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If you meant Raspberry Pi 40-pin GPIO (2x20, 2.54mm pitch) headers, these are the best fits:
Raspberry Pi 2x20 (40-pin) GPIO headers
- Standard 2x20 male header (great for Pi Zero or any board needing a through-hole GPIO header): Raspberry Pi GPIO Male Header - 2x20 ($1.55)
- Keyed/polarised boxed (shrouded) 2x20 for ribbon-cable style connections: Raspberry Pi GPIO Shrouded Header - 2x20 ($2.15)
- Stacking/extra-tall 2x20 female for HAT stacking/clearance:
- Low-profile HAT headers:
- Through-hole short female: GPIO Header for Raspberry Pi HAT - 2x20 Short Female Header ($4.20)
- SMT short female: SMT GPIO Header for Raspberry Pi HAT - 2x20 Short Female Header ($3.90)
- Extra reach/clearance female headers (extended height options):
Single-row “40-pin” breakaway strips (not 2x20)
If you meant one row of 40 pins (common for Arduino/prototyping), these are 2.54mm pitch breakaway strips:
- Arduino Male Pin Headers | 0.1 (2.54 mm) Straight Black ($3.75)
- Longer pins: 40 Pin Break Away Male Header- Long Straight-10 Pcs ($4.75)
- Right-angle: 40 Pin Break Away Male Header- Right Angle-10 Pcs ($3.75)
- Single-row female strip: 40 Pin Female Header Strip ($1.55)
Related (if you’re extending the Pi’s 40-pin header)
- 40-pin GPIO extender cable (2x20 to 2x20): 40 Pin GPIO Extension Cable for any 2x20 Pin Raspberry Pi - 150mm / 6 long ($7.00)
- Breakout/extension kit: GPIO Kit for Raspberry Pi Model B+ ($5.85)
(For completeness, if you meant jumper shunts rather than headers: 40 Pin Dual In-Line (DIL) / Jumpers ($2.30))
Showing 81-100 of 100 products
Gravity: Arduino Shield for Raspberry Pi B+/2B/3B/3B+/4B
The Gravity Arduino Shield for Raspberry Pi brings Arduino-compatible I/O to your Raspberry Pi B+, 2B, 3B, 3B+, or 4B. Built around the ATmega32u4 (Arduino Leonardo), it sits on top of your Pi and gives you access to all standard Arduino shields and sensors alongside the Pi's own GPIO, I2C, SPI, ...
MCP3424 18-Bit ADC-4 Channel with Programmable Gain Amplifier
A 4-channel, 18-bit delta-sigma analogue-to-digital converter (ADC) module based on the Microchip MCP3424. This module adds high-accuracy analogue input capability to Raspberry Pi, Arduino, and other microcontroller platforms over I2C. The onboard programmable gain amplifier (PGA) allows the mod...
Adafruit Feather M0 RFM69HCW Packet Radio - 868 or 915 MHz
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The Feather M0 RFM69HCW Packet Radio (868/915 MHz) combines the ATSAMD21G18 ARM Cortex M0+ processor with an SX1231-based RFM69HCW radio transceiver for wireless data communication at 868 or 915 MHz. The exact radio frequency is software-configurable, allowing you to tune dynamically for your reg...
Adafruit Feather M0 RFM69HCW Packet Radio - 433MHz
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The Feather M0 RFM69HCW Packet Radio (433 MHz) combines the ATSAMD21G18 ARM Cortex M0+ processor with an SX1231-based RFM69HCW radio transceiver for wireless data communication at 433 MHz. It includes built-in USB, LiPo battery charging, and the full Feather M0 pin set in a compact, portable form...
Adafruit Feather M0 RFM96 LoRa Radio - 433MHz
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The Feather M0 RFM96 LoRa Radio (433 MHz) combines the ATSAMD21G18 ARM Cortex M0+ processor with an SX1276-based LoRa radio transceiver for long-range wireless communication at 433 MHz. LoRa modulation delivers significantly greater range than conventional packet radio — over 2 km line-of-sight w...
Adafruit Feather M0 with RFM95 LoRa Radio - 900MHz
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The Feather M0 RFM95 LoRa Radio (900 MHz) combines the ATSAMD21G18 ARM Cortex M0+ processor with an SX1276-based LoRa radio transceiver for long-range wireless communication at 868 or 915 MHz. The exact frequency is software-configurable, allowing you to tune dynamically for your region's ISM ban...
Gravity: RS485 IO ExpansionShield for Arduino
Our IO expansion board is evolving, the RS485 IO Expansion Shield is now supporting Xbee and has colour coded pin header. It combines our popular Xbee shield with IO expansion shield. It even supports SD module card which provides the ultimate functional expansion for Arduino so far. As ...
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Adafruit Feather M0 WiFi with uFL - ATSAMD21 + ATWINC1500 [fw 19.4.4]
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The Feather M0 WiFi with uFL pairs the ATSAMD21G18 ARM Cortex M0+ processor with an ATWINC1500 Wi-Fi module, featuring a uFL connector instead of an on-board antenna. This allows you to connect an external 2.4 GHz antenna for improved range or custom antenna placement in enclosures. The ATWINC15...
Adafruit Feather M0 WiFi - ATSAMD21 + ATWINC1500
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The Feather M0 WiFi pairs the ATSAMD21G18 ARM Cortex M0+ processor with an ATWINC1500 Wi-Fi module for reliable 802.11b/g/n connectivity. The ATWINC1500 handles all Wi-Fi networking on a dedicated chip, freeing the main processor for your application code without the need to yield or share CPU ti...
RGB LED Breakout (5050)
This small size breakout is programmable full-color RGB LED for hobbyists, industrial designers, prototypers, and experimenters. It is designed to allow the easy addition of dynamic indicators, displays, and lighting to existing or new projects. Controlled by PWM channels can be available i...
RGB LED Breakout (3528)
This small size breakout is programmable full-color RGB LED for hobbyists, industrial designers, prototypers, and experimenters. It is designed to allow the easy addition of dynamic indicators, displays, and lighting to existing or new projects. Controlled by PWM channels can be available in s...
DFRduino Pro Mini V1.3(16M5V328)
The 5V DFduino Pro Mini V1.3(Arduino Pro Mini Compatible) is a microcontroller board based on the ATmega328.It is a 5V DFduino running the 16MHz bootloader (select 'Arduino Duemilanove w/ 328' within the Arduino software). It is an advance version of offical Arduino Pro Mini. The DFRd...
PCB of Arduino LCD Keypad Shield
This is the back panel pcb of 1602 Arduino LCD Shield. This shield allows you to place your own LCD onto this shield. It only requieres a 16x2 HD44780 compatible LCD. This Shield uses Arudino LCD4Bit library. The pcb is compatible with the following LCD: Basic 16x2 Character LCD -...
Arduino Leonardo
The Arduino Leonardo is a microcontroller board based on the ATmega32U4. Unlike previous Arduino boards, the ATmega32U4 has built-in USB communication, allowing the Leonardo to appear as a mouse and keyboard to a connected computer — in addition to a virtual serial/COM port. With 20 digital I/O ...
Adafruit Feather nRF52840 Express
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The Feather nRF52840 Express upgrades the nRF52 Bluefruit with the Nordic nRF52840 — featuring 1 MB flash, 256 KB SRAM, native USB, and Bluetooth Low Energy in a single chip. Native USB means no separate serial converter is needed; the chip handles CDC serial, and can also act as a HID keyboard, ...
OctoCam - Pi Zero W Project Kit
A cute, connected, cephalopod camera to stick on your window or sit on your shelf! The OctoCam kit has everything* you'll need, including a Pi Zero W, a super-small 5MP camera, a fun octopus acrylic mount with four suction cups, and a desk stand. It'll take you around 30 minutes to put it all ...
Pi-DAC PRO
Pi-DAC PRO, a new breed of audiophile DAC for the Raspberry Pi. With Phono (RCA), Heaphone (3.5mm) and support for Balanced / Differential output (for XLR use in Studio, or home studio), complete with PCB spacers and screws The Pi-DAC PRO plugs directly on the Raspberry Pi A+/B+/2/3, there’s n...
MCP4725 Breakout Board - 12-Bit DAC w/I2C Interface
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The MCP4725 breakout board provides a 12-bit digital-to-analogue converter (DAC) over I2C. Send a digital value and the VOUT pin outputs the corresponding analogue voltage — ideal for generating waveforms, adjustable bias points, or anywhere you need a true analogue output rather than PWM. The o...
Colorduino V1.4
This RGB LED dot-matrix driver is Arduino-compatible and designed for driving colourful LED matrix displays with hardware PWM support.It pairs the M54564 with a DM163 constant current driver, giving three 8+6-bit channels of hardware PWM control and freeing the ATmega328P from handling LED PWM in...
Black Magic Probe with JTAG Cable and Serial Cable - V2.1
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The Black Magic Probe V2.1 is a next-generation JTAG/SWD debugging tool for ARM Cortex microprocessors. Unlike traditional debug dongles, it doesn't require OpenOCD or STLink — the probe itself is a GDB server, emulated through USB serial. Simply connect via GDB and start debugging directly. It ...
