Farting Ninja teardown (Patreon)

Inside a Farting Ninja (with schematic)

This thing is hilarious. It's a toy ninja with a light sensor so that when it detects a disturbance in light levels it farts loudly. The circuitry is pretty much what you'd expect to find in these. A light detector based on a simple potential divider with a traditional LDR, and a couple of transistors to amplify the signal to the point it can trigger the sound chip. The sound chip may just be a microcontroller, and drives a miniature 8 ohm speaker directly on two pins. It seems to do so as a series of positive and negative going spikes. I ran out of time to analyse the signal further as I don't use oscilloscopes regularly enough to hone in on the data I need quickly. The brief bursts of noise and seemingly simple pulsed waveform made it hard to get an automatic lock on the full sound. I specifically avoid using intrusive mid-run video adverts, which means I don't earn as much from my content as other YouTubers. If you enjoy these videos you can help support the channel with a dollar or two for coffee, cookies and random gadgets for disassembly at:- https://www.patreon.com/bigclive Patreon supporters get early access to videos as they are made, and also regular live streams. This also keeps the channel independent of YouTube's advertising algorithms allowing it to be a bit more dangerous and naughty. #ElectronicsCreators