Unable to write data to ThingSpeak , HTTP error 400
57 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
Hello,
I am trying to transfer data by using program "Typical Write Example" running on ESP8266 NodeMCU. I didn't change he program , only added my Network name, network password, channel number and APIWriteKey. The Program is running on ESP8266 or ESP32. In both cases the response is always "400".
Don't have more detailed information.
Any idea on the cause ? Router problem , Arduino IDE 1.8.10 or ?
Any comment is appreciated.
Kind regards
0 comentarios
Respuestas (3)
Vinod
el 6 de En. de 2020
Hello Otto,
Can you start from one of the examples in the library here: https://github.com/mathworks/thingspeak-arduino
Are you getting 400 status codes for those examples?
-Vinod
Christopher Stapels
el 6 de En. de 2020
Can you try to update your channel from a web browser? Use the format
https://api.thingspeak.com/update?api_key=xxxxxxxxxxxxxxxx&field1=1230 but change the api key to match.
Does that work?
9 comentarios
Nazmi Rosly
el 16 de Ag. de 2021
Editada: Christopher Stapels
el 17 de Ag. de 2021
Hi. Im trying to send data from matlab which is the data from serial monitor from arduino. It is fine until 9th of data and then it stopped and says :
Error using Untitled (line 27)
'Values' must have a maximum of 9 elements, including the timestamp.
My coding is:
clear all
s = serial('com4');
fopen(s);
i = 1;
while(1)
data(i)= str2double(fscanf(s));
plot(data);
title('Temperature Monitoring')
xlabel('Time')
ylabel('Temperature')
pause(30);
i=i+1;
%thingSpeakWrite(1463959,data,'WriteKey','xxxxxxxxxxxxxxxx')
% Generate timestamps for the data
%tStamps = datetime('now')-minutes(9):minutes(1):datetime('now');
channelID = 1463959; % Change to your Channel ID
writeKey = 'xxxxxxxxxxxxxxxx'; % Change to your Write API Key
% Write 10 values to each field of your channel along with timestamps
tStamp = datetime('now')
thingSpeakWrite(1463959,data,'WriteKey','xxxxxxxxxxxxxxxx','TimeStamp',tStamp)
end
0 comentarios
Comunidades de usuarios
Más respuestas en ThingSpeak Community
Ver también
Categorías
Más información sobre REST API en Help Center y File Exchange.
Productos
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!