Micropython on Lolin v3 (ESP 8266 12e) - OSError: [Errno 103] ECONNABORTED

[jebh90]

Hi, I'm quite new to micropython. I have flashed the 1.9.2 version on my Lolin v3 (Nodemcu 12e).
I load the code using ampy command, then open terminal with Putty, and reset the board. i get this error while trying to use the sentence "connect()":

Traceback (most recent call last):
File "main.py", line 44, in
File "umqtt/simple.py", line 56, in connect
OSError: [Errno 103] ECONNABORTED

MicroPython v1.9.2-8-gbf8f45cf on 2017-08-23; ESP module with ESP8266

import time
import machine
import network
import gc
import dht
from umqtt.robust import MQTTClient

#DHT PIN
d = dht.DHT11(machine.Pin(14))
led = machine.Pin(16, machine.Pin.OUT)
gc.enable()


def do_connect():
wlan = network.WLAN(network.STA_IF)
wlan.active(True)
if not wlan.isconnected():
print('connecting to network...')
wlan.connect('SSID', 'PASSWORD')
while not wlan.isconnected():
pass
print('network config:', wlan.ifconfig())


for i in range(20):
do_connect()
thingspeakChannelId = "MyChannelID" # Thingspeak Channel ID
thingspeakChannelWriteapi = "MyWriteKey" # Write API Key
myMqttClient = "esp8266_mp"
thingspeakIoUrl = "mqtt.thingspeak.com"
publishPeriodInSec = 15
print("Control 1")
c = MQTTClient(myMqttClient, thingspeakIoUrl, 1883)
print("Control 2")
d.measure()
temp = d.temperature()
humidity = d.humidity()
print("Control 3")
credentials = "channels/{:s}/publish/{:s}".format(thingspeakChannelId, thingspeakChannelWriteapi)
print("Control 4")
payload = "field1={:.1f}&field2={:.1f}\n".format(temp, humidity)
print("Control 5")
c.connect() #HERE
print("Control 6")
c.publish(credentials, payload)
print("Control 7")
for i in range(5):
led.low()
time.sleep(0.05)
led.high()
time.sleep(0.05)
print("Sending data...", gc.mem_free())
time.sleep(publishPeriodInSec)

c.disconnect()
machine.reset()
Thanks for your time, if there is any problem regarding the information or post structure, tell me and I will try to fix it.

[pythoncoder]

Can you connect to Thingspeak using a PC based client such as Mosquitto? Do you require credentials to connect?

[jebh90]

Thanks for you reply. I will have to wait to verify it since I don't manage the firewall, but it looks like it's stopping me from connecting. Anway, thanks for your reply and your help. (Looks like previous post saying thanks wasn't send properly but I'm not sure )