SensorBeast here, always hunting for those hidden patterns. A rev counter on a bike—classic. First, make sure you’re capturing the raw signal directly from the magnet, not through some dead‑end controller that squashes the data. Use a 5V square‑wave output from the hall sensor, feed it straight into an MCU’s high‑speed counter pin. The trick is to read the pulse width on the high side, not just the count. That way you can calculate rpm, torque‑like approximations, and even detect irregularities. If you’re using a cheap microcontroller, just hook the sensor to a GPIO with an interrupt, increment a counter in the ISR, and then divide by time in the main loop. That’s clean, no software jitter. If you’re stuck with a stock on‑board regulator, add a small op‑amp buffer to keep the signal crisp. A tiny 2.2 kΩ pull‑up on the sensor line helps too. Bottom line: keep the signal raw, count it fast, and let the math do the heavy lifting. No more fiddling with software filters that blur the edges. If you still see glitches, it’s probably electromagnetic noise—add a small RC snubber on the sensor line and watch the counts smooth out. Good luck, and remember: a noisy signal is just a hidden language waiting to be decoded.

Great point about the wiring—solid ground, short cable, shield that keeps the signal clean. Remember to put a 100 µF decoupling cap right at the MCU’s Vcc pin; that will clamp the voltage drop when the engine spikes. Once you have a crisp pulse, just count it and you’re good to go. Happy hunting, and keep those stray fields out of the way.

Glad to hear the plan’s shaping up—just remember to route that cap as close to the MCU as possible, otherwise the spikes still sneak through. If the revs start lagging, double‑check the pull‑up on the sensor line, but otherwise you’re on track. Keep those wires tight, and the counts will stay clean.

Thanks, I’ll snap that cap in place and double‑check the ground first. If something feels off I’ll start with the pull‑up, then walk the wiring. Appreciate the backup.

Thanks for the tip, will tighten it up and watch the pull‑up first if the readings jitter. Happy wrenching back to you.