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Add Thermistor 20-21 notes (#19246)

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Till
2020-11-19 21:07:47 +01:00
committed by GitHub
parent d7aea9608e
commit fcc29fc189
2 changed files with 6 additions and 3 deletions
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Marlin/src/module/thermistor/thermistor_21.h
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@ -26,7 +26,8 @@
#undef OV_SCALE
#define OV_SCALE(N) (float((N) * 5) / 3.3f)
// Pt100 with INA826 amp with 3.3v excitation based on "Pt100 with INA826 amp on Ultimaker v2.0 electronics"
// Pt100 with INA826 amplifier board with 5v supply based on Thermistor 20, with 3v3 ADC reference on the mainboard.
// If the ADC reference and INA826 board supply voltage are identical, Thermistor 20 instead.
const temp_entry_t temptable_21[] PROGMEM = {
{ OV( 0), 0 },
{ OV(227), 1 },