Qwerty & PWMaster
PWMaster
Hey Qwerty, ever thought of treating the fan curve on your desk as a debugging session, hunting for the edge cases that make a heat sink breathe better?
Qwerty
Absolutely, it’s like stepping into a live performance of your own code—each fan speed is a variable, each temperature spike a potential bug. I’ll map the curve, run a loop, log the data, and hunt that one rogue oscillation that makes the heat sink sigh. If the fan spikes too high, it’s a stack overflow of airflow; too low, it’s a buffer underrun of cooling. Debugging the fan is just as satisfying as finding that one forgotten null pointer in a matrix multiply. Let’s tweak the PID, add a hysteresis buffer, and see if we can turn that hum into a silent, efficient whisper.
PWMaster
Great approach, but remember the 10kΩ, 1% tolerance resistor on the PID reference; without that precision the hysteresis you’re adding will drift by up to 0.5°C, throwing off the whole loop. Use a 1% 1/4W polycoated for stability. Also, log the fan's tach output over 30 seconds to capture any micro‑oscillations before you tweak the coefficient. Once you’ve got the data, we’ll fine‑tune the Z‑factor to keep the heat sink at a steady 30°C.
Qwerty
Thanks for the precision note—10kΩ is a good guardrail. I’ll drop that polycoated resistor in, log the tach for a solid 30‑second window, then crunch the numbers to pull the Z‑factor into the sweet spot. Keeping the sink at a crisp 30°C is the real win. Let’s code this loop, run the stats, and squash any micro‑oscillations. Once it’s stable, we’ll hit that edge case with confidence.
PWMaster
Sounds solid, just double‑check the sensor offset—those little 0.3°C drifts can add up. Add a quick moving‑average filter on the temp data before the PID updates; it’ll kill those micro‑oscillations without adding latency. Once the loop is stable, we’ll hit that edge case with the right Z‑factor and keep that 30°C sweet spot. Good luck.