Ever tried drying your own herbs and thought, “There’s got to be a smarter way to do this”? Yeah, me too.
The “Why” Behind the Automation
I got tired of checking the oven every 20 minutes. My rosemary either ended up crispy like burnt paper or too soggy to store. So I turned to code—yup, good ol’ Python—to make my DIY herb-drying setup smarter. Let me show you how.
1. Temperature Monitoring with a Sensor Script
First, I used a DHT22 sensor to monitor real-time oven temperature.
import Adafruit_DHT
sensor = Adafruit_DHT.DHT22
pin = 4
humidity, temperature = Adafruit_DHT.read_retry(sensor, pin)
print(f"Temp: {temperature} C, Humidity: {humidity}%")
2. Automate Your Dehydrator's Power Cycle
Relay modules can help control your dehydrator via GPIO pins.
import RPi.GPIO as GPIO
import time
GPIO.setmode(GPIO.BCM)
GPIO.setup(17, GPIO.OUT)
# Turn on for 10 minutes
GPIO.output(17, GPIO.HIGH)
time.sleep(600)
GPIO.output(17, GPIO.LOW)
3. SMS Alerts When Herbs Are Ready
Twilio to the rescue.
from twilio.rest import Client
client = Client("ACCOUNT_SID", "AUTH_TOKEN")
client.messages.create(
to="+1234567890",
from_="+1987654321",
body="Hey! Your herbs are crispy and ready"
)
4. Moisture Level Logging to CSV
Track drying efficiency over time.
import csv
from datetime import datetime
with open("moisture_log.csv", "a") as f:
writer = csv.writer(f)
writer.writerow([datetime.now(), temperature, humidity])
5. Graph It Up with Matplotlib
Visualizing helps tweak your drying schedule.
import matplotlib.pyplot as plt
times = ["10am", "11am", "12pm"]
temps = [45, 50, 60]
plt.plot(times, temps)
plt.title("Drying Curve")
plt.xlabel("Time")
plt.ylabel("Temperature (°C)")
plt.show()
Other Useful Tools I Stumbled Upon
I also found folks experimenting with things like RFID tagging and Arduino-controlled fan speeds. It’s like a mini-lab in your kitchen.
By the way, in some herbalism circles—especially those that practice spiritual methods like Santeria en Addison or Lectura de cartas en Addison there’s a whole layer of meaning around when and how you dry herbs. They say timing can affect the energy of what you’re making.
So yeah, even something as seemingly mundane as drying mint might have mystical weight depending on who you ask. Like someone once told me while reading my Amarres de amor en Addison “Everything in your kitchen holds energy.” Not sure I buy it all, but it stuck with me.
The Juicy Bits—Why Bother?
- You get consistent results—no more basil that tastes like hay.
- It's hands-off, so you can do other stuff.
- You can log and analyze to improve over time.
- It’s fun as heck to say you automated drying herbs.
- You’ll learn Python in a super practical way.
Give It a Shot
Try just one of these scripts. You don’t need a lab coat or a PhD. Just a Pi, some patience, and a few fragrant leaves. Trust me, your tea shelf will thank you.

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