ESP32 WeMos LOLIN32 EByte LoRa E32, E22 and E220 shield
I’m going to publish my LoRa shield for WeMos LOLIN32. This is one of my favorite microcontrollers, and until now, I have been using a simplified version of shield for rapid prototyping, but in the end, I created a more complete version, and I share it with everyone.
You can find more information about WeMos LOLIN32 here “ESP32 WeMos LOLIN32 high-resolution pinout and specs”
I also created a PCB for ESP32 DOIT DEVKIT v1, and you can find It here “Ebyte LoRa E32 device for Arduino, esp32 or esp8266: WOR (wake on radio) and new ESP32 shield“.
Here is the schema of the PCB
You can configure all operating modes and power supply of the LoRa device.
The result is this:
The standard configuration, with a jumpers in standard position, is
LoRa_E22 e22ttl100(&Serial2, 15, 21, 19); // RX AUX M0 M1
But with a jumpers, you can select
Serial2as UART interface
With the selector of the pin to the fixed mode, you can choose if you want to manage M0 and M1 with the pin of ESP32 or directly with fixed LOW, and HIGH selected in the switch.
WeMos LOLIN32 AliExpress ESP32 Dev Kit v1 - AliExpress selectable - AliExpress TTGO T-Display 1.14 ESP32 - AliExpress NodeMCU V3 V2 ESP8266 Lolin32 - AliExpress WeMos Lolin32 CP2104 CH340 - AliExpress ESP32-CAM programmer - AliExpress ESP32-CAM bundle - AliExpress ESP32-WROOM-32 - AliExpress ESP32-S
|1||Lora E32-TTL-100||variant 1; voltage 3-5V; type Basic|
|1||DIP SWITCH||channels 1; package dipswitch-02|
|2||Generic male header – 3 pins||pins 3; pin spacing 0.1in (2.54mm); hole size 1.0mm,0.508mm; form ♂ (male); package THT; row single|
|1||ESP32 DOIT DEVKIT v1||type esp8266|
|3||4.7kΩ Resistor||bands 4; tolerance ±5%; pin spacing 400 mil; package THT; resistance 4.7kΩ|
|3||2kΩ Resistor||bands 4; tolerance ±5%; pin spacing 400 mil; package THT; resistance 2kΩ|
|Generic female header||Pin spacing 0.1in (2.54mm);|
|Generic male/female header||Pin spacing 0.1in (2.54mm);|
You can buy the PBC for few dollars here PCBWay
I chose this manufacturer because at the same cost it offers excellent quality, in the first screen it is possible to make countless options suitable for every need.