Energy Meter Circuit Design
0:13
If you’re doing Option 1 (no mains anywhere on the PCB), then J8 should represent an off-board “load-side mains” connector (i.e., where the switched hot and neutral leave the relay module and go to the load), purely for documentation / wiring reference.
Concretely, in the schematic:
- J7 = MAINS input (from wall): MAINS_L, MAINS_N (off-board wiring only)
- J8 = LOAD output (to appliance): LOAD_L, LOAD_N (off-board wiring only)
And the key rule: J8 should not connect to any low-voltage nets (5 V / 3V3 / GND / ADC signals). It just anchors the net names LOAD_L and LOAD_N so it’s unambiguous how the external relay module and load wiring are intended to be hooked up.
If you want it even clearer, rename/annotate J8 in its value/description to something like “OFFBOARD_LOAD_OUT (wiring only)”.
55 days
I want J8 to be the load output: rename its nets to LOAD_L and LOAD_N (wiring only).
55 days
0:51
Considering.
Checking if I can make the changes for you.
Net Connections to be added
| Net | Connections |
|---|
Net Connections to be removed
| Net | Connections |
|---|
55 days
Updated 2 connections
0:13
Connected J8:Pin_1 to ^LOAD_L
Connected J8:Pin_2 to ^LOAD_N
55 days
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