I can’t start modifying the project right now because your account has no available ACUs, so AI execution tools are unavailable.
Current project state:
- Project is still empty: 0 components, 0 nets.
- No schematic, PCB layout, power tree, or documentation has been created yet.
- Your requested design is clear: a USB-C powered low-power temperature/humidity sensor node with Wi-Fi + BLE 5.x, USB-C 5 V input, and input protection including reverse/OVP/UVLO/OCP for 0.5–3 A sources.
What remains to be done once ACUs are available:
- Select the wireless MCU/module, likely an ESP32-C3/S3/C6-class module depending on power, BLE version, and certification needs.
- Select a digital temperature/RH sensor such as Sensirion SHT4x/SHTC3-class I²C sensor.
- Design USB-C 5 V default input with CC pull-downs and protection.
- Add power protection: fuse/current limiting, reverse protection, surge/ESD, OVP, UVLO, and 3.3 V regulation.
- Create the schematic, project specification, power budget, firmware pin map, bring-up plan, and consumer regulatory notes.
- Then place/rout the PCB with RF antenna keepout and sensor thermal/isolation considerations.
When ACUs are available, I can proceed with the schematic and documentation first.