A small but helpful upgrade, if you’re into acquiring your own temperature calibration data. At some undetermined time in the future this might be expanded to a full multi-point calibration mode.
The config menu was amended with the parameter ‘display_adc_raw’. When this is set to 1, the display will show the raw ADC numbers. Temperature regulation is not affected by this, everything else works as usual.
With the help of an external high-temperature probe, you can now quite easily create a table of raw ADC reads vs. temperature measured where you need it, e.g. at the exit of the nozzle (of a certain diameter, for a certain fan speed).
For my device, this looks like this:
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# Youyue 858D+ with V1.45 firmware 22.03.2016 # 7mm nozzle, measured coaxially right at the exit # fanspeed: 4.5 # ---- setpoint / °C ---- ADC / raw ---- measured / °C ---- 50 18 56 60 28 66 70 38 77 80 48 87 90 58 97 100 68 108 110 78 120 120 88 129 130 98 140 140 108 150 150 118 160 160 128 171 170 138 181 180 148 190 190 158 201 200 168 211 220 188 230 240 208 251 260 228 270 280 248 291 300 268 310 320 288 330 340 308 350 360 328 368 380 348 386 400 368 403 420 388 419 440 408 438 460 428 457 480 448 471 500 468 486 |