Heroku Cedar: How to scale WEB dynos based on time of day

Question

I want my Rails 3.1 app to scale up to 1 web dyno at 8am, then down to 0 web dynos at 5pm.

BUT, I do not want to sign up for a paid service, and I cannot count on my home computer being connected to the internet.

It seems like the Heroku Scheduler should make this trivial. Any quick solutions or links?

Answer 1

As an update to @Ren's answer, Heroku's Platform API gem makes this really easy.

heroku = PlatformAPI.connect_oauth(<HEROKU PLATFORM API KEY>)
heroku.formation.batch_update(<HEROKU APP NAME>, {"updates" => 
  [{"process" => <PROCESS NAME>, 
  "quantity" => <QUANTITY AS INTEGER>, 
  "size" => <DYNO SIZE>}]
})