Fabrication Readiness


Verification is only partially complete:
J12 exact pinout
  1. 5 V
  2. GND
  3. I²C SCL
  4. I²C SDA
  5. ESP32 TX — GPIO9, connect to display RX
  6. ESP32 RX — GPIO10, connect to display TX
  7. 3.3 V
  8. HMI enable/spare — GPIO14
Power
The 5 V source is the DFRobot DFR0379 LM2596 buck module, but the project does not identify the 7-inch display or its maximum current. Therefore, available current margin cannot yet be confirmed safely.
Connector and clearance
J12 is a vertical Samtec SSW-108-02-G-S 2.54 mm female socket, not a locking cable connector. It is approximately 21.35 × 3.55 mm and located inside the board rather than at an edge. The vertical mating direction is clear, but exact cable/plug clearance cannot be validated without the mating connector housing and cable exit direction.
Please provide the 7-inch display model/MPN or product link and the intended mating cable/connector. Those two items are required for an exact current and mechanical-clearance verdict.
myy pcb size
Your PCB size is 160 mm × 185 mm.
  • Area: 29,600 mm²
  • Approximate imperial size: 6.30 × 7.28 inches
  • Stackup: 4 layers
  • Board thickness: approximately 1.30 mm
Check exact J12 pinout
Size 5V rail margin
Check connector clearance
Cross-check display power

Waiting for input


Schematic of ESP32 Safety Sensor Hub
U4
R8
Resistance
10kΩ
R5
Resistance
4.7kΩ
R4
Resistance
4.7kΩ
R7
Resistance
20kΩ
R6
Resistance
10kΩ
J2
K2
K1
J1
BZ1
J3
U6
U2

ESP32 Safety Sensor Hub

ESP32 Safety Sensor Hub thumbnail