# Watermuseum stromenland station ## Description Teensy4.0 Flow Meter Interface with LED Driver and Signal Conditioning ## Project Details - **Owner:** peteruithoven - **Created:** 11/4/2025 - **Last Updated:** 11/6/2025 - **Visibility:** Public - **System Architecture:** graph LR subgraph Flow_Meters J1[Flow Meter A (J1)] J2[Flow Meter B (J2)] end subgraph Pressure_Sensor J3[Pressure Sensor (J3)] end J1 -->|Signal| R1(R1 P1) R1 --> DividerA DividerA -->|To Teensy Pin17| TEENSY1_17(TEENSY1:17) DividerA --> R2(R2 P1) R2 --> GND J2 -->|Signal| R3(R3 P1) R3 --> DividerB DividerB -->|To Teensy Pin18| TEENSY1_18(TEENSY1:18) DividerB --> R4(R4 P1) R4 --> GND FiveV(5V) --> U1_VCC[U1 VCC] U1_VCC --> U1_UC(SN74AHCT125N) U1_UC -->|1Y| R5(R5 P1) R5 --> J4_LED(J4 PIN3) FiveV --> C1_P1[C1 P1] GND --> C1_P2[C1 P2] C1_P1 --> C1[680µF] C1 --> C1_P2 FiveV --> J1_5V[J1 PIN1] GND --> J1_GND[J1 PIN2] FiveV --> J2_5V[J2 PIN1] GND --> J2_GND[J2 PIN2] ThreeV(3.3V) --> J3_3V[J3 PIN1] GND --> J3_GND[J3 PIN2] - **Copies:** 2 ## Key Components ### — [M3 Mounting Hole](https://www.flux.ai/vasyl/m3-mounting-hole.md) - Product Info Url: https://www.mcmaster.com/screws/drive-style~torx/rounded-head-style~pan/material~steel/specifications-met~iso-7045/thread-size~m3/finish~zinc-plated/ **Pins:** - terminal ### — [M3 Mounting Hole](https://www.flux.ai/vasyl/m3-mounting-hole.md) - Product Info Url: https://www.mcmaster.com/screws/drive-style~torx/rounded-head-style~pan/material~steel/specifications-met~iso-7045/thread-size~m3/finish~zinc-plated/ **Pins:** - terminal ### — [M3 Mounting Hole](https://www.flux.ai/vasyl/m3-mounting-hole.md) - Product Info Url: https://www.mcmaster.com/screws/drive-style~torx/rounded-head-style~pan/material~steel/specifications-met~iso-7045/thread-size~m3/finish~zinc-plated/ **Pins:** - terminal ### J1 - Pressure — [XY301V-A-5.0-3P](https://www.flux.ai/jharwinbarrozo/xy301v-a-50-3p.md) - Manufacturer Name: Ningbo Xinlaiya Elec. - Manufacturer Part Number: XY301V-A-5.0-3P - Role: Connector - Role Details: 3-pin screw terminal blocks for Flow A, Flow B, Pressure sensor, and LED strip - Datasheet URL: https://www.lcsc.com/datasheet/lcsc_datasheet_2411121455_Ningbo-Xinlaiya-Elec--XY301V-A-5-0-3P_C557652.pdf **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] - PIN3 [pin 3] ### J2 - Flow meter A — [XY301V-A-5.0-3P](https://www.flux.ai/jharwinbarrozo/xy301v-a-50-3p.md) - Role: Connector - Role Details: 3-pin screw terminal blocks for Flow A, Flow B, Pressure sensor, and LED strip - Manufacturer Name: Ningbo Xinlaiya Elec. - Datasheet URL: https://www.lcsc.com/datasheet/lcsc_datasheet_2411121455_Ningbo-Xinlaiya-Elec--XY301V-A-5-0-3P_C557652.pdf - Manufacturer Part Number: XY301V-A-5.0-3P **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] - PIN3 [pin 3] ### J3 - Flow meter B — [XY301V-A-5.0-3P](https://www.flux.ai/jharwinbarrozo/xy301v-a-50-3p.md) - Role Details: 3-pin screw terminal blocks for Flow A, Flow B, Pressure sensor, and LED strip - Manufacturer Part Number: XY301V-A-5.0-3P - Datasheet URL: https://www.lcsc.com/datasheet/lcsc_datasheet_2411121455_Ningbo-Xinlaiya-Elec--XY301V-A-5-0-3P_C557652.pdf - Manufacturer Name: Ningbo Xinlaiya Elec. - Role: Connector **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] - PIN3 [pin 3] ### J4 - Led strip — [XY301V-A-5.0-3P](https://www.flux.ai/jharwinbarrozo/xy301v-a-50-3p.md) - Manufacturer Part Number: XY301V-A-5.0-3P - Datasheet URL: https://www.lcsc.com/datasheet/lcsc_datasheet_2411121455_Ningbo-Xinlaiya-Elec--XY301V-A-5-0-3P_C557652.pdf - Role Details: 3-pin screw terminal blocks for Flow A, Flow B, Pressure sensor, and LED strip - Role: Connector - Manufacturer Name: Ningbo Xinlaiya Elec. **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] - PIN3 [pin 3] ### J5 Power — [XY301V-A-5.0-2P](https://www.flux.ai/jharwinbarrozo/xy301v-a-50-2p.md) - Role: Connector - Manufacturer Part Number: XY301V-A-5.0-2P - Role Details: 2-pin screw terminal for 5V and GND rails - Manufacturer Name: Ningbo Xinlaiya Elec. **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] ### TEENSY — [Teensy 4.0](https://www.flux.ai/vasy_skral/teensy-4p0.md) - Part Type: Evaluation Platform - Manufacturer Name: SparkFun Electronics - Manufacturer Part Number: DEV-15583 - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Sparkfun%20PDFs/DEV-15583_Web.pdf - Symbol Style: Parametric **Pins:** - 0 [pin 0] - 1 [pin 1] - 10 [pin 10] - 11 [pin 11] - 12 [pin 12] - 13 [pin 13] - 14 [pin 14] - 15 [pin 15] - 16 [pin 16] - 17 [pin 17] - 18 [pin 18] - 19 [pin 19] - 2 [pin 2] - 20 [pin 20] - 21 [pin 21] - 22 [pin 22] - 23 [pin 23] - 3 [pin 3] - 3.3V_1 [pin 3.3V_1] - 3.3V_2 [pin 3.3V_2] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] - 7 [pin 7] - 8 [pin 8] - 9 [pin 9] - G1 [pin G1] - G2 [pin G2] - G3 [pin G3] - ON/OFF [pin ON-OFF] - PROGRAM [pin PGM] - VBAT [pin VBAT] - VIN [pin VIN] ### U1 — [SN74AHCT125N](https://www.flux.ai/lcsc/sn74ahct125n.md) - Role Details: Level shifting MCU data signal for LED strip - Role: Logic-level Shifting - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1912111437_Texas-Instruments-SN74AHCT125N_C354152.pdf - Product Info Url: https://lcsc.com/product-detail/Others_Texas-Instruments-TI-SN74AHCT125N_C354152.html - LCSC Part Number: C354152 - Manufacturer Name: TI(德州仪器) - JLCPCB Part Class: Extended Part - Package or Case Code: PDIP-14_L19.3-W6.4-P2.54-LS7.6-BL - Manufacturer Part Number: SN74AHCT125N - 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] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/peteruithoven/watermuseum-stromenland-station](https://www.flux.ai/peteruithoven/watermuseum-stromenland-station).* --- *Generated from [https://www.flux.ai/peteruithoven/watermuseum-stromenland-station](https://www.flux.ai/peteruithoven/watermuseum-stromenland-station)*