# 8xEGT to CAN ## Description 8 Channel EGT to CanBus board ## Project Details - **Owner:** ov686818 - **Created:** 3/13/2026 - **Last Updated:** 3/13/2026 - **Visibility:** Public - **Reliability Target (MTBF):** Motorsports instrumentation - **Operating Voltage:** 9-18V - **Operating Temperature:** -20C to 85C - **System Architecture:** flowchart TD VIN["9-18V Automotive Input"] --> PROT["Input Protection Reverse polarity + ISO7637 clamp"] PROT --> BUCK5["Buck 5V"] BUCK5 --> LDO33["LDO 3.3V"] LDO33 --> MCU["MCU with CAN 2.0B"] PROT --> AUX12["Protected 12V rail (optional)"] TC1["K-type TC CH1"] --> AFE["8-ch Thermocouple AFE CJC + open/short detect"] TC2["K-type TC CH2"] --> AFE TC3["K-type TC CH3"] --> AFE TC4["K-type TC CH4"] --> AFE TC5["K-type TC CH5"] --> AFE TC6["K-type TC CH6"] --> AFE TC7["K-type TC CH7"] --> AFE TC8["K-type TC CH8"] --> AFE AFE -->|"SPI"| MCU MCU --> CANPHY["CAN Transceiver"] CANPHY --> CANBUS["CANH/CANL"] MCU --> WD["Independent Watchdog"] ESD["ESD Protection"] --- CANBUS ESD --- TC1 ESD --- TC8 subgraph GND_STRAT [Ground Strategy] AGND["Analog Ground"] DGND["Digital Ground"] AGND --- DGND end AFE --- AGND MCU --- DGND CANPHY --- DGND - **Power Requirements:** 9-18V input with reverse polarity + ISO 7637-2 transient protection; 5V + 3.3V rails - **Compliance:** Automotive transient robustness (ISO 7637-2 design target) - **Connectivity:** CAN 2.0B 500kbps (11-bit IDs) *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/ov686818/8xegt-to-can~fl](https://www.flux.ai/ov686818/8xegt-to-can~fl).* --- *Generated from [https://www.flux.ai/ov686818/8xegt-to-can~fl](https://www.flux.ai/ov686818/8xegt-to-can~fl)*