ADS1115 16-bit ADC Module
External high-resolution ADC for analog sensors and data logging.
AI Ready Overview
Quick Summary
ADS1115 is a adc module commonly used in FYP and embedded projects. It is best for precision analog readings and extra adc channels, with wiring and testing planned around Arduino, ESP32, Raspberry Pi.
Difficulty
Intermediate
Time Required
1-2 weeks for wiring, basic code, platform integration and repeated test readings
Cost
RM10-RM28 module range in Malaysia; full project cost depends on scope.
Components
ADS1115, Arduino, ESP32, Raspberry Pi
Overview
What is ADS1115?
ADS1115 is a 16-bit I2C analog-to-digital converter. It is useful when a project needs better analog resolution or extra analog inputs than the controller provides.
Engineering Reference
Quick Specs
| Operating Voltage | 3.3V / 5V |
|---|---|
| Interface | I2C, Analog input |
| Difficulty | Intermediate |
| Typical Malaysia Price | RM10-RM28 |
| Best For | Precision analog readings, Extra ADC channels |
Real Usage Notes
Suitable / Not Suitable
Suitable for
- ✓ Precision analog readings
- ✓ Extra ADC channels
- ✓ Sensor data logging
Not suitable for
- ✕ Fast oscilloscope-style sampling
- ✕ High-voltage direct measurement
- ✕ No calibration projects
Build Planning
Difficulty
ADS1115 is rated Intermediate. Plan around 1-2 weeks for wiring, basic code, platform integration and repeated test readingsdepending on wiring, libraries, calibration, dashboard/app integration and testing evidence.
Build Planning
Time Required
1-2 weeks for wiring, basic code, platform integration and repeated test readings
Malaysia Price Guidance
Cost
Typical module price range: RM10-RM28. This is component guidance only; a complete FYP cost depends on controller, sensors, casing, display, app/dashboard, documentation and timeline.
Connections
Pinout
VCC
Power input. Check whether the module expects 3.3V or 5V before wiring.
GND
Common ground with the controller and external supply.
I2C
Main I2C connection used by the module.
IO
Additional signal pins depend on the exact module variant.
Platform Notes
Wiring Guides
ADS1115 with Arduino / ESP32
Connect power, ground and the I2C / Analog input signal lines. Use level shifting when a 5V module connects to a 3.3V controller.
| ADS1115 VCC | 5V or module-rated supply |
|---|---|
| ADS1115 GND | Controller GND |
| Signal pins | I2C, Analog input |
Fix Common Problems
Troubleshooting
Troubleshooting
Common Mistakes
FYP Ideas Using ADS1115
Related Projects
Compare Options
Alternative Components
Student Questions
FAQ
Is ADS1115 good for FYP projects?
Yes, ADS1115 is suitable for FYP work when the project matches its limits: Precision analog readings and Extra ADC channels.
What is the most common ADS1115 mistake?
Measuring voltage above VDD