Recently, i just started to use thingspeak (link: https://thingspeak.com/channels/232957). I'm using Arduino and esp8266 for internet connection. I'm using serial monitor to upload a value. I found an odd issue like this:
AT+CIPSTART="TCP","188.8.131.52",80 AT+CIPSEND=48 GET /update?api_key=AYPJYH6PHJ0LIEL7&field1=30
Here are the responds:
AT+CIPSTART="TCP","184.108.40.206",80 CONNECT OK AT+CIPSEND=48 OK > Recv 48 bytes SEND OK +IPD,2:15CLOSED
For value 30 it's uploaded successfully to thingspeak. But whenever i change the value, like become 35 or another 2 digit value, it always responds bad request. But when i try at browser any value works.
Anybody experienced same thing?
nb: on my channel, value 36 is uploaded via browser
so I can tell you this pair works. My channel has 4000000+ points recorded, with AT commands and for $ 10
I hope I have helped
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