KeWee Energy Meters Spring 2023 Update

1. The server will have an account management page or pages for users to handle various account settings, particularly pertaining to registering new devices.
   • Assignee: Evan Grahs
   • Status: Completed
     The server has a page for this now, but it ended up not being very useful yet in terms of functionality needed. Mostly handled on-device.

1. The device will have an on-board setup interface or mechanism to facilitate initial registration with the server and assignment to a user account.
   • Assignee: Evan Grahs
   • Status: Completed
     The device acts as an Access Point and broadcasts an SSID for setup, connecting to this network and visiting 192.168.4.1/config.html allows access to this interface.

2. The device will be able to use supplied configuration data to connect to a wireless network and begin transmitting data (not necessarily actual value readings) to a specified host after setup is completed.
   • Assignee: Evan Grahs
   • Status: Completed
     The device takes info presented from the aforementioned config.html and connects to the network, registers with the server to obtain its authentication token, and begins transmitting data once registration is completed.

Info: Scanning for saved WiFi network…
Scanned SSID’s: Skynet.
Info: Saved network found! Attempting to connect…
Info: Attempting to connect to WPA/WPA2 SSID: Skynet
Info: Connection successful!
Info: Attempting to connect to server for initial registration…

———– | Start of HTTP Post Pairs | ———–
serial<6>=1111111117<10>&
macaddress<10>=1a1a1a1a1a17<12>&
username<8>=Demo<4>
———– | End of HTTP Post Pairs | ———–

———– | Start of HTTP Post Request | ———–
POST /device/register/index.php HTTP/1.1
Host: 10.0.0.10
Accept-Encoding: identity
Content-Type: application/x-www-form-urlencoded
Content-Length: 55

serial=1111111117&macaddress=1a1a1a1a1a17&username=Demo
———– | End of HTTP Post Request | ———–

———– |BEGIN INCOMING HTTP RESPONSE| ———–
HTTP/1.1 200 OK
Server: nginx/1.18.0 (Ubuntu)
Date: Wed, 26 Apr 2023 19:03:03 GMT
Content-Type: text/html; charset=UTF-8
Transfer-Encoding: chunked
Connection: keep-alive

28
Success:13iy00e6yqe8g808cwc40wg00w4wwgco
0

———– | END INCOMING HTTP RESPONSE | ———–

———– | Parsing data… | ———–
Info: Good response (200 OK).
Index Update: 15, 45
Index Update: 45, 81
Index Update: 81, 120
Index Update: 120, 147
Info: Transfer-Encoding header identified with value ‘chunked’.
Index Update: 147, 170
Index Update: 170, 171
Info: Headers complete. Moving on to body…
Index Update: 171, 174
Info: Processing next chunk of length 40.
Index Update: 174, 215
Info: Chunk processing complete.
Index Update: 215, 217
Info: Processing next chunk of length 0.
Index Update: 217, 218
Info: Body complete. Wrapping up…
Index Update: 218, 219
Info: HTTP Response completed properly with body length 40.
Body Data = Success:13iy00e6yqe8g808cwc40wg00w4wwgco
———– | Parsing Success | ———–

Info: Registration response is positive and of the expected length…
Info: Registration succeeded! Saving authentication token…
Token: 13iy00e6yqe8g808cwc40wg00w4wwgco, Size: 32
Writing file: /littlefs/authToken => Open OK
Writing OK
Info: Authentication token saved!
HTTP Response modified storage… Reloading.
Info: Attempting to upload data to the server…
Voltage Sensor Reading: 132.32
Current Sensor Reading: 6.79

———– | Start of HTTP Post Pairs | ———–
serial<6>=1111111117<10>&
macaddress<10>=1a1a1a1a1a17<12>&
token<5>=13iy00e6yqe8g808cwc40wg00w4wwgco<32>&
data_voltage<12>=132322<6>&
data_current<12>=6786179<7>
———– | End of HTTP Post Pairs | ———–

———– | Start of HTTP Post Request | ———–
POST /device/upload/index.php HTTP/1.1
Host: 10.0.0.10
Accept-Encoding: identity
Content-Type: application/x-www-form-urlencoded
Content-Length: 121

serial=1111111117&macaddress=1a1a1a1a1a17&token=13iy00e6yqe8g808cwc40wg00w4wwgco&data_voltage=132322&data_current=6786179
———– | End of HTTP Post Request | ———–

———– |BEGIN INCOMING HTTP RESPONSE| ———–
HTTP/1.1 200 OK
Server: nginx/1.18.0 (Ubuntu)
Date: Wed, 26 Apr 2023 19:03:03 GMT
Content-Type: text/html; charset=UTF-8
Transfer-Encoding: chunked
Connection: keep-alive

b
Data Saved.
0

———– | END INCOMING HTTP RESPONSE | ———–

———– | Parsing data… | ———–
Info: Good response (200 OK).
Index Update: 15, 45
Index Update: 45, 81
Index Update: 81, 120
Index Update: 120, 147
Info: Transfer-Encoding header identified with value ‘chunked’.
Index Update: 147, 170
Index Update: 170, 171
Info: Headers complete. Moving on to body…
Index Update: 171, 173
Info: Processing next chunk of length 11.
Index Update: 173, 185
Info: Chunk processing complete.
Index Update: 185, 187
Info: Processing next chunk of length 0.
Index Update: 187, 188
Info: Body complete. Wrapping up…
Index Update: 188, 189
Info: HTTP Response completed properly with body length 11.
Body Data = Data Saved.
———– | Parsing Success | ———–
Info: Data point uploaded successfully!
Info: Attempting to upload data to the server…
Voltage Sensor Reading: 131.93
Current Sensor Reading: 6.82

———– | Start of HTTP Post Pairs | ———–
serial<6>=1111111117<10>&
macaddress<10>=1a1a1a1a1a17<12>&
token<5>=13iy00e6yqe8g808cwc40wg00w4wwgco<32>&
data_voltage<12>=131925<6>&
data_current<12>=6816736<7>
———– | End of HTTP Post Pairs | ———–

———– | Start of HTTP Post Request | ———–
POST /device/upload/index.php HTTP/1.1
Host: 10.0.0.10
Accept-Encoding: identity
Content-Type: application/x-www-form-urlencoded
Content-Length: 121

serial=1111111117&macaddress=1a1a1a1a1a17&token=13iy00e6yqe8g808cwc40wg00w4wwgco&data_voltage=131925&data_current=6816736
———– | End of HTTP Post Request | ———–

———– |BEGIN INCOMING HTTP RESPONSE| ———–
HTTP/1.1 200 OK
Server: nginx/1.18.0 (Ubuntu)
Date: Wed, 26 Apr 2023 19:03:13 GMT
Content-Type: text/html; charset=UTF-8
Transfer-Encoding: chunked
Connection: keep-alive

b
Data Saved.
0

———– | END INCOMING HTTP RESPONSE | ———–

1. The entire device will have design files compatible with and editable from free and open-source software.
   • Assignees: Evan Grahs, Bill Matt, Justin Rish
   • Status: Completed
     Arduino Code and KiCad Schematics provided at https://osf.io/9pn2d/.

2. The device will be capable of measuring voltages and currents of a single connected device.
   • Assignees: Bill Matt, Justin Rish
   • Status: Completed
     The device can measure both rms voltage and current values.

3. The device will measure voltage and current within reasonable accuracy, specific accuracy defined at a later date.
   • Assignees: Bill Matt, Justin Rish
   • Status: Completed
     View the chart below. More precise testing and calibration to be completed soon.

4. The device will have an outlet that the user can connect a device to.
   • Assignee: Justin Rish
   • Status: Completed
     Image below showing a soldering fan connected to the outlet.

5. The device will have some appropriate safety measures or design features in place for the outlet to remain safe.
   • Assignee: Justin Rish
   • Status: Completed
     Current sensor is in series with a fuse, and control circuit is protected by an optocoupler. Image shown below.