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Jebao DP4 WiFi Hack

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diverjoe edited this page May 17, 2018 · 14 revisions

Notes

  • The DP4 was used because it had the pumps already mounted in a nice box as well as the electronics to turn the pumps on and off.
  • The connector on the controller card that the ESP8266 hooks into is connected pretty much directly to a 74HC595 Shift Register. The code uses the pump number from the topic and the 1 or 0 from the payload and sets the registers using Shifty, a standard Arduino library.
  • The ESP8266 gets its commands from the system over WiFi using MQTT - a kinda of email for computers. It has a subject or topic and a body called the payload. You can add as many other named tags you want to be used by the subscriber. In this case it is the pump.

Connection Diagram

Circuit

Video to show how to open DP4

(How to Open DP4 case)

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