# CERILUME Phase 1 LED Controller 0f3b ## Description Low-voltage logic-only CERILUME Phase 1 LED controller using an Arduino Nano ESP32 plug-in module, 5V logic level shifting for WS2812/SK6812 data, microphone input header, and labeled test pads. LED power distribution and high-current switching are intentionally out of scope. ## Project Details - **Owner:** cerilume - **Created:** 6/12/2026 - **Last Updated:** 6/20/2026 - **Visibility:** Public - **Copies:** 2 ## Key Components ### J1 — [Pin Header 02x01 2.54mm Vertical](https://www.flux.ai/adrian95/pin-header-02x01-254mm-vertical~evn.md) - Allow Substitutes: Yes - Part Type: Connector - Role Details: LED data-only connector: pin 1 LED_DATA_5V, pin 2 GND; no LED power provided - Manufacturer Part Number: M20-9990245 - Manufacturer Name: Harwin - Role: Connector - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### J2 — [Pin Header 01x03 2.54mm Vertical](https://www.flux.ai/adrian95/pin-header-01x03-254mm-vertical~cp4.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Role: Connector - Manufacturer Name: Harwin - Role Details: Microphone header: pin 1 3V3_LOGIC, pin 2 MIC_SIGNAL to A0, pin 3 GND - Allow Substitutes: Yes - Manufacturer Part Number: M20-9990345 **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] ### J3 — [Pin Header 01x04 2.54mm Vertical i2c](https://www.flux.ai/hasanbasri93/pin-header-01x04-2p54mm-vertical-i2c~37.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Role: Logic-level Shifting - Manufacturer Name: Harwin - Role Details: LCD I2C header: pin 1 5V_LOGIC, pin 2 GND, pin 3 LCD_SDA_5V, pin 4 LCD_SCL_5V; expected LCD I2C address 0x27 - Manufacturer Part Number: M20-9990445 - Allow Substitutes: Yes **Pins:** - 5V [pin 1] - GND [pin 2] - SCL [pin 4] - SDA [pin 3] ### J4 — [IDC-Header 2x08 P2.54mm Vertical](https://www.flux.ai/adrian95/idc-header-2x08-p254mm-vertical~e9u.md) - Role Details: HUB75 16-pin signal connector only; provides 5 V logic signals and GND, not LED panel power - Manufacturer Part Number: Conn_02x08_Odd_Even - Role: Logic-level Shifting - Connector Pitch: 2.54mm - Connector Type: Headers and Wire Housings **Pins:** - Pin_1 - Pin_10 - Pin_11 - Pin_12 - Pin_13 - Pin_14 - Pin_15 - Pin_16 - Pin_2 - Pin_3 - Pin_4 - Pin_5 - Pin_6 - Pin_7 - Pin_8 - Pin_9 ### TP1 — [Generic Testpoint](https://www.flux.ai/jharwinbarrozo/generic-testpoint~esx.md) - Testpoint Size: 0.5 - Manufacturer Part Number: 5019 - Role: Test Point - Role Details: Labeled test pad for 5V_LOGIC - Allow Substitutes: Yes - Manufacturer Name: Keystone - Part Type: Test Point **Pins:** - P1 [pin 1] ### TP2 — [Generic Testpoint](https://www.flux.ai/jharwinbarrozo/generic-testpoint~esx.md) - Role: Test Point - Manufacturer Part Number: 5019 - Part Type: Test Point - Allow Substitutes: Yes - Manufacturer Name: Keystone - Testpoint Size: 0.5 - Role Details: Labeled test pad for 3V3_LOGIC **Pins:** - P1 [pin 1] ### TP3 — [Generic Testpoint](https://www.flux.ai/jharwinbarrozo/generic-testpoint~esx.md) - Manufacturer Name: Keystone - Manufacturer Part Number: 5019 - Part Type: Test Point - Testpoint Size: 0.5 - Role Details: Labeled test pad for GND - Allow Substitutes: Yes - Role: Test Point **Pins:** - P1 [pin 1] ### TP4 — [Generic Testpoint](https://www.flux.ai/jharwinbarrozo/generic-testpoint~esx.md) - Manufacturer Part Number: 5019 - Role: Test Point - Role Details: Labeled test pad for LED_DATA_5V - Testpoint Size: 0.5 - Part Type: Test Point - Manufacturer Name: Keystone - Allow Substitutes: Yes **Pins:** - P1 [pin 1] ### TP5 — [Generic Testpoint](https://www.flux.ai/jharwinbarrozo/generic-testpoint~esx.md) - Role Details: Labeled test pad for MIC_SIGNAL - Manufacturer Part Number: 5019 - Testpoint Size: 0.5 - Allow Substitutes: Yes - Part Type: Test Point - Role: Test Point - Manufacturer Name: Keystone **Pins:** - P1 [pin 1] ### U1 — [ABX00083](https://www.flux.ai/adrian95/abx00083~mdb.md) - Part Type: Development Board - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Arduino Nano ESP32 ABX00083 plug-in module socket; external USB-C powers Nano, header pins source 5V_LOGIC, 3V3_LOGIC, and GND buses - Role: Logic-level Shifting - Manufacturer Name: Arduino - Datasheet URL: https://docs.arduino.cc/resources/datasheets/ABX00083-datasheet.pdf - Manufacturer Part Number: ABX00083 **Pins:** - +3V3_ [pin 2] - A0 [pin 4] - A1 [pin 5] - A2 [pin 6] - A3 [pin 7] - A4 [pin 8] - A5 [pin 9] - A6 [pin 10] - A7 [pin 11] - BOOT0 [pin 3] - BOOT1 [pin 13] - D0/TX [pin 16] - D1/RX [pin 17] - D10_/_CS [pin 28] - D11_/_COPI [pin 29] - D12_/_CIPO [pin 30] - D13_/_SCK_ [pin 1] - D2 [pin 20] - D3 [pin 21] - D4 [pin 22] - D5 [pin 23] - D6 [pin 24] - D7 [pin 25] - D8 [pin 26] - D9 [pin 27] - GND_1 [pin 14] - GND_2 [pin 19] - RST [pin 18] - VBUS [pin 12] - VIN [pin 15] ### U2 — [SN74AHCT125DR](https://www.flux.ai/lcsc/sn74ahct125dr~kfnt.md) - Role: Logic-level Shifting - Role Details: Single channel used for WS2812/SK6812 data; unused channels disabled - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1809051431_Texas-Instruments-SN74AHCT125DR_C155176.pdf - JLCPCB Part Class: Extended Part - Manufacturer Part Number: SN74AHCT125DR - Package or Case Code: SOIC-14_L8.7-W3.9-P1.27-LS6.0-BL - LCSC Part Number: C155176 - Manufacturer Name: TI(德州仪器) - Product Info Url: https://lcsc.com/product-detail/74-Series_TI_SN74AHCT125DR_SN74AHCT125DR_C155176.html - Part Type: Buffers / Drivers **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] ### U3 — [PCA9306DCUT](https://www.flux.ai/jecstronic/pca9306dcut~atk.md) - Manufacturer Part Number: PCA9306DCUT - Role: Logic-level Shifting - Manufacturer Name: Texas Instruments - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Fpca9306 - Role Details: PCA9306 dual bidirectional I2C level translator for LCD_SDA/LCD_SCL, VREF1=3V3_LOGIC, high side=5V_LOGIC - Part Type: Integrated Circuit **Pins:** - EN [pin 8] - GND [pin 4] - SCL1 [pin 2] - SCL2 [pin 6] - SDA1 [pin 3] - SDA2 [pin 5] - VREF1 [pin 1] - VREF2 [pin 7] ### U4 — [SN74AHCT245PWRG3](https://www.flux.ai/lcsc/sn74ahct245pwrg3~mns2.md) - Role Details: HUB75 output buffer channels R1/G1/B1/R2/G2/B2/A/B; 3.3 V Nano GPIO inputs shifted to 5V_LOGIC outputs - Role: Logic-level Shifting - Manufacturer Part Number: SN74AHCT245PWRG3 - Manufacturer Name: TI(德州仪器) - Part Type: Universal Bus Function - Package or Case Code: TSSOP-20_L6.5-W4.4-P0.65-LS6.4-BL - LCSC Part Number: C2867332 **Pins:** - ~{OE} [pin 19] - A1 [pin 2] - A2 [pin 3] - A3 [pin 4] - A4 [pin 5] - A5 [pin 6] - A6 [pin 7] - A7 [pin 8] - A8 [pin 9] - B1 [pin 18] - B2 [pin 17] - B3 [pin 16] - B4 [pin 15] - B5 [pin 14] - B6 [pin 13] - B7 [pin 12] - B8 [pin 11] - DIR [pin 1] - GND [pin 10] - VCC [pin 20] ### U5 — [SN74AHCT245PWRG3](https://www.flux.ai/lcsc/sn74ahct245pwrg3~mns2.md) - LCSC Part Number: C2867332 - Package or Case Code: TSSOP-20_L6.5-W4.4-P0.65-LS6.4-BL - Role Details: HUB75 output buffer channels C/D/CLK/LAT/OE; 3.3 V Nano GPIO inputs shifted to 5V_LOGIC outputs; unused outputs NC - Role: Logic-level Shifting - Manufacturer Name: TI(德州仪器) - Manufacturer Part Number: SN74AHCT245PWRG3 - Part Type: Universal Bus Function **Pins:** - ~{OE} [pin 19] - A1 [pin 2] - A2 [pin 3] - A3 [pin 4] - A4 [pin 5] - A5 [pin 6] - A6 [pin 7] - A7 [pin 8] - A8 [pin 9] - B1 [pin 18] - B2 [pin 17] - B3 [pin 16] - B4 [pin 15] - B5 [pin 14] - B6 [pin 13] - B7 [pin 12] - B8 [pin 11] - DIR [pin 1] - GND [pin 10] - VCC [pin 20] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/cerilume/cerilume-phase-1-led-controller-0f3b~rn](https://www.flux.ai/cerilume/cerilume-phase-1-led-controller-0f3b~rn).* --- *Generated from [https://www.flux.ai/cerilume/cerilume-phase-1-led-controller-0f3b~rn](https://www.flux.ai/cerilume/cerilume-phase-1-led-controller-0f3b~rn)*