Rizky, Muhammad Eka (2026) Implementasi Iot Menggunakan Blynk App Pada Prototype Rotary Coffee Roaster Berbasis Panel Surya Dengan Heater Sebagai Sumber Pemanas. Undergraduate thesis, Politeknik Negeri Jember.
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Abstract
Small-scale coffee roasting is still largely done manually, making it difficult to monitor in real time and prone to inconsistency. This research implements an IoT system on a solar-powered Rotary Coffee Roaster prototype, using a Heater as the heat source. An ESP32 microcontroller is integrated with MAX6675, INA219, and PZEM-004T sensors, along with a DC motor actuator and Heater controlled via relay and SSR, monitored through the Blynk application. The results show that the system was successfully implemented with real-time data acquisition and control, a motor response time under one second, and responsive Heater control. Accuracy testing showed that PZEM-004T was the most accurate sensor (average error for voltage, current, and power: 0.501%, 2.821%, and 2.305%, respectively), followed by the MAX6675 Thermocouple sensor with an average error of 1.97% for Heater temperature measurement and 2.42% for drum temperature measurement, while INA219 showed the highest error in current and power readings (8.870% and 8.813%) due to the measurement resolution limitations at low current scales. Overall, the system functioned well, with sensor accuracy varying depending on the parameter and measurement point
| Item Type: | Thesis (Undergraduate) | ||||||
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| Uncontrolled Keywords: | IoT, Blynk, ESP32, Rotary Coffee Roaster, Panel Surya, Monitoring. | ||||||
| Subjects: | 410 - Rumpun Ilmu Teknik > 430 - Ilmu Keteknikan Industri > 443 - Teknik Enerji 410 - Rumpun Ilmu Teknik > 450 - Teknik Elektro dan Informatika > 454 - Teknik Elektronika |
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| Divisions: | Jurusan Teknik > Prodi D4 Teknik Energi Terbarukan > Tugas Akhir | ||||||
| Depositing User: | Muhammad Eka Rizky | ||||||
| Date Deposited: | 05 Aug 2026 04:11 | ||||||
| Last Modified: | 05 Aug 2026 04:12 | ||||||
| URI: | https://sipora.polije.ac.id/id/eprint/59201 |
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