modules to the GPIO pins on a Raspberry Pi. Board is combined with minicomputer via 40-strip ribbon . It has goldpin...
Index: DNG-11800
Index: DNG-11800
The Power over Ethernet HAT (C) is a module in the form of a HAT overlay that is designed for the Raspberry Pi. It is compatible with 3B+ and 4B versions of the minicomputer. It...
Index: WSR-18771
Index: WSR-18771
Extension GPIO Raspberry Pi 3/2/B+ to the contact plate + tape
The module allows connection of the GPIO leads of the minicomputer Raspberry Pi 3, 2 and B + to popular breadboards with 830 and 400 holes, using an attached to the set,...
Index: RPI-02892
Index: RPI-02892
Grove Base Kit for Raspberry Pi 4B/3B+ a set for beginners
Grove it modular to create simple projects using components based on the same interface. The kit includes Grove Base Hat + 10 modules and sensors.
Index: SEE-14420
Index: SEE-14420
Raspberry Pi DAC Pro - sound card for Raspberry Pi 4B/3B+/3B
The Raspberry Pi DAC Pro is based on the Burr Brown PCM5242 32-bit / 384 kHz converter, allows for Full HD 24-bit / 192 kHz audio playback. The module is equipped with two...
Index: RPI-18616
Index: RPI-18616
MCP23017 Expansion Board - 16 I/O - for Arduino and Raspberry Pi - Waveshare 15391
Expander of pins on the basis of the MCP23017 system, it extends the capabilities of the Arduino or Raspberry Pi with additional 16 pins of I/O. It communicates via I2C...
Index: WSR-13466
Index: WSR-13466
ADC ADS1263 converter 32-bit - 10-channel - overlay for Raspberry Pi - Waveshare 18983
High precision ADC in form of Raspberry Pi minicomputer frontend, also compatible with Nvidia's Jetson Nano platform. A powerful ADS1263 chip is responsible for the operation...
Index: WSR-19042
Index: WSR-19042
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
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
LTE GPS HAT - LTE / GPRS / GPS SIM7600E-H - for Raspberry 4B/3B+/3B/2B/Zero - Waveshare 14952
Shield for Raspberry Pi that allows you to send text messages and create calls in the GSM network. It also has a GPS module. It supports LTE CAT4 up to 150 Mbps. It...
Index: WSR-12533
Index: WSR-12533
Hub USB Hat - 4-port hub for Raspberry Pi 4B/3B+/3B/Zero - Waveshare 12694
Hat for the Raspberry Pi that adds 4 USB ports and a converter USB-UART. The device has dimensions of 65 x 30 mm, it works with Raspberry Pi 4B/3B+/3B and Zero and Zero W.
Index: WSR-08870
Index: WSR-08870
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
Power over Ethernet HAT (B) is an overlay module designed for Raspberry Pi minicomputer 3B+ and 4B versions . It provides both an 802.3af network connection and supplies...
Index: WSR-19592
Index: WSR-19592
Uninterruptible power supply UPS - Power adapter for Raspberry Pi - 5 V - Waveshare 18306
UPS power supply in the form of an overlay for Raspberry Pi , which brings extra power to the module in case of power failure or while traveling. It is powered by two 18650...
Index: WSR-19046
Index: WSR-19046
HiFiBerry DAC+ RCA Zero for 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, the converter of quality ESS DAC has a resolution of...
Index: RHF-07482
Index: RHF-07482
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
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!
