Single-board mini computers from the Raspberry Pi series have gained recognition around the world. They are used by both home-type tinkerers and professional designers of programmable electronic devices. In 2019, the latest model appeared on sale - the Raspberry Pi 4B. Compared to previous models, Pi 4B has been equipped with an even more efficient quad-core processor Broadcom BCM2711 clocked at 1,5 GHz of frequency and for the first time, it consists two Micro HDMI outputs for external monitors instead of a single standard A-type HDMI connector. You can use the Raspberry Pi 4B in the same way as a standard PC for internet browsing and office work, as well as a driver for physical devices with electronic and mechanical systems, thanks to the versatile 40-pin GPIO connector. By using the GPIO connector in Raspberry Pi, you can easily create a home automation management centre, electrical drive controller, audiophile D-class amplifier, retro-style gaming machine, remote control apparatus for unmanned vehicles and much more! Sounds marvellous, isn't it? And it's still real to come true - just use the Raspberry Pi HAT hardware extension boards that are GPIO-compatible with Raspberry Pi 4B!
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Raspberry Pi 4B GPIO extensions and HAT
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Raspberry Pi PoE+ HAT - Power over Ethernet for Raspberry Pi 4B/3B+ - SC1022
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
Power over Ethernet HAT (E) is a shield for Raspberry Pi in version 3B+ and 4B . It allows you to simultaneously obtain a network connection in the 802.3af standard and to...
Index: WSR-22399
Index: WSR-22399
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
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
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
ReSpeaker Mic Array v2.0 by Seeed is another more extended version of ReSpeaker Mic Array v1. The board with built-in long-range microphone, capable of detecting voices at a...
Index: SEE-14133
Index: SEE-14133
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
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
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
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
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
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
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
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
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
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
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
Comprehensive control units for robotics projects
Kiedy tworzymy projekt robota, dobrze jest zadbać o jego dobre wyposażenie pod kątem układów sterowania. Znakomitym solution jest nakładka 4tronix RoboHAT. Ten moduł zawiera zestaw programowalnych wejść i wyjść, to których możesz podłączyć czujniki, buzzers, LEDs oraz sterownik silników elektrycznych i serwomechanizmów. Nakładka została starannie zmontowana i jest gotowa do podłączenia do Raspberry Pi bezpośrednio po unboxing. Zasilanie modułu może być podłączone poprzez złącze śrubowe ARK oraz gniazdo zasilające DC jack. Konstruktorzy udostępnili przykładowe programy i zestawy instrukcji w Pythonie, w oparciu o które użytkownik może poznać zasadę działania robotów. Z tego powodu, nakładkę RobotHAT szczególnie polecamy osobom rozpoczynającym przygodę z robotyką.
An interesting offer for music and electronics enthusiasts
Using the Pimoroni Piano HAT overlay, you can turn the Raspberry Pi 4B into a simple music synthesizer with keyboard and buttons. According to the standards in the hardware design of synthesizers and drum machines since the 1980s, this overlay supports MIDI protocol (Musical Instruments Digital Interface). The keyboard contains a single octave with a C1-C2 tonal range (13 notes). These are capacitive touch keys. In addition, the user has at his disposal buttons for changing the tonal range (Octave Up / Octave Down) and a button for selecting sound presets stored in memory. The Piano HAT overlay is equipped with a GPIO connector that is compatible with the Raspberry Pi 4B minicomputer hardware. A practical feature of the overlay is built-in LEDs that perform an educational function. All you have to do is follow which of the LEDs that are linked with keys are lights up to learn to play simple songs from scratch. The program implementing this function was written in Python and is pre-loaded into memory in the Piano HAT module. The alternative,,non-musical” project, which you can create by using this board is a whac-a-mole game.
A simple way to control electrical circuits powered by mains voltage
Also, SparkFun Electronics has prepared interesting hardware extensions for Raspberry Pi. The RELAYplate module contains seven Single-Pole Single-Throw Normally Opened electromechanical relays. With this overlay, you can control the circuits powered by a voltage of 120VAC or 30VDC. The overlay allows you to switch-on and switch-off the power supply of electric motors, pumps, fans, lighting, heaters and other electrical devices. The kit includes a protective cover to prevent accidental electric shock due to contact with high voltage circuits. At the same time, you can connect eight such modules together, which gives you the ability to control up to 56 circuits in parallel, independently of each other. The board is equipped with LEDs that indicate the state of contacts of individual relays. The RelayPLATE overlay is controlled by a 40-pin GPIO connector, the pin layout of which is compatible with most models of the Raspberry Pi minicomputer, including Pi 4B.