PyroNode is an open-source ESP32-based control system designed to manage multiple outputs, monitor temperature, and provide robust control over external devices. Originally built for automotive applications as a cost-effective alternative to a PMU (Power Management Unit) or aftermarket ECU, PyroNode has proven its versatility and can be adapted for various other projects, such as home automation or even controlling a coffee roaster.
- ESP32-based system: Powerful microcontroller with Wi-Fi and Bluetooth capabilities.
- 8 MOSFET-controlled outputs: Manage and control up to 8 high-power circuits.
- Overload protection: Ensures safety and reliability in high-power environments.
- Temperature monitoring: Supports 2 thermocouples via MAX6675K and other temperature sensors like MAX31855EASA.
- Waterproof connectors: Ideal for harsh environments such as automotive, outdoor, or industrial applications.
- Optoisolated inputs: Protects the system from electrical noise and interference.
- Modular MOSFET satellites: Easy expansion and replacement of MOSFET modules.
- Flexible usage: Designed initially for automotive use but adaptable to many applications, including industrial controls, environmental monitoring, or DIY home projects.
While PyroNode was initially created for controlling circuits in an automotive environment (like a PMU without the expense of aftermarket systems), it can be utilized in a wide range of other scenarios:
- Automotive: Act as a PMU to control different car subsystems.
- Home automation: Manage lighting, HVAC, or any other electronic devices.
- Coffee roasting: Use the temperature sensors and output controls to monitor and adjust a coffee roaster in real-time.
- Industrial automation: Control machines and monitor temperature in industrial settings.
- Smart gardening: Automate watering systems and monitor environmental conditions.
- MOSFET Modules: Utilize PSMN013-30MLC MOSFETs for high-efficiency switching and control of the 8 output channels.
- Power Supply: Uses an LD1085D2T33 voltage regulator to provide a stable 3.3V power supply.
- Temperature Monitoring: Equipped with 2 thermocouples via MAX6675K for accurate temperature measurements, expandable with additional sensors like the MAX31855EASA.
- Waterproof Connectors: For safe usage in outdoor or automotive applications.
- Optoisolation: Provides electrical isolation to protect the ESP32 from spikes or noise in the connected circuits.
- Modular Design: MOSFET satellite modules can be easily expanded or swapped for different configurations.
The software is built using the Arduino IDE for the ESP32 platform. A basic example of controlling the MOSFETs is included in the main.cpp file. The example alternates turning on and off the 8 MOSFET outputs with a delay of 1 second.
#include <Arduino.h>
int MOSFET0_PIN = 13;
int MOSFET1_PIN = 14;
int MOSFET2_PIN = 27;
int MOSFET3_PIN = 26;
int MOSFET4_PIN = 25;
int MOSFET5_PIN = 21;
int MOSFET6_PIN = 22;
int MOSFET7_PIN = 23;
void setup() {
pinMode(MOSFET0_PIN, OUTPUT);
pinMode(MOSFET1_PIN, OUTPUT);
pinMode(MOSFET2_PIN, OUTPUT);
pinMode(MOSFET3_PIN, OUTPUT);
pinMode(MOSFET4_PIN, OUTPUT);
pinMode(MOSFET5_PIN, OUTPUT);
pinMode(MOSFET6_PIN, OUTPUT);
pinMode(MOSFET7_PIN, OUTPUT);
}
void loop() {
digitalWrite(MOSFET0_PIN, HIGH);
digitalWrite(MOSFET1_PIN, HIGH);
digitalWrite(MOSFET2_PIN, HIGH);
digitalWrite(MOSFET3_PIN, HIGH);
digitalWrite(MOSFET4_PIN, HIGH);
digitalWrite(MOSFET5_PIN, HIGH);
digitalWrite(MOSFET6_PIN, HIGH);
digitalWrite(MOSFET7_PIN, HIGH);
delay(1000);
digitalWrite(MOSFET0_PIN, LOW);
digitalWrite(MOSFET1_PIN, LOW);
digitalWrite(MOSFET2_PIN, LOW);
digitalWrite(MOSFET3_PIN, LOW);
digitalWrite(MOSFET4_PIN, LOW);
digitalWrite(MOSFET5_PIN, LOW);
digitalWrite(MOSFET6_PIN, LOW);
digitalWrite(MOSFET7_PIN, LOW);
delay(1000);
}
This project is licensed under the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license.
- Free for personal and non-commercial use.
- Credits: Build by Jose Zuniga Marin.
- For commercial use, please contact [email protected].
You can read the full license here.