Troubleshooting: Zap Connected but No Data in App

Sometimes your Zap device might be successfully onboarded and connected to WiFi, but you're not seeing any data in the Sourceful Energy app. Here's how to diagnose and fix the issue.

Quick Check: Query Your Device Directly

The fastest way to check if your Zap is receiving data from your meter is to query it directly through your web browser.

Step 1: Access the Raw Data

While connected to the same network as your Zap, open your web browser and go to:

http://zap.local/api/data/p1/obis

What You Should See

If everything is working correctly, you'll see raw OBIS data that looks something like this:

{ "status": "success", "ts": 1753186891374, "data": [ "0-0:1.0.0(250722132130W)", "1-0:1.8.0(00062012.537*kWh)", "1-0:2.8.0(00009198.043*kWh)", "1-0:3.8.0(00000266.920*kVArh)", "1-0:4.8.0(00009464.074*kVArh)", "1-0:1.7.0(0000.000*kW)", "1-0:2.7.0(0005.521*kW)", // ... more data lines ] }

This raw data contains your meter readings in OBIS format. Each line represents a different measurement from your meter.

If zap.local Doesn't Work

Some older routers don't support mDNS (the technology that makes .local addresses work). If you can't access http://zap.local/, you'll need to find your Zap's IP address manually:

1. Check your router's admin panel for connected devices

2. Look for a device named esp32c3-XXXXXX (where XXXXXX is a unique identifier)

   • Example: esp32c3-3421E4

   • This is the hostname your Zap device uses when registering with your router

3. Use the IP address instead: http://192.168.x.x/api/data/p1/obis

You can also access the device's main page at http://zap.local/ (or the IP address) to check signal strength (RSSI) and other diagnostics.

Common Issues and Solutions

No Data or Empty Response

If you're getting an empty response or no data array, here are the most common causes:

1. P1 Port Not Activated

• Many utility meters have the P1 port disabled by default

• Contact your power company to request P1 port activation

• This is often a free service but may require a technician visit

2. Incompatible Meter

• Some meters use encryption or proprietary protocols

• Not all meter types are supported yet

• If you're getting data but the app still shows nothing, save the raw output and contact support

3. Connection Issues

• Ensure the RJ12 cable is firmly connected to both the meter and Zap

• Try unplugging and reconnecting the cable

• Check that you're using the correct port on your meter (usually labeled P1)

Data Shows Locally but Not in App

If you see data when querying directly but nothing in the app:

1. Check your Zap firmware version (check latest release: https://github.com/srcfl/srcful-zap-firmware/releases)

2. Ensure your device has a stable internet connection

3. Wait a few minutes - sometimes initial sync can be delayed

4. Try power cycling the device (unplug for 10 seconds)

Need More Help?

If you're still experiencing issues after these steps:

1. Take a screenshot of the raw data output (if any)

2. Note your meter make and model

3. Contact support with this information

We're continuously adding support for new meter types, so even if yours isn't compatible today, we may be able to add support through a firmware update.

Advanced Network Discovery Methods

For technical users who are comfortable with command-line tools, here are additional ways to find your Zap device:

Using ping (Windows/Mac/Linux)

ping zap.local

This will show you the IP address even if your browser can't resolve zap.local.

Using arp (Linux/Mac)

arp -a | grep esp32c3

This scans your network's ARP table for the device. Look for entries like:

esp32c3-3421E4.localdomain (192.168.1.235) at dc:06:75:34:21:e4

Using network scanning apps

Many mobile apps can scan your local network:

• Fing (iOS/Android) - Shows all devices with their hostnames

• Network Analyzer (iOS) - Provides detailed network information

• IP Scanner (Mac) - Desktop tool for network discovery

These tools will show devices named esp32c3-XXXXXX with their corresponding IP addresses.