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🩹 MKS_TINYBEE ADC reference voltage warning (#27755)

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Fermín Olaiz 2025-03-28 00:18:08 -03:00 • committed by GitHub
parent efa175820f
commit f6eaca6fcd
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2 changed files with 22 additions and 4 deletions
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7
Marlin/src/inc/Warnings.cpp
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@ -898,6 +898,13 @@
#warning "The (-1) AD595 Thermocouple Amplifier requires 5V input supply! Use AD8495 for 3.3V ADC."
#endif
/**
* MKS_TINYBEE Analog Reference
*/
#if ENABLED(EMIT_ADC_REFERENCE_VOLTAGE_WARNING)
#warning "Check your ADC_REFERENCE_VOLTAGE on MKS TinyBee! Measure the Analog Reference voltage on the board. See pins_MKS_TINYBEE.h for details."
#endif
/**
* No PWM on the Piezo Beeper?
*/

19
Marlin/src/pins/esp32/pins_MKS_TINYBEE.h
View file

@ -115,10 +115,21 @@
//#define CONTROLLER_FAN_PIN 148 // FAN2
//#define E0_AUTO_FAN_PIN 148 // FAN2
//
// ADC Reference Voltage
//
#define ADC_REFERENCE_VOLTAGE 2.565 // 2.5V reference VDDA
/**
* ADC Reference Voltage
*
* In some boards the voltage reference is a bit off due to low quality
* components. That is enough to throw off the ADC readings and thus the
* temperatures by more than 10°C in some cases. If you experience that
* problem, measure the reference voltage (VDDA) at the 2nd pin of
* TH1/TH2 (with the sensors disconnected) and set ADC_REFERENCE_VOLTAGE
* in your config.
*/
#ifndef ADC_REFERENCE_VOLTAGE
#define EMIT_ADC_REFERENCE_VOLTAGE_WARNING
#define ADC_REFERENCE_VOLTAGE 2.565
#endif
/**
* ------ ------