Learn the API by running it live. Cloud API development walks the steps through the cloud (login, controllers, decoders, programs, log); Serial development runs the controller’s command set straight down an RS232 cable.
Chrome/Edge only. Because this page is served over https (a secure
context), the browser can open a COM port directly — like PuTTY. Close PuTTY first:
only one program can hold the port. The serial data never leaves this machine.
Live view of everything sent (» lines) and received. Type a command below and press Enter to send it by hand — like PuTTY. The steps further down write here too.
ts/rt feed step 4. Steps 5+ cover
the rest of the command set — TW (2-wire line), LU (decoders), WE (watering engine) and the
compact/where params. ⚠-marked steps actuate real hardware. Commands are saved in
this browser.