Pimoroni Ads1015 +/-24V Adc Breakout
Pimoroni Ads1015 +/-24V Adc Breakout
Pimoroni Ads1015 +/-24V Adc Breakout
The Pimoroni Ads1015 +/-24V ADC Breakout is a precision analog-to-digital converter module that extends the input measurement range of single-board computers and microcontrollers to accommodate industrial-grade voltage signals up to plus or minus 24 volts. Electronics engineers, IoT developers, and industrial automation specialists use this module to interface legacy analog sensors, process control systems, and power monitoring circuits with modern digital platforms like Raspberry Pi and Arduino. This breakout solves the critical problem of safely measuring high-voltage analog signals without requiring complex voltage divider networks or expensive isolation circuits.
Product Overview
The Ads1015 is a 12-bit successive approximation analog-to-digital converter with a programmable gain amplifier (PGA) that delivers four single-ended or two differential input channels. The module operates on I2C communication protocol, requiring only two wires (SDA and SCL) for complete control and data acquisition. The onboard voltage regulation and protection circuitry allow direct measurement of signals ranging from negative 24 volts to positive 24 volts, making it exceptionally versatile for industrial measurement applications where sensor outputs exceed standard microcontroller input limits of 3.3V or 5V.
Pimoroni has engineered this breakout with precision resistor networks and operational amplifier conditioning to ensure accurate signal acquisition across the entire measurement range. The PGA allows software-selectable gain settings (1x, 2x, 4x, or 8x), enabling users to optimize resolution for their specific signal amplitude. With a maximum sampling rate of 3.3 kSPS and integrated comparator functionality, the Ads1015 provides real-time analog monitoring capabilities essential for battery management systems, solar inverter monitoring, industrial process control, and precision measurement instrumentation.
Key Specifications
| Specification | Details |
| Product Type | 12-bit ADC Breakout Module with Programmable Gain Amplifier |
| Brand | Pimoroni |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
| Input Voltage Range | +/- 24 Volts (configurable with PGA) |
| ADC Resolution | 12-bit (4096 levels) |
| Communication Interface | I2C (400 kHz standard, 3.4 MHz fast mode) |
| Maximum Sampling Rate | 3.3 kSPS (kilosamples per second) |
| Programmable Gain | 1x, 2x, 4x, 8x selectable via software |
| Input Channels | 4 single-ended or 2 differential |
| Operating Voltage | 3.3V to 5V logic supply |
| PCB Dimensions | Compact breakout form factor with standard 0.1-inch headers |
Key Features
- Extended Measurement Range: Safely measures analog signals from negative 24V to positive 24V without external voltage dividers, enabling direct connection to industrial sensors and power circuits
- Programmable Gain Amplifier: Software-selectable gain settings (1x, 2x, 4x, 8x) optimize resolution for different signal amplitudes, improving measurement accuracy across varying sensor outputs
- I2C Digital Interface: Two-wire communication protocol simplifies integration with Raspberry Pi, Arduino, and other microcontrollers, requiring minimal wiring and GPIO pins
- 12-bit Resolution: Provides 4096 discrete measurement levels with 3.3 kSPS sampling rate, delivering sufficient precision for industrial monitoring and control applications
- Flexible Input Configuration: Supports both single-ended measurements from four independent channels or differential measurements for noise rejection in harsh industrial environments
- Onboard Protection: Integrated voltage regulation and input protection circuitry safeguard against overvoltage conditions and transient spikes common in industrial settings
Applications and Use Cases
- Battery Management Systems: Monitor multi-cell battery pack voltages, cell balancing circuits, and charge controller outputs in renewable energy systems where individual cell voltages exceed 5V
- Solar Inverter Monitoring: Measure DC bus voltages, string currents via shunt resistors, and grid synchronization signals in photovoltaic systems operating at 24V, 48V, or 96V nominal levels
- Industrial Process Control: Interface with analog transmitters, pressure transducers, and temperature sensors in manufacturing environments requiring precise measurement of 4-20mA signals converted to voltage
- Power Supply Testing: Characterize voltage regulation, load transient response, and efficiency of industrial power supplies by simultaneously measuring input and output voltages without expensive isolation probes
- Electric Vehicle Charging: Monitor high-voltage battery pack characteristics, charging currents, and thermal management system voltages in EV charging infrastructure and battery management electronics
- Data Acquisition Systems: Build portable measurement instruments for field testing, equipment diagnostics, and performance validation where multiple high-voltage analog channels require simultaneous sampling
How to Use
Connect the Pimoroni Ads1015 to your microcontroller via I2C by wiring the SDA pin to your controller's SDA line, SCL to SCL, and providing 3.3V or 5V power from your logic supply. The module's I2C address is configurable via the ADDR pin, allowing up to four modules on a single I2C bus for expanded channel capacity. Install the Pimoroni Python library or use standard I2C commands to initialize the module, configure the programmable gain amplifier for your signal range, and select your desired input channels (single-ended or differential mode).
For voltage measurements, connect your analog signal to the selected input channel, ensuring the signal stays within the configured measurement range. The module automatically handles analog-to-digital conversion and returns 12-bit digital values via I2C. Use the gain setting to optimize resolution: select 8x gain for small signals (0-3V range), 1x gain for full-scale measurements (0-24V range), or intermediate settings for signals between these extremes. Implement software filtering or averaging of multiple samples to reduce noise from switching power supplies or high-frequency industrial equipment. Always verify signal polarity and magnitude before connecting to avoid exceeding the absolute maximum ratings of the input protection circuitry.
Frequently Asked Questions
Can the Ads1015 measure negative voltages directly?
Yes, the Ads1015 with Pimoroni's +/-24V configuration can measure both positive and negative voltages directly. The module includes biasing and conditioning circuitry that allows true bipolar measurement without requiring external reference circuits. This is particularly useful for measuring AC-coupled signals, battery discharge currents, and differential sensor outputs where the signal crosses zero.
What is the difference between single-ended and differential input modes?
Single-ended mode measures voltage relative to ground, using all four input channels independently. Differential mode measures the voltage difference between two channels, providing superior noise rejection in industrial environments with high electromagnetic interference. Differential mode is ideal for measuring small signals in the presence of large common-mode noise, such as current sensing via shunt resistors in high-power circuits.
How do I select the correct programmable gain setting for my application?
Choose gain based on your maximum expected signal amplitude: use 8x gain if signals are 0-3V, 4x for 0-6V, 2x for 0-12V, and 1x for 0-24V signals. Higher gain improves resolution for smaller signals but reduces the maximum measurable voltage. For variable signal ranges, implement software gain switching to maintain optimal resolution across different operating conditions.
Can I use the Ads1015 with Arduino and Raspberry Pi simultaneously?
Yes, the I2C interface allows connection to any microcontroller platform supporting I2C communication. You can even connect multiple microcontrollers to the same Ads1015 module on a shared I2C bus, though only one device should initiate reads at a time to avoid conflicts. Configure different I2C addresses if using multiple Ads1015 modules on the same bus.
What protection does the module provide against overvoltage?
The Ads1015 includes integrated input protection circuitry that clamps voltages exceeding the supply rails, preventing damage to the ADC die. However, this protection is not unlimited. Voltages significantly exceeding the +/-24V specification or rapid transients may still cause permanent damage. Use external series resistors or TVS diodes for additional protection in harsh industrial environments with frequent voltage spikes.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
Why Buy from The Tech Depot
- Genuine Products: Sourced directly from authorized distributors with authentication
- Expert Team: Our technical team validates every product before listing
- Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
- Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
- Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
- Technical Support: 24/7 expert guidance via email and WhatsApp
- Returns: 7-day return policy on manufacturing defects only
Buy Pimoroni Ads1015 +/-24V Adc Breakout Online in India
Purchase the Pimoroni Ads1015 +/-24V Adc Breakout online at The Tech Depot, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on Pimoroni Ads1015 +/-24V Adc Breakout