added TTGO board (need to update pins)

platformio.ini

@@ -35,3 +35,14 @@ lib_deps =
 	256dpi/MQTT@^2.4.8
 	http://192.168.2.3/Bonobo.Git.Server/OLEDDisplay.git
 monitor_speed = 115200
+
+[env:ttgo-t18]
+platform = espressif32
+board = ttgo-t1
+framework = arduino
+build_flags = -D ENVIRONMENT=3
+lib_deps = 
+	ericksimoes/Ultrasonic@^3.0.0
+	256dpi/MQTT@^2.4.8
+	http://192.168.2.3/Bonobo.Git.Server/OLEDDisplay.git
+monitor_speed = 115200

src/hal.h

@@ -12,7 +12,9 @@
 
 #define HELTECv2   1
 #define LOLIN32    2
-#define HELTECv21  3
+#define TTGO_T18   3
+#define HELTECv21  4
+
 
 
 #if ENVIRONMENT == HELTECv2 //HELTEC WIFI LORA V2
@@ -48,4 +50,17 @@
 
 #endif
 
+#if ENVIRONMENT == TTGO_T18 //LOLIN32
+
+#define SDA_OLED  15
+#define SCL_OLED   4
+#define RST_OLED  17
+
+#define TRIGGER   13
+#define ECHO      14
+
+#define VBATT     ADC2_CHANNEL_1
+#define VEXT      21
+#endif
+
 #endif //HALH