The Adafruit ADS1015 4-channel ADC gives your next project 12-bit precision at 3300 samples per second over 2-wire I2C. The ADC can be used as either 2 x differential or 4 x single ended channels, and it has a programmable pre-amp (up to 16x). This little breakout board has built-in noise suppression to keep the supply lines clean. It uses one of four possible I2C addresses allowing you to run 4 x boards on the same 2-wire bus. Sample code is available for Raspberry Pi or Arduino.

• Supply voltage from 2 to 5.5V
• 12-bit precision
• Programmable data rate up to 3300 samples per second
• 4 x single ended or 2 x differential channels
• Programmable gain amplifier for small signals
• Uses I2C addresses 0x48 to 0x4B, jumper selectable
• Adafruit part no. 1083

We also supply a 16-bit version 75-0564 with a lower data rate.

*Customers looking to resell on eBay or Amazon should contact Adafruit directly.

The Adafruit ADS1115 16-bit ADC is a tiny breakout board which provides 4 x ADC channels over 2-wire I2C. The chip can be configured as either 4 x single ended channels or as 2 x differential channels with at up to 860 samples per second. Small signals can be amplified up to 16 times by the built-in programmable gain amplifier. The board also features noise cancelling to keep the supply lines clean. It uses one of four possible I2C addresses allowing you to run 4 x boards on the same 2-wire bus. Sample code is available for Raspberry Pi or Arduino.

We also supply a 12-bit version 75-0562 which has a higher data rate.

• Supply voltage from 2 to 5.5V
• 16-bit precision
• Programmable data rate up to 860 samples per second
• 4 x single ended or 2 x differential channels
• Programmable gain amplifier for small signals
• Uses I2C addresses 0x48 to 0x4B, jumper selectable
• Adafruit part no. 1085

*Customers looking to resell on eBay or Amazon should contact Adafruit directly.

The Adafruit I2C-safe Logic Level Converter lets your 5V Arduino (or other microcontroller) talk to 3.3V sensors, displays and flash cards over I2C. Ordinary level shifters won't work with I2C but this bi-directional shifter from Adafruit is specifically designed to do just that. It uses 4 x BSS138 FETs with 10kΩ pull-up resistors allowing 10V on one side and as low as 1.8V on the other. Plus it also works for TTL serial, SPI (<2MHz), and any other digital serial comms. The board does slow down the I2C somewhat so you may not be able to reach the maximum I2C baud rates.

Supplied fully assembled plus 2 x 6-pin male header strips for you to solder on if your project needs them.

• Bi-directional voltage shifting for I2C
• 4 x BSS138 FETs
• Also works with TTL serial, SPI and others (with restrictions)
• Adafruit part no. 757

*Customers looking to resell on eBay or Amazon should contact Adafruit directly.