I found it worked but it has a delay. I will repost my question later.
I would like to turn on a kitchen light when there is motion of a blink camera and turn off the light when 2 minutes has passed without any motion events.
I followed other Q&As and made four sequences. When I started "Check Now" of the first IFTTT applet (IFTTT webhook) in an IFTTT app, all sequences worked. However, when a blink camera detected motion, it didn't trigger sequences. I put the same URL (http://sequematic.com/trigger-ifttt-webhook/*****/*****/camera_motion) and Method (get) in an IFTTT applet. The IFTTT key was correctly put in the settings too. Because sequences worked after clicking "Check Now", I don't think my sequences and iFTTT applets are wrong.
Please let me know what you think.
I found it worked but it has a delay. I will repost my question later.
I'm glad it's working for you. If there is a delay, I expect this would be between when the motion detection is sent to IFTTT and IFTTT calls the webhook.
You can test the responsiveness of the webhook by pasting the URL directly in your browser. You should find it triggers the sequence immediately.