![]() ![]() ![]() This is a high-performance RISC CPU, 8-bit CMOS MCU, and has 8192-word flash memory, 368 bytes SRAM, 256 bytes EEPROM and 35 I/Os. It is built around PIC16F887 MCU (IC4), ESP8266 Wi-Fi module, logic-level shifter, LM35 temperature sensor (IC3), 3.3V regulator LM1117-3.3 (IC2), 5V regulator 7805 (IC1) and 16×2 LCD module (LCD1). 2: Author’s prototypeĬircuit diagram of the IoT Wi-Fi temperature-logging system is shown in Fig. 1: Block diagram of the temperature logging system Circuit and working Fig. Temperature data transmitted from the circuit board can be accessed on a smartphone or PC through Wi-Fi using ThingSpeak API. It enables you to collect, store, analyse, visualise and act on the data received from sensors or electronic circuits.īlock diagram of the temperature-logging system is shown in Fig. This application and API to store and retrieve data from things over the Internet. ThingSpeak is an open source Internet of Things project (IoT). Here is a temperature logging system based on PIC16F887 microcontroller (MCU), Wi-Fi and ThingSpeak application programming interface (API).
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