

04 ttsumo
Sensor Infravermelho de Oponente 38 kHz (TTSumo) para Robótica Mini-Sumo e ESP32 projetado no KiCad 10
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 19
- Nets
- 12
- Pads
- 47
- Tracks, vias
- 0, 0
- Routed
- Not yet
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 18 Oct 2026
- Updated
- 18 Oct 2026
Overview
04 ttsumo is an open-source printed circuit board by briel0, from the briel0/ttsumo-sensor-ir repository on GitHub. It is a 2-layer board with 19 parts on 12 nets.
It is built around the NE555D, TSSP58P38 and MBR140W. Its parts include 9 resistors, 4 capacitors, 3 diodes, 2 ICs and 1 connector. It belongs with the sensors and measurement boards of this library.
Main components
3NE555D
SOIC-80℃~+70℃ 10mA 4.5V~16V SOIC-8 555 Timers / Counters ROHSTexas InstrumentsTimers / CountersTSSP58P38
插件-25℃~+85℃ 2.5V~5.5V 38kHz 40m 700uA 插件 Infrared Remote Receiver (IRM) ROHSVishay IntertechnologyInfrared Remote Receiver (IRM)MBR140W
SOD-1231 Independent 1A 30uA@40V 40V 5.5A 540mV@1A SOD-123 Schottky Diodes ROHSCBISchottky Diodes
README
README.mdTTSumo — Sensor Infravermelho de Oponente 38 kHz (KiCad 10)
Módulo sensor óptico de oponente ultracompacto para robôs Mini-Sumo (inspirado no JSumo JS40F), projetado no KiCad 10 com saída nativa em $3{,}3\text{V}$ (compatível com ESP32) e pino ENABLE dedicado para controle individual do emissor infravermelho.
Especificações e Arquitetura
- Emissor IR ($38{,}9\text{ kHz}$): Oscilador astável com
NE555D(SOIC-8, compatível pino a pino comTLC555CDCMOS), $R_1 = 1\text{ k}\Omega$, $R_2 = 18\text{ k}\Omega$, $C_1 = 1\text{ nF}$ (duty cycle simétrico de $\sim 51{,}3%$), acionando LED IR de $940\text{ nm}$ ($5\text{ mm}$) com pulsos de $\sim 31\text{ mA}$ ($R_3 = 68\ \Omega$). - Receptor Óptico (
TSSP4038/TSSP58P38): Receptor IR de ganho fixo para feixe contínuo de $38\text{ kHz}$, isolado da linha de alimentação por filtro passa-baixas RC ($R_4 = 100\ \Omega$, $C_2 = 4{,}7\text{ }\mu\text{F}$, $f_c \approx 338\text{ Hz}$). - Saída Digital
OUTSegura para ESP32 ($3{,}3\text{V}$): Ativa emLOW($0\text{V} = \text{oponente detectado}$, $\sim 3{,}3\text{V} = \text{livre}$) através de divisor resistivo integrado ($R_5 = 10\text{ k}\Omega$, $R_8 = 15\text{ k}\Omega$) e LED indicador verde SMD 0603 ($R_6 = 4{,}7\text{ k}\Omega$). - Controle de
ENABLE($3{,}0\text{V}$): Permite desligar o emissor IR via microcontrolador (nívelLOWno pino 4) para evitar crosstalk entre sensores ou realizar leitura passiva, mantendo-se ligado por padrão via divisor $R_7 = 10\text{ k}\Omega$ / $R_9 = 15\text{ k}\Omega$. - Proteção de Entrada: Diodo Schottky
MBR140W(SOD-123) em série na linha+5Vcontra inversão de polaridade.
Arquivos do Projeto
04_ttsumo.kicad_pro/04_ttsumo.kicad_sch: Projeto e Esquemático no KiCad 10.04_ttsumo.kicad_pcb: Layout da PCB (em desenvolvimento).preview.pdf: Esquemático exportado em PDF.AGENTS.md: Documentação detalhada das decisões de engenharia e pendências de integração com a placa principal V4.
Parts
19| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R5, R7 |
| 2 | 15k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R8, R9 |
| 1 | 100 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4 |
| 1 | 100nF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C3 |
| 1 | 10nF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C4 |
| 1 | 18k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2 |
| 1 | 1k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1 |
| 1 | 1nF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1 |
| 1 | 4.7k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R6 |
| 1 | 4.7uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2 |
| 1 | 68 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3 |
| 1 | Conector_4P | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J1 |
| 1 | IR 940nm | LED_THT:LED_D5.0mm | D1 |
| 1 | LED Verde | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D2 |
| 1 | MBR140W | Diode_SMD:D_SOD-123 | D3 |
| 1 | NE555D | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | TSSP58P38 | OptoDevice:Vishay_MINICAST-3Pin | U2 |
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Questions
What parts does the 04 ttsumo use?
19 parts, built around the NE555D, TSSP58P38 and MBR140W. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the 04 ttsumo KiCad files?
From the briel0/ttsumo-sensor-ir repository on GitHub, at the commit this page was made from: the board is 04_ttsumo.kicad_pcb and its schematic 04_ttsumo.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the 04 ttsumo design in my own project?
Its repository states no licence, so its author keeps all rights: ask briel0 before reusing the design.