# ARVIPO PS37 Controller Reverse Engineering ## Description Análisis de ingeniería inversa del controlador de tijera ARVIPO PS37 fabricado por Koham, basado en fotografías de ambas caras de la PCB. ## Project Details - **Owner:** esrodrigo - **Created:** 7/17/2026 - **Last Updated:** 7/17/2026 - **Visibility:** Public ## Key Components ### BZ1 — [TMB12A05](https://www.flux.ai/jecstronic/tmb12a05~ddj.md) - Manufacturer Part Number: TMB12A05 - Manufacturer Name: Jiangsu Huaneng Elec - Datasheet URL: https://datasheet.lcsc.com/lcsc/2304261046_Jiangsu-Huaneng-Elec-TMB12A05_C96093.pdf - Role Details: Zumbador/buzzer observado; confirmar driver y pin MCU. - Role: Audible Alert - Functional Group: Indicacion acustica - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Buzzer **Pins:** - N - P ### J1 — [Connector 01x08 0.100](https://www.flux.ai/vasy_skral/connector-01x08-0100~q3l.md) - Role Details: Según datos del usuario: zona D = entrada de batería Li-ion 21–25 V; zona A = salida hacia motor trifásico de la tijera. En el esquema actual J1 es un placeholder de conector principal: confirmar por continuidad qué pines son VBAT+, GND y fases U/V/W. - Role: Conector principal / potencia - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Functional Group: Entrada y conectores - Power Requirements: 21–25 V Li-ion input; corriente de motor pendiente de medir - Connector Type: Power and motor harness placeholder **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] - Pin_7 [pin 7] - Pin_8 [pin 8] ### J2 — [Connector 02x03](https://www.flux.ai/adrian95/connector-02x03~9qh.md) - Functional Group: Motor Hall sensors - Role: Sensor Interface - Manufacturer Part Number: Conn_02x03_Counter_Clockwise - Connector Positions: 3 - Connector Type: Headers and Wire Housings - Role Details: Conector superior: 霍尔 / Hall, 3 pines físicos. Nueva evidencia: placa hija Hall conectada por arnés rojo/amarillo/negro; medir VCC, GND y señal Hall/tacómetro. La placa hija también muestra un cable negro separado que debe medirse como posible señal adicional/protección/sensor externo, aunque no pertenezca al conector Hall de 3 pines. **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] ### J3 — [Connector 02x03](https://www.flux.ai/adrian95/connector-02x03~9qh.md) - Role Details: Conector inferior: 显示屏 / Display, 3 pines físicos. Hipótesis de medición: VCC, GND y una línea de datos, o interfaz propietaria; confirmar si es UART/I2C de un hilo/otro protocolo. - Connector Positions: 3 - Functional Group: Display / OLED - Manufacturer Part Number: Conn_02x03_Counter_Clockwise - Connector Type: Headers and Wire Housings - Role: Display Interface **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] ### Q1 — [GL8N04-8](https://www.flux.ai/lcsc/gl8n04-8~62r.md) - Part Type: MOSFETs - Functional Group: Etapa de potencia - LCSC Part Number: C2886404 - Package or Case Code: SOP-8_L4.9-W3.9-P1.27-LS6.0-BL - Role: MOSFET Placeholder - JLCPCB Part Class: Extended Part - Role Details: MOSFET SO-8 de etapa de potencia. Topologia final por continuidad: puente H, medias ramas o low-side. - Manufacturer Name: GL(光磊) - Manufacturer Part Number: GL8N04-8 **Pins:** - D [pin 7] - D [pin 5] - D [pin 8] - D [pin 6] - G [pin 4] - S [pin 3] - S [pin 1] - S [pin 2] ### Q2 — [GL8N04-8](https://www.flux.ai/lcsc/gl8n04-8~62r.md) - Package or Case Code: SOP-8_L4.9-W3.9-P1.27-LS6.0-BL - Part Type: MOSFETs - LCSC Part Number: C2886404 - Functional Group: Etapa de potencia - JLCPCB Part Class: Extended Part - Role Details: MOSFET SO-8 de etapa de potencia. Topologia final por continuidad: puente H, medias ramas o low-side. - Manufacturer Name: GL(光磊) - Role: MOSFET Placeholder - Manufacturer Part Number: GL8N04-8 **Pins:** - D [pin 7] - D [pin 5] - D [pin 8] - D [pin 6] - G [pin 4] - S [pin 3] - S [pin 1] - S [pin 2] ### Q3 — [GL8N04-8](https://www.flux.ai/lcsc/gl8n04-8~62r.md) - Manufacturer Name: GL(光磊) - Functional Group: Etapa de potencia - Role: MOSFET Placeholder - Manufacturer Part Number: GL8N04-8 - Package or Case Code: SOP-8_L4.9-W3.9-P1.27-LS6.0-BL - Part Type: MOSFETs - LCSC Part Number: C2886404 - JLCPCB Part Class: Extended Part - Role Details: MOSFET SO-8 de etapa de potencia. Topologia final por continuidad: puente H, medias ramas o low-side. **Pins:** - D [pin 7] - D [pin 5] - D [pin 8] - D [pin 6] - G [pin 4] - S [pin 3] - S [pin 1] - S [pin 2] ### Q4 — [GL8N04-8](https://www.flux.ai/lcsc/gl8n04-8~62r.md) - JLCPCB Part Class: Extended Part - LCSC Part Number: C2886404 - Part Type: MOSFETs - Package or Case Code: SOP-8_L4.9-W3.9-P1.27-LS6.0-BL - Role Details: MOSFET SO-8 de etapa de potencia. Topologia final por continuidad: puente H, medias ramas o low-side. - Role: MOSFET Placeholder - Manufacturer Part Number: GL8N04-8 - Functional Group: Etapa de potencia - Manufacturer Name: GL(光磊) **Pins:** - D [pin 7] - D [pin 5] - D [pin 8] - D [pin 6] - G [pin 4] - S [pin 3] - S [pin 1] - S [pin 2] ### Q5 — [GL8N04-8](https://www.flux.ai/lcsc/gl8n04-8~62r.md) - Functional Group: Etapa de potencia - Manufacturer Part Number: GL8N04-8 - Manufacturer Name: GL(光磊) - JLCPCB Part Class: Extended Part - Package or Case Code: SOP-8_L4.9-W3.9-P1.27-LS6.0-BL - Role Details: MOSFET SO-8 de etapa de potencia. Topologia final por continuidad: puente H, medias ramas o low-side. - LCSC Part Number: C2886404 - Role: MOSFET Placeholder - Part Type: MOSFETs **Pins:** - D [pin 7] - D [pin 5] - D [pin 8] - D [pin 6] - G [pin 4] - S [pin 3] - S [pin 1] - S [pin 2] ### Q6 — [GL8N04-8](https://www.flux.ai/lcsc/gl8n04-8~62r.md) - Functional Group: Etapa de potencia - Manufacturer Part Number: GL8N04-8 - Role: MOSFET Placeholder - Manufacturer Name: GL(光磊) - Role Details: MOSFET SO-8 de etapa de potencia. Topologia final por continuidad: puente H, medias ramas o low-side. - JLCPCB Part Class: Extended Part - LCSC Part Number: C2886404 - Part Type: MOSFETs - Package or Case Code: SOP-8_L4.9-W3.9-P1.27-LS6.0-BL **Pins:** - D [pin 7] - D [pin 5] - D [pin 8] - D [pin 6] - G [pin 4] - S [pin 3] - S [pin 1] - S [pin 2] ### RSH1 — [Generic Resistor](https://www.flux.ai/jharwinbarrozo/generic-resistor~3e.md) - Functional Group: Medicion de corriente - Part Type: Resistor - Role: Current Shunt Placeholder - Role Details: Shunt R002 observado. Confirmar ubicacion low-side/high-side y ruta a MCU/ADC. - Package: SMD_0603_1608Metric - Resistance: 0.002ohms **Pins:** - P1 [pin 1] - P2 [pin 2] ### U1 — [STM32F103C8T6](https://www.flux.ai/jharwinbarrozo/stm32f103c8t6~qe2.md) - Role: Logic - Manufacturer Name: STMicroelectronics - Datasheet URL: https://datasheet.lcsc.com/lcsc/1811151642_STMicroelectronics-STM32F103C8T6_C8734.pdf - Part Type: Microcontroller - Role Details: MCU principal STM32F103C8T6. Debe mapearse: control de MOSFETs, OLED, protección anticorte, switch on/off, buzzer, UART/SWD. - Manufacturer Part Number: STM32F103C8T6 - Functional Group: Control logico **Pins:** - BOOT0 [pin 44] - NRST [pin 7] - PA0_WKUP [pin 10] - PA1 [pin 11] - PA10 [pin 31] - PA11 [pin 32] - PA12 [pin 33] - PA13 [pin 34] - PA14 [pin 37] - PA15 [pin 38] - PA2 [pin 12] - PA3 [pin 13] - PA4 [pin 14] - PA5 [pin 15] - PA6 [pin 16] - PA7 [pin 17] - PA8 [pin 29] - PA9 [pin 30] - PB0 [pin 18] - PB1 [pin 19] - PB10 [pin 21] - PB11 [pin 22] - PB12 [pin 25] - PB13 [pin 26] - PB14 [pin 27] - PB15 [pin 28] - PB2 [pin 20] - PB3 [pin 39] - PB4 [pin 40] - PB5 [pin 41] - PB6 [pin 42] - PB7 [pin 43] - PB8 [pin 45] - PB9 [pin 46] - PC13_TAMPER_RTC [pin 2] - PC14_OSC32_IN [pin 3] - PC15_OSC32_OUT [pin 4] - PD0_OSC_IN [pin 5] - PD1_OSC_OUT [pin 6] - VBAT [pin 1] - VDD [pin 24] - VDD [pin 48] - VDD [pin 36] - VDDA [pin 9] - VSS [pin 23] - VSS [pin 47] - VSS [pin 35] - VSSA [pin 8] ### U2 — [MP1584](https://www.flux.ai/monolithicpower/mp1584~bk.md) - Manufacturer Part Number: MP1584 - Functional Group: Alimentacion auxiliar - Role: Power Regulator Placeholder - Manufacturer Name: Monolithic Power Systems - Datasheet URL: https://www.monolithicpower.com/en/documentview/productdocument/index/version/2/document_type/Datasheet/lang/en/sku/MP1584EN-LF-Z - Product Image Url: https://www.monolithicpower.com/pub/media/catalog/product/M/P/MP1584_109_1_3.jpg - Package or Case Code: SOIC8E_MPS - Role Details: Regulador buck auxiliar desde batería 21–25 V hacia rail lógico; medir VIN respecto a GND y salida real (+5 V probable). - Product Info Url: https://www.monolithicpower.com/en/catalog/product/view/id/109?utm_source=ultralibrarian&utm_medium=component_search&utm_campaign=listing **Pins:** - BST [pin 8] - COMP [pin 3] - EN [pin 2] - FB [pin 4] - FREQ [pin 6] - GND [pin EPAD] - GND [pin 5] - SW [pin 1] - VIN [pin 7] ### U3 — [ams1117-3.3 sot-89](https://www.flux.ai/adrian95/ams1117-3p3-sot-89~jwn.md) - Role Details: Posible rail 3V3/logic desde 5V; confirmar si existe en placa real. - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2409141623_UMW-Youtai-Semiconductor-Co---Ltd--AMS1117-3-3_C347256.pdf - Part Type: Linear Voltage Regulators (LDO) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Shenzhen Slkormicro Semicon Co., Ltd. - Role: Logic Regulator Placeholder - Functional Group: Alimentacion auxiliar - Package or Case Code: SOT-89_L4.5-W2.5-P1.50-LS4.2-BR - Manufacturer Part Number: AMS1117-3.3 SOT-89 **Pins:** - ADJ(GND) [pin 1] - VIN [pin 3] - VOUT(TAB) [pin 2] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/esrodrigo/arvipo-ps37-controller-reverse-engineering~1i](https://www.flux.ai/esrodrigo/arvipo-ps37-controller-reverse-engineering~1i).* --- *Generated from [https://www.flux.ai/esrodrigo/arvipo-ps37-controller-reverse-engineering~1i](https://www.flux.ai/esrodrigo/arvipo-ps37-controller-reverse-engineering~1i)*