GY-68 BMP180 Barometric Pressure Sensor Module for Arduino & IoT
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GY-68 BMP180 Digital Barometric Pressure Sensor Module with I2C Interface
The GY-68 module features the BMP180 digital barometric pressure sensor from Bosch, delivering accurate pressure and temperature readings over an I2C interface. It is widely used in weather stations, altitude measurement, and drone height control. The on-board regulator and level shifter allow safe use with 3.3V and 5V microcontrollers.
Key Specifications
| Specification | Value |
|---|---|
| Sensor | BMP180 |
| Pressure Range | 300–1100 hPa |
| Absolute Accuracy | ±1 hPa (0.1 m altitude) |
| Temperature Range | -40 to +85°C |
| Interface | I2C (up to 3.4 MHz) |
| Supply Voltage | 3.3V–5V (on-board regulator) |
What You Can Build With This
- DIY weather station with humidity and rain sensor
- Altimeter for drones or rockets
- Indoor climate monitor with LCD display
- IoT based atmospheric pressure tracker using ESP8266
Compatibility
Works with Arduino Uno, Nano, Mega, ESP8266, ESP32, and Raspberry Pi. The I2C lines operate at 3.3V logic; the built-in regulator handles 5V supply. For direct 5V I2C connections, use a level shifter.
Wiring Notes
Connect VCC to 3.3V or 5V, GND to ground, SDA to A4 (Uno) or D2 (ESP), SCL to A5 or D1. The module includes pull-up resistors, so no external ones are needed. Avoid bending the sensor to prevent offset errors.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-7 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino?
Yes, the GY-68 works with Arduino boards using the Wire library. It operates at 3.3V logic, so for 5V boards connect directly to I2C pins which are often 5V tolerant on many Arduino models.
Can I measure altitude with this sensor?
Yes, the BMP180 provides pressure readings that can be converted to altitude using standard formulas. It achieves an accuracy of about 0.1 meters under ideal conditions.
Does this module work with 5V logic directly?
The module has a 3.3V regulator and the sensor communicates at 3.3V. The I2C lines are not 5V tolerant on all versions; we recommend using a logic level converter or ensuring your board has 5V tolerant I2C pins.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
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Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 3-7 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items