The Herbal Cube
Egzoset said:Perhaps future vaporizers will have a two-stages heating process, with a crude pre-heater combined to an acurate precision heater...
i guess that's basically what i do in my algorithm. at start up, the PID just dumps maximum current until the setpoint error is about the amount of expected overshoot, then it switches to the normal PID operation. i'm not totally happy with this, because the overshoot is followed by an undershoot before the PID brings the temp up to SETPOINT. But the total time required to attain SETPOINT (from power on) is only 90 seconds, and in this geometry the bud needs to "cook" for about 60 seconds at SETPOINT before the trichomes melt and the vapor starts in ernest. i'm resigned to the fact that my heater design just can't do faster than 90 seconds to first hit.