Last Updated on 01/08/2022 by Kevin Agar
Following on from my post Changing MaxAir gateway from WiFi to Ethernet, this is the latest iteration of the Gateway that can be set as either WiFi or Ethernet in a compact package.
The gateway is using a WT32-ETH01 that can be purchased at numerous outlets, for example, AliExpress, eBay, Amazon, etc
It also uses an NRF24L01+PA+LNA module that can be purchased at numerous outlets, for example, AliExpress, eBay, Amazon, etc
Terry, the main developer of this gateway for MaxAir, has created a board to mount everything on. I’m not sure if he has this board for sale but he can be contacted at Discord>PiHome HVAC
The sketch can be downloaded from MaxAir at https://github.com/twa127/PiHomeHVAC/tree/main/Arduino_Sketches/nRF24L01/MaxAir_GatewayWT32_ETH01_v001
or from the MaxAir controller at /var/www/Arduino_Sketches/nRF24L01/MaxAir_GatewayWT32_ETH01_v001
The README.md file below gives information about the gateway and what’s needed to program it.
Initial Release of Gateway sketch for WT32-ETH01 wireless-tag board.
Implements WirelessManager.
Can be configured for NRF24L01, or RFM69 or RFM95 wireless modules.
Jumper for WiFi only mode.
Jumper for Ethernet only mode.
Jumper to clear EEPROM of saved wireless credentials.
Connection can be either WiFi or Ethernet or both.
Compiled as ESP32 Dev Module.
Pin Usage
| Pin Name | Function |
|---|---|
| TX0 | Serial OUT |
| RX0 | Serial IN |
| IO0 | Program Select Jumper (10K Pull-up Resistor to 3V3) |
| IO2 | Radio MOSI |
| IO4 | Radio CE |
| TXD (IO5) | RX LED |
| IO12 | Radio MISO |
| IO14 | Radio SCK |
| IO15 | Radio SS |
| RXD (IO17) | ERR LED |
| CFG (IO32) | Disable Ethernet Interface Jumper (10K Pullup Resistor to 3V3) |
| 485_EN (IO33) | TX LED |
| IO35 | Disable WiFi Interface Jumper (10K Pullup Resistor to 3V3) |
| IO36 | Radio IRQ (10K Pullup Resistor to 3V3) |
| IO39 | Clear WiFi Credentials Jumper (10K Pullup Resistor to 3V3) |
| 5V | 5volt Power Input |
| 3V3 | 3.3volt Power Out to Radio |
| GND | Common Ground |
Install support for ESP32 boards by using Additional Boards Manager URL: https://dl.espressif.com/dl/package_esp32_index.json and searching for esp32
Board type to be selected is ‘ESP32 Dev Module’
The sketch uses WiFiManager and WebServer_WT32_ETH01 libraries and requires a change to the file MyGatewayTransportEthernet.cpp.
In the Arduino IDE install the ZIP library WebServer_WT32_ETH01.zip
Copy the folder WiFiManager to …\Documents\Arduino\libraries
Modify the file …\Documents\Arduino\libraries\MySensors\core\MyGatewayTransportEthernet.cpp as per the instructions at https://www.pihome.eu/2021/10/06/wifimanager-with-mysensors/
Programming mode:
