Looking for Pca9685? PCA9685 16-Channel 12-Bit PWM/Servo Driver I2C Interface is available at Zbotic with fast shipping across India.
Product Description
- If you’re building a robot with numerous moving parts or need to control multiple LEDs using PWM outputs, you may find the limited PWM channels on your microcontroller to be a significant hurdle. The solution is simple: use a 16-Channel 12-Bit PWM/Servo Driver.
- This driver allows you to manage 16 free-running PWM outputs with just 2 pins. Plus, you can daisy-chain up to 62 of these drivers, enabling control of a total of 992 PWM outputs.
- As an I2C-controlled PWM driver with a built-in clock, it operates independently without requiring constant signals from your microcontroller, allowing for greater flexibility in your project.
- It’s 5V compliant, so you can use it with a 3.3V microcontroller while safely driving outputs up to 6V. This is particularly useful for powering white or blue LEDs that have forward voltages of 3.4V or higher. With 6 address select pins, you can easily connect up to 62 drivers on a single I2C bus, giving you a total of 992 outputs at your disposal.
Features
- This board/chip uses I2C 7-bit address between 0x60-0x80, selectable with jumpers
- Terminal block for power input (or you can use the 0.1″ breakouts on the side)
- Reverse polarity protection on the terminal block input
- Green power-good LED
- 3 pin connectors in groups of 4 so you can plug in 16 servos at once (Servo plugs are slightly wider than 0.1″ so you can only stack 4 next to each other on 0.1″ header
- “Chain-able” design
- A spot to place a big capacitor on the V+ line (in case you need it)
- 220 ohm series resistors on all the output lines to protect them, and to make driving LEDs trivial
- Solder jumpers for the 6 address select pins
- i2c-controlled PWM driver with a built in clock. Unlike the TLC5940 family, you do not need to continuously send it signal tying up your microcontroller, its completely free running!
- It is 5V compliant, which means you can control it from a 3.3V microcontroller and still safely drive up to 6V outputs (this is good for when you want to control white or blue LEDs with 3.4+ forward voltages)
- 6 address select pins so you can wire up to 62 of these on a single i2c bus, a total of 992 outputs – that’s a lot of servos or LEDs
- Adjustable frequency PWM up to about 1.6 KHz
- 12-bit resolution for each output – for servos, that means about 4us resolution at 60Hz update rate
- Configurable push-pull or open-drain output
- Output enable pin to quickly disable all the outputs
Specifications:
| Driver IC | PCA9685 |
|---|---|
| Length (mm): | 62 |
| Width (mm): | 25 |
| Height (mm): | 15 |
| Weight (g): | 10 |
Package Includes
- 1 x PCA9685 16-Channel 12-Bit PWM/Servo Driver I2C Interface
PCA9685 16-Channel 12-Bit PWM/Servo Driver I2C Interface Overview
The PCA9685 16-Channel 12-Bit PWM/Servo Driver is an I²C-controlled board that provides 16 independent PWM outputs ideal for driving servos, LEDs or small motors. It operates with a built-in clock, freeing up your microcontroller’s PWM pins and enabling precise timing up to 1.6 kHz.
Key Features of PCA9685 16-Channel 12-Bit PWM/Servo Driver I2C Interface
- 16 independent PWM outputs with 12-bit resolution (4096 steps)
- Adjustable PWM frequency up to approximately 1.6 kHz for smooth motion control
- Configurable push-pull or open-drain output modes
- Output ENABLE pin for immediate disabling of all channels
- Terminal block power input with reverse polarity protection
- Green power-good LED indicator and fast shipping from Zbotic
Applications and Use Cases
- Driving multiple hobby servos in robotic arms or walking robots
- PWM dimming of LED strips for lighting effects or displays
- Controlling small DC motors or actuators in automation projects
- Daisy-chaining boards to expand PWM outputs for large LED matrices
- Adding extra PWM channels to microcontrollers with limited outputs
How to Use PCA9685 16-Channel 12-Bit PWM/Servo Driver I2C Interface
Connect VCC and GND on the terminal block to your power source, then wire SDA and SCL pins to your microcontroller’s I²C bus. Set the board’s I²C address via the address pins, enable outputs using the OE pin, and program the PWM duty cycle and frequency by writing to the PCA9685 registers over I²C. Open-source libraries are available to streamline initialization and channel control.
Why Buy from Zbotic?
- Genuine Products: All items sourced from authorized distributors
- Fast Shipping: Orders ship within 24 hours with tracking (non backordered products)
- Free Shipping: Free delivery on qualifying orders
- COD Available: Cash on Delivery, UPI, cards, net banking
- Technical Support: Expert help for setup and troubleshooting
- Easy Returns: Hassle-free replacement for defective products
Frequently Asked Questions
How many PCA9685 boards can be daisy-chained on one I²C bus?
You can connect up to 62 PCA9685 driver boards on the same I²C bus, providing control of up to 992 PWM channels.
What voltage should I use for the power input?
Supply the terminal block with a suitable voltage for your servos or LEDs, typically 5–6 V. The board’s reverse polarity protection guards against wiring mistakes.
Can this board handle the current draw of multiple servos?
The PCA9685 outputs only PWM signals and does not supply servo power directly. Use an external power source rated for your servos’ combined current, wired through the terminal block.
BLDC Motor Controller Programming: Six-Step Commutation Guide
Table of ContentsIntroduction to BLDC Motor ControlBLDC vs Brushed Motors: Why It MattersSix-Step (Trapezoidal) Commutation TheoryHall Effect Sensors:...
Read More →
12V Servo Motor for Heavy Robotics: DS3225 & DS5160 Guide
Standard hobby servos — the SG90s and MG996Rs that fill every Arduino starter kit — operate on 4.8–6...
Read More →
High Torque Servo Motors for Robotics: MG996R to DS3225
Servo motors are the muscles of modern robots. Whether you are building a robotic arm, a hexapod walker,...
Read More →Technical Specifications
| Model | PCA9685 |
|---|---|
| Interface / Protocol | I2C |
| SKU | AI0285 |
| Weight | 0.01 kg |
| Availability | In Stock |
Applications & Use Cases
The PCA9685 16-Channel 12-Bit PWM/Servo Driver I2C Interface is a versatile servo motor driver used across a wide range of applications including electronics projects, DIY builds, prototyping, and educational experiments.
Common use cases:
- Integrating into a custom electronics project
- Learning and experimenting with circuits
- Replacing or upgrading components in existing setups
This product is ideal for electronics enthusiasts, engineers, and students.
Technical Tip: Always verify voltage and current requirements before connecting to your circuit. Check datasheets for detailed specifications and pin configurations.
Shipping & Delivery
- Free shipping on orders above ₹999 across India
- Dispatched within 1-3 business days
- Expected delivery: 3-7 business days depending on location
- Secure packaging to ensure safe transit of electronic components
Vishal Yadav (verified owner) –
This PCA9685 16-Channel 12-Bit PWM/Servo Driver I2C runs very smoothly. Using it in my CNC project, very reliable.
Pooja Desai –
Good quality PCA9685 16-Channel 12-Bit PWM/Servo Driver I2C. Minor vibration at high speed but acceptable for my project.
Ayush Mehta –
Superb PCA9685 16-Channel 12-Bit PWM/Servo Driver I2C! Torque is exactly as specified. My project runs perfectly with this.
Prateek Negi (verified owner) –
Perfect PCA9685 16-Channel 12-Bit PWM/Servo Driver I2C for my automation project. Speed control works beautifully.
Anonymous (verified owner) –
Nice Product
Anonymous (verified owner) –
good price and good product
Ojas Dhawan (verified owner) –
Love this PCA9685 16-Channel 12-Bit PWM/Servo Driver I2C. Silent operation and consistent speed. Worth every rupee.
Nikita Pandey (verified owner) –
Decent PCA9685 16-Channel 12-Bit PWM/Servo Driver I2C. Works as expected. Shaft length is adequate for most applications.
Urmi Kumar (verified owner) –
Nice PCA9685 16-Channel 12-Bit PWM/Servo Driver I2C. Torque is decent. Mounting was easy. Good value for money.
Akash Batra (verified owner) –
Great PCA9685 16-Channel 12-Bit PWM/Servo Driver I2C. Mounting holes are accurate and the shaft fits perfectly with my coupling.
Tanya Nair (verified owner) –
Bought 4 of these for my robot. All working identically. Excellent consistency.
Kunal Chatterjee (verified owner) –
Okay PCA9685 16-Channel 12-Bit PWM/Servo Driver I2C. Noisy at higher speeds but functional for basic applications.
Riya Reddy –
Decent PCA9685 16-Channel 12-Bit PWM/Servo Driver I2C. Works as expected. Shaft length is adequate for most applications.
Sneha Khanna (verified owner) –
Love this PCA9685 16-Channel 12-Bit PWM/Servo Driver I2C. Silent operation and consistent speed. Worth every rupee.
Parth Choudhury (verified owner) –
Bought 4 of these for my robot. All working identically. Excellent consistency.
Divyansh Verma (verified owner) –
Decent PCA9685 16-Channel 12-Bit PWM/Servo Driver I2C. Works as expected. Shaft length is adequate for most applications.
Dev Kapoor (verified owner) –
Superb PCA9685 16-Channel 12-Bit PWM/Servo Driver I2C! Torque is exactly as specified. My project runs perfectly with this.
Sarthak Vyas (verified owner) –
This PCA9685 16-Channel 12-Bit PWM/Servo Driver I2C exceeded expectations. RPM is as advertised, very smooth operation.
Mohit Menon (verified owner) –
Pretty good PCA9685 16-Channel 12-Bit PWM/Servo Driver I2C. Using it in my conveyor project. Performs reliably.
Aman Deshpande (verified owner) –
Love this PCA9685 16-Channel 12-Bit PWM/Servo Driver I2C. Silent operation and consistent speed. Worth every rupee.
Tushar Mehta (verified owner) –
Decent PCA9685 16-Channel 12-Bit PWM/Servo Driver I2C. Works as expected. Shaft length is adequate for most applications.
Om Trivedi (verified owner) –
Excellent PCA9685 16-Channel 12-Bit PWM/Servo Driver I2C! Smooth rotation and good torque. Perfect for my robot.
Tejas Saini (verified owner) –
This PCA9685 16-Channel 12-Bit PWM/Servo Driver I2C is ideal for precision applications. Very happy with the purchase.
Shubham Rajan –
This PCA9685 16-Channel 12-Bit PWM/Servo Driver I2C exceeded expectations. RPM is as advertised, very smooth operation.
Aditi Banerjee (verified owner) –
Perfect PCA9685 16-Channel 12-Bit PWM/Servo Driver I2C for my automation project. Speed control works beautifully.
Chinmay Yenumula (verified owner) –
Good
Om Tiwari (verified owner) –
Decent PCA9685 16-Channel 12-Bit PWM/Servo Driver I2C. Works as expected. Shaft length is adequate for most applications.