--- product_id: 324523323 title: "HCDC RPi GPIO Status LED & Terminal Block Breakout Board HAT for Raspberry Pi A+ 3A+ B+ 2B 3B 3B+ 4B" brand: "hcdc" price: "β‚±7252" currency: PHP in_stock: true category: "Hcdc" url: https://www.desertcart.ph/products/324523323-hcdc-rpi-gpio-status-led-and-terminal-block-breakout-board store_origin: PH region: Philippines --- # Ultra-low 0.1mA LED current 40 GPIO status LEDs 3.5mm terminal block pitch HCDC RPi GPIO Status LED & Terminal Block Breakout Board HAT for Raspberry Pi A+ 3A+ B+ 2B 3B 3B+ 4B **Brand:** hcdc **Price:** β‚±7252 **Availability:** βœ… In Stock ## Summary > πŸš€ Elevate your Pi projects with real-time GPIO clarity and pro-grade connectivity! ## Quick Answers - **What is this?** HCDC RPi GPIO Status LED & Terminal Block Breakout Board HAT for Raspberry Pi A+ 3A+ B+ 2B 3B 3B+ 4B by hcdc - **How much does it cost?** β‚±7252 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/324523323-hcdc-rpi-gpio-status-led-and-terminal-block-breakout-board) ## Best For - hcdc enthusiasts ## Why This Product - Trusted hcdc brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Plug & Play Ready:** Pre-soldered and assembled HAT compatible with all Raspberry Pi A+/3A+/B+/2B/3B/3B+/4B modelsβ€”no hassle setup. - β€’ **Robust Connectivity:** 3.5mm pitch terminal blocks support 26-16 AWG wires with secure M2 steel screws and copper contacts. - β€’ **Instant GPIO Insight:** One-to-one LED mapping with Raspberry Pi 40-pin header for real-time logic level monitoring. - β€’ **Power & Signal Clarity:** Distinct blue (5V), red (3.3V), and green (GPIO) LEDs ensure you never miss a voltage or signal change. - β€’ **Sleek, Low-Impact Design:** Each LED draws only 0.1mA, preserving GPIO integrity without interference. ## Overview The HCDC RPi GPIO Status LED & Terminal Block Breakout Board HAT is a precision-engineered accessory for Raspberry Pi models A+ through 4B. Featuring 40 LEDs that visually represent GPIO pin states with color-coded power indicators, it offers instant, intuitive debugging and monitoring. Its low 0.1mA LED current ensures no interference with GPIO signals. The breakout board includes robust 3.5mm pitch terminal blocks compatible with a wide wire gauge range, secured by M2 steel screws and copper contacts. Fully assembled and soldered, this HAT streamlines prototyping and development with professional-grade build quality and seamless plug-and-play integration. ## Description 1, The item has been soldered and assembled. Support for Raspberry Pi A+ 3A+ B+ 2B 3B 3B+ 4B 2, GPIO status LED and power 5V / 3.3V indication. GPIO output or input level high LED on, output or input level low LED off. 5V blue, 3.3V red, GPIOs green. The position of the LED is in a one-to-one correspondence with the position of the Raspberry Pi 2x20pin connector, and the logic level of the GPIO can be observed very quickly and intuitively. The driving current of each LED is only 0.1mA, so you don't have to worry about it affecting the read and write status of GPIO. 3, Terminal block pitch 3.5mm/0.138", wire size range 26AWG to 16AWG, strip length 5mm, screw M2 steel, pin header and cage copper. 2 x 20 pins expansion pin header, height 8mm/0.32" 4, Packing list: 1x terminal block breakout module, 4x M2.5x16mm nylon standoffs, 4x M2.5x6mm nylon standoffs, 4x M2.5 nylon nuts(NOTE: the item not include Raspberry Pi Board). 5, CAD 3D (pdf): https://m.media-desertcart.com/images/I/B1Is+sAHViS.pdf ## Features - The item has been soldered and assembled. Support for Raspberry Pi A+ 3A+ B+ 2B 3B 3B+ 4B - GPIO status LED and power 5V / 3.3V indication. GPIO output or input level high LED on, output or input level low LED off. 5V blue, 3.3V red, GPIOs green. The position of the LED is in a one-to-one correspondence with the position of the Raspberry Pi 2x20pin connector, and the logic level of the GPIO can be observed very quickly and intuitively. The driving current of each LED is only 0.1mA, so you don't have to worry about it affecting the read and write status of GPIO. - Terminal block pitch 3.5mm/0.138", wire size range 26AWG to 16AWG, strip length 5mm, screw M2 steel, pin header and cage copper. 2 x 20 pins expansion pin header, height 8mm/0.32". - Packing list: 1x terminal block breakout module, 4x M2.5x16mm nylon standoffs, 4x M2.5x6mm nylon standoffs, 4x M2.5 nylon nuts(NOTE: the item not include Raspberry Pi Board). - CAD 3D (pdf): https://m.media-desertcart.com/images/I/B1Is+sAHViS.pdf ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08RDYDG6X | | Brand Name | HCDC | | Centerline Length | 3.5 Millimeters | | Connector Type | Screw | | Customer Reviews | 4.7 4.7 out of 5 stars (321) | | Item Weight | 0.01 Ounces | | Manufacturer | Xiken Electronic Technology Co., Ltd. | | Material Type | Copper | | Model | HD040 | | Mounting Type | PCB Mount | | Number Of Contacts | 40 | | Number Of Poles | 20 | | Number of Positions | 40 | | Part Number | HD040 | | Pitch | 3.5 Millimeters | | Voltage | 3.3 Volts | ## Product Details - **Connector type:** Screw - **Item pitch:** 3.5 Millimeters - **Material:** Copper - **Mounting type:** PCB Mount - **Number of contacts:** 40 ## Images ![HCDC RPi GPIO Status LED & Terminal Block Breakout Board HAT for Raspberry Pi A+ 3A+ B+ 2B 3B 3B+ 4B - Image 1](https://m.media-amazon.com/images/I/81qX5HPfs6L.jpg) ## Questions & Answers **Q: has this been tested with POE hats or any other existing hats?** A: I originally installed a 3 relay contactor hat, but quickly grew out of that. I had to upgrade the power supply (Mean Well MDR-60-5) to 60 watts which powers the Pi (bypassing the micro USB port), 16 relay contactors (not all used), 8 sensors, and 4 3.3v step down regulators. The Pi is not a very good power source, especially 3.3v. All the gear is mounted on C45 DIN rails to avoid breadboards. All wire junctions are screw down like the this hat. Also the LEDs were very helpful in debugging. The code and it's relationship to the GPIO is quite complex. Latency and hysteresis were an ongoing challenge. I wouldn't cover the LEDs with another hat. **Q: According to diagram, the posts appear to be one way (diode) from the gpio head. can i send signal back to the pi from this breakout?** A: The diode is a led. Set the GPIO pin of your choice to output and the led will show the state of the output of that GPIO pin. Set the GPIO pin of your choice to input and the led will show the state of whatever is input to that GPIO pin. **Q: What are the length and width of the connector that fits onto the 40-pin header? I want to see if it will fit through the slot in the top of my case.** A: This is not the answer I was looking for. I would like to see if I can use this breakout box with the cover installed on my Raspberry Pi case. It has a slot 55 mm long X 8 mm wide. Will the header connector fit through this slot? **Q: Will it work with Pi Zero W?** A: Yes, the item can support Pi Zero W, But only two screw holes can be fixed. ## Frequently Bought Together - HCDC RPi GPIO Status LED & Terminal Block Breakout Board HAT for Raspberry Pi A+ 3A+ B+ 2B 3B 3B+ 4B - Raspberry Pi 4 Model B 2019 Quad Core 64 Bit WiFi Bluetooth (4GB) - Freenove Breakout Board for Raspberry Pi 5 / 4B / 3B+ / 3B / 3A+ / 2B / 1B+ / 1A+ / Zero 2 W/Zero W/Zero, Terminal Block Shield HAT with Pin Header, GPIO Status LED --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ph/products/324523323-hcdc-rpi-gpio-status-led-and-terminal-block-breakout-board](https://www.desertcart.ph/products/324523323-hcdc-rpi-gpio-status-led-and-terminal-block-breakout-board) --- *Product available on Desertcart Philippines* *Store origin: PH* *Last updated: 2026-10-11*