HCSR04 5V to 3.3V Converter

thingiverse

This nifty box lets you connect a HCSR04 distance sensor to your Raspberry Pi's GPIO pins without any soldering required. Since no soldering skills are necessary, it's perfect for classroom introductions. * Why do you need this adapter? - The Raspberry Pi has .3V GPIO, and the HCSR04 requires 5V. - If you want to connect a HCSR04 sensor to your Raspberry Pi, you'll need to add two resistors to split the voltage. A 1K resistor and a 2K resistor are needed. This adapter provides an easy way to achieve this without soldering anything. * What you will need - A female-female Dupont cable with four-pin connectors. - Three screws (refer to the photo of the reference for the correct screws). - One 1K resistor. - One 2K resistor. - The STL parts, which include three Block.stl files. * How to make it: - Prepare the resistors as shown in the first photo. - Use the box, screws, and block to secure the resistors (by screwing the little block onto the wires). * How to connect it - Connect the Dupont cable sensor side to the HCSR04. - Connect the board-side cables to your Raspberry Pi. - Check my recommended SONAR allocation for PI pins. You can find this in two PowerPoint slides. I use a 4-pin female-female Dupont cable where I reorder the wires to match each slot. * How to test it - You can find many Python examples to test HCSR04 devices on GitHub. This is part of a larger project that I've been working on for over a year now, and it's finally nearing completion! Follow me to stay up-to-date.