# Raspberry Pi LED Controller HAT ## Description Raspberry Pi 3B+ HAT providing three independent 5 V logic-level addressable LED data outputs, with external strip/ring power kept off the Pi rail and shared ground reference. ## Project Details - **Owner:** 99wesley99 - **Created:** 8/19/2026 - **Last Updated:** 8/20/2026 - **Visibility:** Public ## Key Components ### D1 — [PESD5V0S1BA,115](https://www.flux.ai/jecstronic/pesd5v0s1bac115~507.md) - Manufacturer Name: Nexperia USA Inc. - Manufacturer Part Number: PESD5V0S1BA,115 - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Clamp exposed 5V LED data output to ground during ESD - Role: Protection - Functional Group: Output Protection - Datasheet URL: https://assets.nexperia.com/documents/data-sheet/PESD5V0S1BA.pdf - Part Type: Diode **Pins:** - A1 [pin 1] - A2 [pin 2] ### D2 — [PESD5V0S1BA,115](https://www.flux.ai/jecstronic/pesd5v0s1bac115~507.md) - Functional Group: Output Protection - Part Type: Diode - Datasheet URL: https://assets.nexperia.com/documents/data-sheet/PESD5V0S1BA.pdf - Role: Protection - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: PESD5V0S1BA,115 - Manufacturer Name: Nexperia USA Inc. - Role Details: Clamp exposed 5V LED data output to ground during ESD **Pins:** - A1 [pin 1] - A2 [pin 2] ### D3 — [PESD5V0S1BA,115](https://www.flux.ai/jecstronic/pesd5v0s1bac115~507.md) - Manufacturer Part Number: PESD5V0S1BA,115 - Manufacturer Name: Nexperia USA Inc. - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://assets.nexperia.com/documents/data-sheet/PESD5V0S1BA.pdf - Role Details: Clamp exposed 5V LED data output to ground during ESD - Functional Group: Output Protection - Role: Protection - Part Type: Diode **Pins:** - A1 [pin 1] - A2 [pin 2] ### J1 — [Adafruit 2222 Raspberry Pi Header](https://www.flux.ai/kofron/adafruit-2222-raspberry-pi-header~49.md) - Connector Type: Headers and Wire Housings - Connector Rows: 2 - Functional Group: Raspberry Pi Interface - Connector Positions: 40 - Role Details: Raspberry Pi 2x20 non-stacking female HAT socket - Connector Pitch: 2.54mm - Connector Gender: Female **Pins:** - 3v3 [pin 17] - 3v3 [pin 1] - 5V PWR [pin 2] - 5V PWR [pin 4] - GPIO 0 (HAT EEPROM i2c Data) [pin 27] - GPIO 1 (HAT EEPROM i2c Clock) [pin 28] - GPIO 10 (SPI0 MOSI) [pin 19] - GPIO 11 (SPI0 SCLK) [pin 23] - GPIO 12 (PWM0) [pin 32] - GPIO 13 (PWM1) [pin 33] - GPIO 14 (UART Transmit) [pin 8] - GPIO 15 (UART Receive) [pin 10] - GPIO 16 [pin 36] - GPIO 17 [pin 11] - GPIO 18 (PCM Clock) [pin 12] - GPIO 19 (PCM Frame Sync) [pin 35] - GPIO 20 (PCM Data-In) [pin 38] - GPIO 21 (PCM Data-Out) [pin 40] - GPIO 22 [pin 15] - GPIO 23 [pin 16] - GPIO 24 [pin 18] - GPIO 25 [pin 22] - GPIO 26 [pin 37] - GPIO 27 [pin 13] - GPIO 5 [pin 29] - GPIO 6 [pin 31] - GPIO 7 (SPI Chip Select 1) [pin 26] - GPIO 8 (SPI Chip Select 0) [pin 24] - GPIO 9 (SPI0 MISO) [pin 21] - GPIO2 (I2C1 SDA) [pin 3] - GPIO3 (I2C1 SCL) [pin 5] - GPIO4 (GPCLK0) [pin 7] - Ground [pin 25] - GROUND [pin 30] - GROUND [pin 6] - GROUND [pin 20] - GROUND [pin 39] - GROUND [pin 9] - GROUND [pin 34] - GROUND [pin 14] ### J2 — [691311700102](https://www.flux.ai/adrian95/691311700102~52f.md) - Role Details: STRIP 1 connector: pin 1 DATA ONLY, pin 2 GND; never connect 12V - Functional Group: Output Channel 1 - Connector Type: Terminal Blocks - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Manufacturer Name: Würth Elektronik - Connector Pitch: 5mm - Manufacturer Part Number: 691311700102 - Datasheet URL: https://www.we-online.com/katalog/datasheet/6913117001xx.pdf - Connector Positions: 2 **Pins:** - 1 [pin 1] - 2 [pin 2] ### J3 — [691311700102](https://www.flux.ai/adrian95/691311700102~52f.md) - Connector Pitch: 5mm - Functional Group: Output Channel 2 - Connector Type: Terminal Blocks - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Connector Positions: 2 - Manufacturer Name: Würth Elektronik - Manufacturer Part Number: 691311700102 - Role Details: STRIP 2 connector: pin 1 DATA ONLY, pin 2 GND; never connect 12V - Datasheet URL: https://www.we-online.com/katalog/datasheet/6913117001xx.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] ### J4 — [691311700102](https://www.flux.ai/adrian95/691311700102~52f.md) - Connector Pitch: 5mm - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Connector Positions: 2 - Connector Type: Terminal Blocks - Functional Group: Ring External Power - Role Details: RING 5V INPUT: pin 1 regulated +5V external, pin 2 GND - Datasheet URL: https://www.we-online.com/katalog/datasheet/6913117001xx.pdf - Manufacturer Name: Würth Elektronik - Manufacturer Part Number: 691311700102 **Pins:** - 1 [pin 1] - 2 [pin 2] ### J5 — [1984976](https://www.flux.ai/adrian95/1984976~y3s.md) - Connector Positions: 3 - Manufacturer Name: Phoenix Contact - Role Details: RING OUTPUT: pin 1 external +5V, pin 2 GND, pin 3 buffered DATA - Part Type: Connector - Manufacturer Part Number: 1984976 - License: https://creativecommons.org/licenses/by/4.0/ - Functional Group: Output Channel 3 - Connector Type: Terminal Blocks - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/2515/COMBICON%20Spring-Cage%20PCB%20Term.%20Blocks.pdf - Connector Pitch: 3.5mm **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] ### U1 — [SN74AHCT125N](https://www.flux.ai/lcsc/sn74ahct125n~i0ta.md) - Role Details: Quad AHCT buffer powered from Pi 5V - Manufacturer Part Number: SN74AHCT125N - Functional Group: Level Shifting - Manufacturer Name: TI(德州仪器) - Part Type: Buffers / Drivers - Role: Logic-level Shifting - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1912111437_Texas-Instruments-SN74AHCT125N_C354152.pdf - JLCPCB Part Class: Extended Part - LCSC Part Number: C354152 - Product Info Url: https://lcsc.com/product-detail/Others_Texas-Instruments-TI-SN74AHCT125N_C354152.html - Package or Case Code: PDIP-14_L19.3-W6.4-P2.54-LS7.6-BL **Pins:** - #1OE [pin 1] - #2OE [pin 4] - #3OE [pin 10] - #4OE [pin 13] - 1A [pin 2] - 1Y [pin 3] - 2A [pin 5] - 2Y [pin 6] - 3A [pin 9] - 3Y [pin 8] - 4A [pin 12] - 4Y [pin 11] - GND [pin 7] - VCC [pin 14] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/99wesley99/raspberry-pi-led-controller-hat~ji](https://www.flux.ai/99wesley99/raspberry-pi-led-controller-hat~ji).* --- *Generated from [https://www.flux.ai/99wesley99/raspberry-pi-led-controller-hat~ji](https://www.flux.ai/99wesley99/raspberry-pi-led-controller-hat~ji)*