ESP32 Sunset Relay Control Code

@amelectronics

Hi, I have experience in designing Circuits and can complete your project. I have expertise in the following: 1- Designing schematic and PCBA 2- Ordering the PCBA and getting boards manufactured. 3- Writing firmware for the PCBA to make sure everything works as expected. 4- I can also develop smartphone apps to communicate and control the hardware. If you wish we can discuss in chat. Thank you.

@hayteekeys

HI, KINDLY READ THROUGH MY PROPOSAL I will deliver a clean, well-commented ESP32 Arduino sketch that fetches the daily sunset time from WeatherAPI (Indian endpoint), parses it accurately, and drives a relay at the correct moment with full fail-safe behaviour. MY APPROACH ✅ Wi-Fi credentials and API key in a clearly marked, editable section ✅ Daily HTTP GET to WeatherAPI with easy city or lat/long selection ✅ Robust JSON parsing of the sunset field and 24-hour conversion ✅ RTC comparison with 5-minute window to prevent relay chatter ✅ Fail-safe: retain previous schedule and Serial logging on error DELIVERABLES - Fully working .ino file (Arduino IDE / PlatformIO ready) - Brief README with libraries, JSON example and configuration points QUESTIONS 1. Preferred GPIO pin for the relay and active-high or active-low? 2. Exact location format you prefer (city name or lat/long)? 3. Any specific RTC library already in use on the ESP32? Ready to start as soon as the relay pin preference and sample location are confirmed.

@elect2eng

I have done good number of projects using esp32. In this project we will get the json data and parse it to get the sun set value, compare with the local time on esp32 and switch the relay connected to the GPIO.

@hexabitzprojects

Hi, I can develop this ESP32 WeatherAPI sunset-relay controller as a clean, reliable Arduino/PlatformIO project. I have **16 years of embedded firmware experience** with ESP32, Wi-Fi, HTTP/REST APIs, JSON parsing, RTC/time synchronization and IoT automation. I’ll implement the complete flow: configurable Wi-Fi/API key/location, WeatherAPI HTTPS request, JSON parsing of the `sunset` field, Indian timezone handling, RTC comparison and relay control with a **5-minute refresh/hysteresis window** to prevent chatter. The firmware will retain the last valid sunset schedule if the API is temporarily unavailable and log communication/parsing errors clearly on Serial. I have completed **ESP32 IoT and MQTT-based automation projects**, including sensor acquisition, remote communication and actuator control, so I can keep the implementation robust while avoiding unnecessary complexity. Deliverables will include the **ready-to-compile `.ino` source, README, required libraries, API/JSON example, configurable pin/location/credentials section and testing instructions**. I’ll structure the code for ESP32 DevKit-C and keep it clean, modular and well commented. Best regards, Subhash Suman ESP32 | Embedded Firmware | IoT | Wi-Fi & APIs

@kratika0510

As an Internet of Things (IoT) specialist with in-depth experience in custom software development, I have the required skills to create a clean and well-commented Arduino sketch for your ESP32 Sunset Relay Control. I have a thorough understanding of the core flow you've outlined, from calling APIs to parsing JSON data and making GPIO control decisions based on parsed values. Having worked on similar projects which involved automating processes around local sunset times, I understand the importance of accuracy. I'll make sure that the sketch successfully performs the time comparison and energizes or de-energizes the relay at the right moment, with a five-minute refresh window to avoid any potential relay chatter. Moreover, my experience using sensors and external hardware in IoT projects gives me unique insights into optimizing operations even in complex setups. Lastly, what truly sets my team at Neuravolt apart is our comprehensive approach. We don't just deliver a working sketch; we provide complete documentation explaining all components and their usage. As your long-term technology partner, we will ensure that your project is maintainable in the future; Zukiel doesn't deliver just solutions but confidence and growth for your business as well. Let's turn this project into another success story together!

@Webslinger01

Sunset-triggered relay logic with a daily API call is exactly the kind of firmware I build — the tricky part is timezone-correct parsing and the ±30s window, and I've shipped ESP32 products doing far heavier work than this, including a solar RFID water vending machine running fully offline on ESP32 with custom firmware and state machines. Here's what I bring to this: → ESP32 firmware in C/C++ with WiFi, HTTP GET, JSON parsing and RTC-based scheduling across multiple shipped products → I've built custom PCBs and full prototypes for vending, HVAC and vending machines, so clean modular code and fail-safe logging is standard practice for me → End-to-end: firmware, PCB design, 3D enclosures and prototype shipping — though here you only need the sketch and README → I can start immediately and deliver the .ino plus README within 1 day, tested on an ESP32 DevKit-C bench setup My approach: → Confirm your WeatherAPI key, location format and relay GPIO, then wire up WiFi and the daily fetch in a separate credentials header → Bench-test the relay timing against a simulated RTC, then hand over the .ino and README with library list and JSON snippet For this scope the cost would be 5000INR, covering firmware, testing and documentation.

@soniaer987

I can do this project, I have the ESP32 with me and have integrated Weather API for the smart mirror and on another project I have developed weather station using sensors. I will just need to use RTC module for time and ESP32 that is connected to the internet. I can do it in 3000 within a day and all final along with working video will be shared

@piotrz09

Thanks for detail. I have experience in developing ESP32 automation controller. So I understand this workflow well and can get you strong result quickly. Thanks Piotr