12
votes
How to get HTTPS on Arduino?
(Disclaimer: I'm actually the author of the evothings.com article)
The Arduino UNO is more than capable at doing TLS. I've just finished up a blog post series on the topic. I have a working example of ...
- 121
3
votes
Web page using bluetooth?
No. There is no such facility in Bluetooth to provide such a feature. That's not to say that technically it can't be done, there just isn't any software (a web browser) that would support it.
...
- 106k
3
votes
esp8266 WiFi Cannot Connect to a PHP Server
This line:
if (client.connect(server,80 && LED == HIGH)) {
is definitely not going to do anything useful. Nor is this line:
else if(client.connect(server,80 && LED == LOW)) {
In ...
- 1,553
2
votes
Problem with sending a POST request using the WiFiEsp library
Your problem is the content you are sending. While this format works well e. g. in Python libraries, this library seems to have a problem with it.
I solved it this way, when I happened to face this ...
- 21
2
votes
Accepted
Cannot run arduino as web client
This could be an SD card SPI bus issue.
Note that because the W5100 and SD card share the SPI bus, only one can be active at a time. If you are
using both peripherals in your program, this should be ...
- 144
2
votes
ESP8266 + Slack (ssl->need_bytes=16432 > 6859)
replace rtm.start with rtm.connect as per April 2017 Recent Updates log
2
votes
Accepted
How do I get an HTTP_POST response?
You have:
server.on("/", handleRoot);
server.on("/test.svg", drawGraph);
server.on("/",HTTP_POST,response);
The first call using handleRoot species no particular method, ...
- 5,414
2
votes
Accepted
Error 101 Server Did Not Report Size from OTA Upgrade framework via git hub
The ESP8266httpUpdate library wants to know in advance how large the file is before it starts downloading it. It wants to know this so it can tell, before trying to download (and program), whether or ...
- 5,414
2
votes
Web page using bluetooth?
There is an experimental feature called the Web Bluetooth API. You could host a single file on a Webserver which then interacts via Bluetooth with your ESP. Keep in mind that aside from localhost you ...
- 174
1
vote
How to webClient.write() an image stored on a String?
OK, I got it to work as follows:
Not passing the binary anymore, passing the file name so the FTPPost function will do its own reading of the file on SPIFFS and will post in 256 bytes chunks.
The same ...
- 95
1
vote
How to webClient.write() an image stored on a String?
You should not use String to store binary data.
Instead allocate yourself an array of uint8_t of the right size.
uint8_t *imageData;
size_t len = file.size();
imageData = alloca(len);
file.readBytes(...
- 106k
1
vote
Accepted
Run website / Javascript game from a Arduino UNO device?
The Arduino cannot run Javascript, no.
It could serve Javascript from an SD card to a web browser running on a PC / Pi / Phone, etc, but there is no way it can run it itself.
- 106k
1
vote
NodeMCU display temperature and control LED from an autorefresh web page
Write handlers for different URLs
server.on("/5/on", led5On);
server.on("/5/off", led5off);
do you get the concept?
or you could write one handler server.on("/setLED", setLED);, if you would ...
- 18.2k
1
vote
Web page using bluetooth?
Program your ESP32 to connect to your wifi - it then gets its own IP address on your LAN (e.g. 192.168.1.123 ) - then connect to your ESP from your phone (or anything else on your LAN).
Have you tried ...
- 121
1
vote
Creating a Web Interface for ESP32
I would highly recommend splitting it into two parts: back end (C++) and front end (JS). You'll probably want to connect to a router, so your clients, like a phone and laptop need not be on that AP ...
- 1,037
1
vote
Accepted
Arduino connection websocket always fails
With the help of the library developer, I found out that it was a problem on the handshake version. So, I just downgraded my socket.io app from 1.0 to v 0.9.11 and it worked.
1
vote
Clear GET params from URL
this is exaclty waht get are supposed to do. Use a POST or use a redirect; a POST is way better as the "back" button of the browser will take care of it
- 781
1
vote
How to get HTTPS on Arduino?
Using of WiFi shield can be a solution - it supports HTTPS.
https://www.arduino.cc/en/Reference/WiFi101
- 111
Only top scored, non community-wiki answers of a minimum length are eligible