How to Run a 5V Device On a 3.3V System With Qwiic
Christo-boots with the-pher, santaimpersonator Introduction
The SparkFun Qwiic AP3012K 5V Boost converts the logic-level and boost the voltage or power supply of the Qwiic connect system from 3.3V, to 5V on its PTH pins. This is handy for connecting any I2C device that requires a higher supply voltage, such as super bright LEDs or mechanisms like a DC fan on our air quality sensors. On the board, we also provide 3V3/5V jumpers, which can be used to configure the logic-levels of the I2C PTH pins. Therefore, this board can be utilized to connect an I2C device that requires any combination of 3.3V/5V for its power and/or signals.
The boost circuit on this board is rated to source up to a 100mA at 5V output, with 90% efficiency. However, users should note that this limitation is not only dependent on the load being connected, but also the amount of current that is being sourced to the Qwiic connector system.
Attention: Soldering is required for this board.
In this guide we'll cover the hardware and how to utilize the Qwiic 5V Boost with the Sensirion SEN55 Sensor (but you can use the SEN54 or SPS30, instead). To follow along with this tutorial, users will need the following items:
- Thing Plus Development Board
- We recommend either the ESP32 Thing Plus or the RP2350 Thing Plus.
- SparkFun Qwiic 5V Boost - AP3012K
- SparkFun Qwiic Cable Kit
- Sensirion SEN55 - Particle, VOC, NOx, Humidity, and Temperature Sensor
- Soldering tools
- Headers and jumper Wire
- USB cable
Attention: Again, soldering is required for this board.
Tip: The Sensirion SEN55 Sensor requires an extra GND connection to enable the I2C interface.
Note: The These other Sensirion particulate matter sensors, may also be used in place of the SEN55:
Topics
This guide contains two main sections: Hardware Assembly and Quickstart Guide sub-sections.
- The Hardware Assembly section provides instructions to utilize this product with the Sensirion SEN55 Sensor.
- The Project Setup covers the basic hardware information and assembly instructions users would need to get started with this product.
If you are looking for the full Hookup Guide for the SparkFun Qwiic 5V Boost - AP3012K, click the button bellow. This basic tutorial only covers utilizing this Qwiic AP3012K 5V Boost to attach a SEN55 sensor to our Qwiic connect system.