# Seguidor lineaV1 ## Description Welcome to your new project. Imagine what you can build here. ## Project Details - **Owner:** maxipailla - **Created:** 3/27/2026 - **Last Updated:** 4/8/2026 - **Visibility:** Public ## Key Components ### M1 — [DC Motor N20](https://www.flux.ai/ricetaco2/dc-motor-n20~qy.md) - Role Details: 6V 500RPM DC gearmotor for robot traction - Package: N20 Gearmotor - Role: Drive Motor - Implementation Details: Motor positive connected to VBAT, negative switched by Q1 low-side transistor. **Pins:** - - [pin 2] - + [pin 1] ### M2 — [DC Motor N20](https://www.flux.ai/ricetaco2/dc-motor-n20~qy.md) - Package: N20 Gearmotor - Role Details: 6V 500RPM DC gearmotor for robot traction - Implementation Details: Motor positive connected to VBAT, negative switched by Q2 low-side transistor. - Role: Drive Motor **Pins:** - - [pin 2] - + [pin 1] ### Q1 — [TIP120G](https://www.flux.ai/adrian95/tip120g~l66.md) - License: https://creativecommons.org/licenses/by/4.0/ - Implementation Details: Low-side switch for M1. Collector to motor negative, emitter to common ground, base driven from ESP32 D25 through R1. - Role Details: Low-side Darlington transistor switching each N20 motor - Manufacturer Part Number: TIP120G - Role: Motor Switch - Package: TO-220 - Datasheet URL: https://www.onsemi.com/pdf/datasheet/tip120-d.pdf - Manufacturer Name: onsemi - Part Type: Transistor **Pins:** - B [pin 1] - C [pin 2] - E [pin 3] ### Q2 — [TIP120G](https://www.flux.ai/adrian95/tip120g~l66.md) - Part Type: Transistor - Datasheet URL: https://www.onsemi.com/pdf/datasheet/tip120-d.pdf - Manufacturer Name: onsemi - Package: TO-220 - Role: Motor Switch - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: TIP120G - Role Details: Low-side Darlington transistor switching each N20 motor - Implementation Details: Low-side switch for M2. Collector to motor negative, emitter to common ground, base driven from ESP32 D26 through R2. **Pins:** - B [pin 1] - C [pin 2] - E [pin 3] ### U1 — [ESP32-DEVKIT-V1](https://www.flux.ai/jharwinbarrozo/esp32-devkit-v1~7xd.md) - Symbol Style: Parametric - Role: Main Controller - Role Details: ESP32 DevKit V1 for line sensor processing and motor control - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32_datasheet_en.pdf - Manufacturer Part Number: ESP32-DEVKIT-V1 - Implementation Details: Powered from 5V on VIN; battery 7.4V isolated from logic rail; GPIO D25 and D26 drive TIP120 motor switches; VP,VN,D34,D35,D32,D33,D27,D14 read the 8 sensor channels. - Manufacturer Name: Espressif Systems - Part Type: Integrated Circuit - Package: DevKit **Pins:** - 3V3 [pin 1] - D12 [pin 27] - D13 [pin 28] - D14 [pin 26] - D15 [pin 3] - D18 [pin 9] - D19 [pin 10] - D2 [pin 4] - D21 [pin 11] - D22 [pin 14] - D23 [pin 15] - D25 [pin 23] - D26 [pin 24] - D27 [pin 25] - D32 [pin 21] - D33 [pin 22] - D34 [pin 19] - D35 [pin 20] - D4 [pin 5] - D5 [pin 8] - EN [pin 16] - GND [pin 2] - GND_1 [pin 29] - RX0 [pin 12] - RX2 [pin 6] - TX0 [pin 13] - TX2 [pin 7] - VIN [pin 30] - VN [pin 18] - VP [pin 17] ### U10 — [QTR-1A](https://www.flux.ai/jecstronic/qtr-1a~3ub.md) - Part Type: Module - Datasheet URL: https://www.pololu.com/product-info-merged/2458 - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Pololu Corporation - Implementation Details: Fallback sensor channel 6 replacing one lane of QTR-8A; output to ESP32 D33. - Manufacturer Part Number: 2458 - Role: Line Sensor - Package: Module - Role Details: One channel of fallback reflectance sensor array replacing unavailable QTR-8A module **Pins:** - GND [pin 3] - OUT [pin 2] - VIN [pin 1] ### U11 — [QTR-1A](https://www.flux.ai/jecstronic/qtr-1a~3ub.md) - Manufacturer Name: Pololu Corporation - Role: Line Sensor - Manufacturer Part Number: 2458 - Implementation Details: Fallback sensor channel 7 replacing one lane of QTR-8A; output to ESP32 D27. - Role Details: One channel of fallback reflectance sensor array replacing unavailable QTR-8A module - Part Type: Module - Datasheet URL: https://www.pololu.com/product-info-merged/2458 - License: https://creativecommons.org/licenses/by/4.0/ - Package: Module **Pins:** - GND [pin 3] - OUT [pin 2] - VIN [pin 1] ### U12 — [QTR-1A](https://www.flux.ai/jecstronic/qtr-1a~3ub.md) - Part Type: Module - Datasheet URL: https://www.pololu.com/product-info-merged/2458 - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: One channel of fallback reflectance sensor array replacing unavailable QTR-8A module - Manufacturer Name: Pololu Corporation - Manufacturer Part Number: 2458 - Role: Line Sensor - Implementation Details: Fallback sensor channel 8 replacing one lane of QTR-8A; output to ESP32 D14. - Package: Module **Pins:** - GND [pin 3] - OUT [pin 2] - VIN [pin 1] ### U2 — [1200 mAh Lipo Battery](https://www.flux.ai/middleagedmutantninjacoder/1200-mah-lipo-battery~ke.md) - Package: Pouch Cell - Role Details: Single-cell 3.7V LiPo used as part of 2S battery pack - Implementation Details: Upper LiPo cell in 2S series pack. Positive terminal feeds VBAT rail. - Role: Battery Cell **Pins:** - - [pin 2] - + [pin 1] ### U3 — [1200 mAh Lipo Battery](https://www.flux.ai/middleagedmutantninjacoder/1200-mah-lipo-battery~ke.md) - Implementation Details: Lower LiPo cell in 2S series pack. Negative terminal is system ground. - Package: Pouch Cell - Role: Battery Cell - Role Details: Single-cell 3.7V LiPo used as part of 2S battery pack **Pins:** - - [pin 2] - + [pin 1] ### U4 — [TSR_1-2450](https://www.flux.ai/kicad-part-library/tsr1-2450~hs.md) - Manufacturer Part Number: TSR_1-2450 - Package: Module - Datasheet URL: http://www.tracopower.com/products/tsr1.pdf - Manufacturer Name: Texas Instruments Inc. - Implementation Details: 5V step-down module from VBAT to 5V rail for ESP32 VIN and sensor supply. - Package or Case Code: Converter_DCDC_TRACO_TSR-1_THT - Role: Buck Regulator - Part Type: Converter DCDC - Role Details: 7.4V battery to regulated 5V for ESP32 and sensor **Pins:** - GND [pin 2] - Vin [pin 1] - Vout [pin 3] ### U5 — [QTR-1A](https://www.flux.ai/jecstronic/qtr-1a~3ub.md) - Package: Module - Role: Line Sensor - Implementation Details: Fallback sensor channel 1 replacing one lane of QTR-8A; output to ESP32 VP. - Role Details: One channel of fallback reflectance sensor array replacing unavailable QTR-8A module - Datasheet URL: https://www.pololu.com/product-info-merged/2458 - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Module - Manufacturer Part Number: 2458 - Manufacturer Name: Pololu Corporation **Pins:** - GND [pin 3] - OUT [pin 2] - VIN [pin 1] ### U6 — [QTR-1A](https://www.flux.ai/jecstronic/qtr-1a~3ub.md) - Manufacturer Part Number: 2458 - Manufacturer Name: Pololu Corporation - Role Details: One channel of fallback reflectance sensor array replacing unavailable QTR-8A module - Part Type: Module - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.pololu.com/product-info-merged/2458 - Implementation Details: Fallback sensor channel 2 replacing one lane of QTR-8A; output to ESP32 VN. - Role: Line Sensor - Package: Module **Pins:** - GND [pin 3] - OUT [pin 2] - VIN [pin 1] ### U7 — [QTR-1A](https://www.flux.ai/jecstronic/qtr-1a~3ub.md) - Role Details: One channel of fallback reflectance sensor array replacing unavailable QTR-8A module - Package: Module - Role: Line Sensor - Implementation Details: Fallback sensor channel 3 replacing one lane of QTR-8A; output to ESP32 D34. - Manufacturer Part Number: 2458 - Manufacturer Name: Pololu Corporation - Datasheet URL: https://www.pololu.com/product-info-merged/2458 - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Module **Pins:** - GND [pin 3] - OUT [pin 2] - VIN [pin 1] ### U8 — [QTR-1A](https://www.flux.ai/jecstronic/qtr-1a~3ub.md) - Manufacturer Name: Pololu Corporation - Manufacturer Part Number: 2458 - Role Details: One channel of fallback reflectance sensor array replacing unavailable QTR-8A module - Part Type: Module - Implementation Details: Fallback sensor channel 4 replacing one lane of QTR-8A; output to ESP32 D35. - Datasheet URL: https://www.pololu.com/product-info-merged/2458 - License: https://creativecommons.org/licenses/by/4.0/ - Role: Line Sensor - Package: Module **Pins:** - GND [pin 3] - OUT [pin 2] - VIN [pin 1] ### U9 — [QTR-1A](https://www.flux.ai/jecstronic/qtr-1a~3ub.md) - Role Details: One channel of fallback reflectance sensor array replacing unavailable QTR-8A module - Manufacturer Name: Pololu Corporation - Package: Module - Manufacturer Part Number: 2458 - Implementation Details: Fallback sensor channel 5 replacing one lane of QTR-8A; output to ESP32 D32. - Role: Line Sensor - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.pololu.com/product-info-merged/2458 - Part Type: Module **Pins:** - GND [pin 3] - OUT [pin 2] - VIN [pin 1] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/maxipailla/seguidor-lineav1~99](https://www.flux.ai/maxipailla/seguidor-lineav1~99).* --- *Generated from [https://www.flux.ai/maxipailla/seguidor-lineav1~99](https://www.flux.ai/maxipailla/seguidor-lineav1~99)*