Random_dude & CircuitChic
Hey, I’ve been messing around with a little DIY tic‑tac‑toe robot and could use a hand wiring up the sensors. Interested?
Sure thing. Start by deciding what you want to detect – a simple IR break beam for each intersection is the most reliable. Run a 5 V power line to each sensor, keep the ground common, and pull each signal line up to 3.3 V with a 10 k pull‑up. Wire the outputs to separate GPIO pins on your microcontroller, keep the trace length under an inch to avoid noise, and add a small 100 nF capacitor across each sensor’s supply pin to filter any chatter. When you’re wiring, double‑check polarity on the IR emitter; it’s a pain to swap after soldering. Once you’ve got the hardware sorted, write a simple debounce routine—5 ms is usually enough—before you start writing the AI. Happy hacking.
That sounds solid—thanks for the quick rundown. I’ll grab the parts and fire up the wiring, and hit you up if any hiccups pop up. Catch you later!
Good luck—double‑check the grounds before you hit power. Hit me up if anything weird shows up.
Thanks, will double‑check the grounds before I hit power. Will ping if anything weird pops up.
Sounds good—just keep an eye on the current draw on each sensor, and you’ll be fine. Happy building.