# Vivek Vijayan - Hi guys.. I've one observation...

Channel: #support
Source: https://discord.com/channels/1233487248129921135/1526257995648864417
Started: 2026-07-13T16:04:23.255000+00:00
Last activity: 2026-07-20T07:50:23.496000+00:00

## Vivek Vijayan — 2026-07-13T16:04:22.665000+00:00

Hi guys.. 
I've one observation. 

This is my high level code.
```
export const power_circuit = () => {
  return (
    <board name="main-power-circuit" routingDisabled={true}>
        <BmsMonitorModule name="monitor_module" schX={0}/>
        <CurrentSensing name="current_sensing" schX={5}/>
        
        <HighVoltagePowerSupply name="hv_supply" schY={5}/>
        <CommunicationBridge name="com_bridge" schX={5} schY={5}/>
        
        <trace name="tr_cvdd" from="monitor_module.CVDD" to="hv_supply.LV_OUT"/>

        </board>
  );
};
```
If the modules are defined inside <subcircuit>, then the <trace> will not connect. If modules are defined inside <group>, <trace> is connects the ports without any issues. Attached images show both conditions


**Case 1: module as <group>**
```
export const BmsMonitorModule = ({ name, schX, schY }: BmsMonitorModuleProps) => {
  return (
    <group name={name} schX={schX} schY={schY} showAsSchematicBox>
      ...
    </group>
)
}
```
**Case 2: module as <subcircuit>**
```
export const BmsMonitorModule = ({ name, schX, schY }: BmsMonitorModuleProps) => {
  return (
    <subcircuit name={name} schX={schX} schY={schY} showAsSchematicBox>
      ...
    </subcircuit>
)
}
```
Attachment: image.png — https://community.tscircuit.com/media/1526257995078701218
Attachment: image.png — https://community.tscircuit.com/media/1526257995489607782

## Seve — 2026-07-13T16:44:26.890000+00:00

hey yes, use exposedNets

## Seve — 2026-07-13T16:44:34.005000+00:00

that will expose nets outside the subcircuit

## Seve — 2026-07-13T16:44:49.396000+00:00

subcircuits are isolated by default- this is actually useful in a lot of contexts but can be confusing

## Vivek Vijayan — 2026-07-15T12:35:10.847000+00:00

Is it possible to expose only selected nets? May be the nets from <port> component only?

## Seve — 2026-07-15T15:28:46.162000+00:00

can you should me an example of the behavior you're looking for w/ some tsx? Just want to make sure i understand

## Vivek Vijayan — 2026-07-20T07:50:23.496000+00:00

Hi <@757706909351411845> , Is this the right approach to use `exposedNets`
```low-voltage-power-supply.tsx
export const LowVoltagePowerSupply = ({ name, schX, schY, showAsSchematicBox }:ModuleProps) => {
  return (
    <subcircuit exposedNets={["VIN_P","PRI_GND", "VOUT_12V", "VOUT_3V3", "VOUT_1V2","SEC_GND"]} name={name} showAsSchematicBox={showAsSchematicBox} schX={schX} schY={schY}>
      <port name="VIN_P" direction="left" connectsTo={["C_in.pin1"]} />
      <port name="PRI_GND" direction="left" connectsTo={["C_in.pin2"]} />

      <port name="VOUT_12V" direction="right" connectsTo={["C13.pin1"]} />
      <port name="VOUT_5V" direction="right" connectsTo={["C_5v_2.pin1"]} />
...
```
```microcontroller-module.tsx
export const MicrocontrollerModule = ({ name, schX, schY, showAsSchematicBox }:ModuleProps) => {
  return (
    <subcircuit name={name} exposedNets={["SWDIO","SWCLK", "NRST", "GND", "3V3","ADC_IN", "UART_TX", "UART_RX", "SPI_SCK","SPI_MISO","SYNC_GPIO", "CONTACTOR_GPIO"]} showAsSchematicBox={showAsSchematicBox} schX={schX} schY={schY}>
      {/* 1. Module Ports (Automatically route to target pins) */}
      <port name="SWDIO" direction="left" connectsTo={["U1.pin34"]} />
      <port name="SWCLK" direction="left" connectsTo={["U1.pin37"]} />
...
```
```control-circuit.tsx

import { MicrocontrollerModule } from "./microcontroller-module/Workspace/microcontroller-module"
import { LowVoltagePowerSupply } from "./low-voltage-power-supply/Workspace/low-voltage-power-supply"

export const ControlCircuit = () => {
  return (
    <group name={name} showAsSchematicBox={showAsSchematicBox} schX={schX} schY={schY}>
        <LowVoltagePowerSupply name="lvps" schX={0} schY={0} showAsSchematicBox={true} />
        <MicrocontrollerModule name="mcu" schX={10} schY={0} showAsSchematicBox={true} />
        <trace name="t_v3v3_link" path={["lvps.VOUT_3V3", "mcu.3V3"]} />
        <trace name="t_gnd_link" path={["lvps.SEC_GND", "mcu.GND"]} />
        ...

```