esp8266twitter

direct text post using esp8266/Arduino without 3rd party api.

https://dev.twitter.com/rest/reference/post/statuses/update

Based on

• tweeting_silicon : http://harizanov.com/2015/06/tweeting-silicon/
• https://github.com/igrr/axtls-8266/blob/master/crypto/hmac.c
• http://hardwarefun.com/tutorials/url-encoding-in-arduino

• Use ntp or rtc to sync time
• constructors : esp8266Twitter esp8266Twitter(consumer_key, consumer_secret, access_token, access_secret);
• to tweet : esp8266Twitter.tweet(message, value_timestamp, value_nonce)

Limitations

• no rate limit checking
• no 140 limit checking

To use oauth :

• make an app at https://apps.twitter.com
• generate Access Token / Secret.
• Use 4 keys to sketch

for image on spiffs

• post with media upload (if image is big, timout will occur) : https://github.com/chaeplin/esp8266_and_arduino/blob/master/_56-gopro-control/a-09-twitter-image-post/a-09-twitter-image-post.ino
• post with APPEND(chunked) : https://github.com/chaeplin/esp8266_and_arduino/blob/master/_56-gopro-control/a-09-twitter-image-post/a-09-twitter-image-post.ino
• upload image to twitter is slow(3 ~ 4KB/s)

Enjoy.

// chaeplin