Zappy 2 lines

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SeventyFive

Hobby & DIY>Electronics

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A1 mini

X1 Carbon

H2D

P2S

H2S

H2C

X1E

P1P

H2D Pro

P1S

X2D

A2L

0.2mm layer, 2 walls, 15% infill

Designer

6.3 h

3 plates

Open in Bambu Studio

Boost

Released

Bill of Materials

List other parts

Shuko plugs x 2:
Esp32 devkit x 1:
2 Rele module x 1:

Description

Zappy is a compact ESP32-based two-channel relay module that allows you to remotely control devices over Wi-Fi.

It is designed to work with LoopMax, a modular operating system I developed to manage ESP32 projects in a clean, scalable, and reusable way.
LoopMax makes it easy to build applications composed of independent modules, suitable for home automation, IoT control, and custom projects.
More details here:
👉 https://github.com/Nando75/LoopMax

🔌 What Zappy can do

Control two independent relays
Turn devices ON / OFF remotely
Suitable for lights, sockets, automation systems, DIY IoT projects
The images show the simple and reliable circuit used in the module
NEW: Added PinScheduler — each channel can now be programmed independently
Two scheduling modes available: one‑time events and weekly recurring programs

The images show the simple and reliable circuit used in the module.

🚀 WEB UI (bootstrap bundle)

Device can operate as Access Point or lan connected :

For experts, the code is open and customizable, available on github:
https://github.com/Nando75/LoopMax

🚀 Firmware upload

Firmware can be uploaded directly from the browser using my web flasher (no IDE required):
👉 https://smartilab.it/tools/

🧠 Requirements

ESP32 with Wi-Fi 4 MB flash.

This project is part of a modular ecosystem and can be easily extended with additional modules.

Safety Disclaimer
This project involves mains voltage and potentially dangerous currents.
It is intended for users with basic experience in electronics and electrical safety.
Always disconnect power before working on the circuit and follow local regulations.
Use this project at your own risk. The author is not responsible for injuries, damaged devices, burned houses, unexpected fireworks, or other creative disasters caused by improper use.

🕒 PinScheduler (NEW)
A new update introduces full scheduling capabilities. When operating in LAN Mode with an active internet connection, the device automatically synchronizes its internal clock. Thanks to the new Scheduler class, Zappy 2ch can now manage two types of On/Off programs:
✔️ Weekly Schedule
Repeats automatically on selected days of the week.
✔️ One‑Time Schedule
Executes once at the specified date and time, then automatically expires.

✔️ Active programs

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License

This user content is licensed under a Standard Digital File License.

You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.