Hackaday4 年
slide whistle
Slide whistles need two things — air coming in from the top, and actuation at the business end. The blowing force now comes from a focused fan like the ones that cool your printed plastic as ...
Hackaday4 年
Self-Playing Whistle While You Work From Home
Slide whistles need two things — air coming in from the top, and actuation at the business end. The blowing force now comes from a focused fan like the ones that cool your printed plastic as ...