Temperature and Humidity Sensor Node Design


I’m blocked from making project changes because this account currently has no available ACUs, so AI execution features are unavailable.
Nothing has been modified yet: the project is still empty with 0 components and 0 nets. Remaining work is to create the USB-C powered Wi‑Fi/BLE temperature/humidity sensor schematic, select the MCU/module and digital T/RH sensor, design the protected 5 V input and 3.3 V power rail, add documentation for consumer/regulatory considerations, then verify ERC and prepare layout constraints.
make a relay pcb using the omron g2rl 5v controlled by a MMBT2222A transistor
I’ll create a 5 V Omron G2RL relay driver board using an MMBT2222A low-side transistor, add the required coil flyback protection and connectors, then run a schematic check.
I found a 5 V Omron G2RL variant in the library plus the requested MMBT2222A; I’m adding a 5 V/control input, relay contact terminal, base resistor, base pulldown, and flyback diode now.
Processing was stopped.
Here's a summary of what I was working on:
Inspecting pin details
I'm thinking I need to infer the G2RL-1A pin connections. There are coil pins—maybe 1 and 8? And for the contacts, it seems like 3 could be COM, while maybe 4 is NO, but I’m uncertain about pin 6. I want to check the pin descriptions to be sure about all of this, so I’ll take a closer look. It’s important to get these details right to avoid any mistakes!
3.3V input drive
Add screw terminals
Add driver protection
Set board size
@copilot Ho bisogno di pilotare questo relè omron g2rl 5v. Aggiungi un transistor NPN BC817, una resistenza da 1kΩ per la base e un diodo di flyback (come l'1N4148) per proteggere il circuito dai picchi di tensione

3D view of the PCB of 5V Omron G2RL Relay Driver

5V Omron G2RL Relay Driver

5V Omron G2RL Relay Driver thumbnail