Yet another ultrasonic sensor bracket, but this time for the ubiquitous BYJ48 stepper, and in standing position which might reduce fake echoes in indoor conditions. Haven't proven yet. I have three different version of the HC-SR04 sensor, 2 of them fit, the third doesn't. If yours doesn't fit either, let me know, or feel free to modify it yourself.20% honeycomb infill (maybe even less), 2 top and bottom layers, and 2 perimeters will do.