# Schematic Diagram of Railway Track Health Monitoring System ## Description Welcome to your new project. Imagine what you can build here. ## Project Details - **Owner:** laxmanyd - **Created:** 3/24/2026 - **Last Updated:** 3/24/2026 - **Visibility:** Public - **System Architecture:** ```mermaid flowchart TD RPI["Raspberry Pi 4"] MLX["MLX90614 Temp Sensor"] IR["IR Sensor"] BUZ["Buzzer"] LCD["16x2 LCD I2C"] LORA["SX1278 LoRa"] RPI <-->|I2C SDA SCL| MLX RPI <-->|I2C SDA SCL| LCD IR -->|GPIO23| RPI RPI -->|GPIO18| BUZ RPI <-->|SPI| LORA RPI -->|GPIO25 RESET| LORA LORA -->|GPIO24 DIO0| RPI ``` ## Key Components ### BZ1 — [AI-1223-TWT-3V-2-R](https://www.flux.ai/adrian95/ai-1223-twt-3v-2-r~e34.md) - Package: Through Hole - Role Details: Buzzer driven by Raspberry Pi GPIO18 for track fault alarm - Manufacturer Name: PUI Audio, Inc. - Role: Alert - Datasheet URL: https://puiaudio.com/file/specs-AI-1223-TWT-3V-2-R.pdf - Manufacturer Part Number: AI-1223-TWT-3V-2-R - Part Type: Buzzer - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - - [pin N] - + [pin P] ### DS1 — [RC1602A](https://www.flux.ai/kicad-part-library/rc1602a~pwq.md) - Package or Case Code: RC1602A - Datasheet URL: http://www.raystar-optronics.com/down.php?ProID=18 - Role Details: 16x2 LCD module representing the user requested LCD display - Role: Display - Part Type: Display - Manufacturer Part Number: RC1602A **Pins:** - A/VEE [pin 15] - DB0 [pin 7] - DB1 [pin 8] - DB2 [pin 9] - DB3 [pin 10] - DB4 [pin 11] - DB5 [pin 12] - DB6 [pin 13] - DB7 [pin 14] - E [pin 6] - K [pin 16] - R/W [pin 5] - RS [pin 4] - VDD [pin 2] - VO [pin 3] - VSS [pin 1] ### J1 — [Pin Socket 02x20 for Rpi 5](https://www.flux.ai/project-x/pin-socket-02x20-for-rpi-5~r6.md) - License: https://creativecommons.org/licenses/by/4.0/ - Role: Controller Interface - Role Details: Raspberry Pi 4 40-pin GPIO header representation - Part Type: Connector **Pins:** - 3.3v [pin 1] - 3.3v [pin 17] - 5v [pin 2] - 5v [pin 4] - DNC [pin 27] - DNC [pin 28] - Gnd [pin 20] - Gnd [pin 39] - Gnd [pin 34] - Gnd [pin 30] - Gnd [pin 25] - Gnd [pin 9] - Gnd [pin 6] - Gnd [pin 14] - GPIO_05 [pin 29] - GPIO_06 [pin 31] - GPIO_07 [pin 26] - GPIO_08 [pin 24] - GPIO_09 [pin 21] - GPIO_10 [pin 19] - GPIO_11 [pin 23] - GPIO_12 [pin 32] - GPIO_13 [pin 33] - GPIO_14 [pin 8] - GPIO_15 [pin 10] - GPIO_16 [pin 36] - GPIO_17 [pin 11] - GPIO_18 [pin 12] - GPIO_19 [pin 35] - GPIO_2 [pin 3] - GPIO_20 [pin 38] - GPIO_21 [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_3 [pin 5] - GPIO_4 [pin 7] ### U1 — [MLX90614ESF-ACC-000-SP](https://www.flux.ai/jecstronic/mlx90614esf-acc-000-sp~si.md) - Role: Temperature Sensor - Role Details: MLX90614 I2C temperature sensor for rail temperature monitoring - Manufacturer Part Number: MLX90614ESF-ACC-000-SP - Manufacturer Name: Melexis Technologies NV - Package: TO-39 - Part Type: Sensor - Datasheet URL: https://media.melexis.com/-/media/files/documents/datasheets/MLX90614-datasheet-melexis.pdf - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - PWM_SDA [pin 2] - SCL_Vz [pin 1] - VDD [pin 3] - VSS [pin 4] ### U2 — [GP2Y0D805Z0F](https://www.flux.ai/adrian95/gp2y0d805z0f~h7p.md) - Role Details: Digital IR sensor connected to Raspberry Pi GPIO23 - Role: IR Sensor - Manufacturer Name: SHARP/Socle Technology - Part Type: Sensor - Datasheet URL: https://cdn.sharpsde.com/fileadmin/products/Optoelectronics/Sensors/Specs/GP2Y0D805Z0F_30Mar07_Spec_ED-06G024B.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: GP2Y0D805Z0F **Pins:** - ANODE [pin 14] - CATHODE [pin 1] - GND [pin 4] - LED [pin 3] - LED_FB [pin 2] - REG [pin 7] - VCC [pin 11] - VIN [pin 12] - VO [pin 13] ### U3 — [Ai-Thinker-Ra-01](https://www.flux.ai/vasyl/ai-thinker-ra-01~kj4.md) - Manufacturer Name: Semtech - Datasheet URL: https://docs.ai-thinker.com/_media/lora/docs/ra-01s_specification.pdf - Manufacturer Part Number: Ai-Thinker-Ra-01 - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: RF module - Role: LoRa Module - Role Details: SX1278 SPI LoRa transceiver module **Pins:** - 3.3V [pin 3] - ANT [pin 1] - DIO [pin 8] - DIO0 [pin 5] - DIO1 [pin 6] - DIO2 [pin 7] - DIO4 [pin 10] - DIO5 [pin 11] - GND [pin 2] - GND [pin 9] - GND [pin 16] - MISO [pin 13] - MOSI [pin 14] - NSS [pin 15] - RESET [pin 4] - SCK [pin 12] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/laxmanyd/schematic-diagram-of-railway-track-health-monitoring-system~4t](https://www.flux.ai/laxmanyd/schematic-diagram-of-railway-track-health-monitoring-system~4t).* --- *Generated from [https://www.flux.ai/laxmanyd/schematic-diagram-of-railway-track-health-monitoring-system~4t](https://www.flux.ai/laxmanyd/schematic-diagram-of-railway-track-health-monitoring-system~4t)*