Thank you for your feedback. I was basing my approach on the Arduino_Serial_USB example as instructed in this post: Serial Debug for Arduino UNO connected on USB
Seeing the documentation you shared, I thought I’d rewire the Debug Serial to my Nano’s Serial and the ESP8266 to a SoftwareSerial. Adding in the BLYNK_DEBUG definition now gives a slightly more detailed output, but still halts after connection:
[688] Connecting to WiFi_SSID
[13723] WIFI CONNECTED
WIFI GOT IP
AT wersion:1.4.0.0(May 5 2017 16:10:i2
[17804] +CIFSR:STAIP,“60.25.12.64”
+CIFSR:STAMAC,“5c:cf:7f:3c:c8:9c”[17815] Connected to WiFi
*Note: I am powering the device directly from a power supply, so I don’t expect any interference on the Debug serial bus.
Updated code segment (first lines of script):
#define BLYNK_PRINT Serial
#define BLYNK_DEBUG
#include <SoftwareSerial.h>
SoftwareSerial EspSerial(2, 3); // RX, TX