Dry Contact Inputs Design

I will place a 1x9 header named DRY_CONTACT_INPUTS and wire it via portals as requested.
  • Add Pin Header 01x09 2.54mm Vertical and set label to DRY_CONTACT_INPUTS.
  • Create portals IN1..IN8 (using Net Portal); use existing Ground net.
  • Connect pins: 1→GND; 2→IN1; 3→IN2; 4→IN3; 5→IN4; 6→IN5; 7→IN6; 8→IN7; 9→IN8.
Click Start on the plan bar to execute. Let me know if you want right-angle instead.
@library find a right-angle 1x9 2.54mm through-hole header footprint option for DRY_CONTACT_INPUTS.
Here’s a right-angle 1x9, 2.54 mm pitch, through-hole header suitable for DRY_CONTACT_INPUTS, plus close alternatives.
Exact match (recommended) | Right-angle 1x9 2.54 mm THT Headers | |---|---|---|---|---| | Pin Header 01x09 2.54mm Horizontal | 068b7f9d-2e3d-c0d2-55f3-ab9503839942 | — | — | Through Hole |
Close alternatives | Alternatives (verify pitch/pin count) | |---|---|---|---|---| | 440053-9 | e2ef8305-a410-47ed-850d-44450428905e | 440053-9 | — | Right-angle, 9-pos, 2.50 mm pitch (not 2.54 mm) | | 61301221021 | aee69d14-645a-46be-a330-c422ddc78b04 | 61301221021 | — | Right-angle, 12-pos, 2.54 mm pitch (can cut/use 9) | | 1821326 | bd9deb7b-8190-4b00-9e0e-31e5790d929a | 1821326 | — | Right-angle, terminal-count varies; 2.54 mm pitch listed |
Recommendation:
RS485_TX
GPIO15
GPIO14
GPIO21
GPIO34
GPIO25
GPIO22
GPIO16
GPIO5
GPIO13
GPIO17
GPIO12
GPIO35
GPIO33
RS485_RX
GPIO26
GPIO32
GPIO23
GPIO27
U2
+3V3


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ESP32 RS485 (Modbus) Controller Module bS88

ESP32 RS485 (Modbus) Controller Module bS88 thumbnail
This project is a controller module that uses the ESP32-WROOM-32E and the MAX3485 to communicate with Modbus devices. It has a USB-C port for power and data, a voltage regulator for stable operation. It also has a CH340C chip for USB to serial conversion. #referenceDesign #project #ESP32 #ESP32WROOM #RF #WIFI #MCU #reusable #module #simple-embedded #espressif #template #MAX3485 #RS485 #maximintegrated

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