A blank-sheet data-acquisition and telemetry PCB for Citrus Racing, taken from architecture through schematic capture, component selection, layout, and bring-up. An ESP32-S3 real-time core doubles as the wireless telemetry link, alongside a dedicated analog acquisition front-end, a multi-rail power tree, and a GNSS receive chain — all on one space-constrained board.
TODO — the ESP32-S3-master SPI bus shared by the IMU and ADC, the UART link to the GNSS receiver, and the CAN transceiver path bringing MoTeC M130 ECU data onto the S3. Written against real-time and signal-integrity needs.
TODO — SMA bulkhead to the NEO-M9N with bias-tee active-antenna power and hardware PPS time-stamping. Controlled-impedance targets of 50 Ω CPWG for the RF and 90 Ω differential for USB, hit by sizing trace geometry to the fabricator's fixed stackup.
TODO — LMR36015 400 kHz synchronous buck for the 3.3 V digital rail, TPS7A2030 low-noise LDO powering a separate analog island, P-channel MOSFET reverse-polarity and TVS input protection for reliable operation under vibration and electrical noise.