วีดีโอ

Yes

Da diferença de temperatura de 5%. eu utilizei um calibrador no código, usando #25 no monitor serial (25= valor da temperatura real que tu está, utilize um termostato genérico) #include <Wire.h> #include <math.h> const int thermistorPin = 34; // Pino analógico do ESP32 const float termNom = 100000; // Resistência nominal do termistor a 25°C (100k ohms) const float refTemp = 25; // Temperatura de referência para a resistência nominal (25°C) const float beta = 3950; // Fator Beta do termistor const float seriesResistor = 10000; // Valor do resistor em série no circuito (10k ohms) float calibrationOffset = 0; // Offset de calibração void setup() { Serial.begin(115200); Serial.println("Iniciando medição de temperatura..."); Serial.println("Para calibrar, envie # seguido da temperatura real (ex: #26 para calibrar para 26°C)."); } void loop() { // Medir a tensão no termistor int adcValue = analogRead(thermistorPin); // Converter o valor medido para a resistência do termistor float voltage = adcValue * (3.3 / 4095.0); // Conversão para tensão (ESP32 é 12 bits ADC) float resistance = seriesResistor * (3.3 / voltage - 1); // Calcular resistência do termistor // Calcular a temperatura usando a relação para o fator Beta float temperature; temperature = resistance / termNom; // (R/Ro) temperature = log(temperature); // ln(R/Ro) temperature /= beta; // 1/B * ln(R/Ro) temperature += 1.0 / (refTemp + 273.15); // + (1/To) temperature = 1.0 / temperature; // Valor invertido temperature -= 273.15; // Converter de Kelvin para graus Celsius // Aplicar o offset de calibração temperature += calibrationOffset; // Imprimir valores para debug no Serial Monitor Serial.print("ADC Value: "); Serial.print(adcValue); Serial.print(" | Voltage: "); Serial.print(voltage, 3); Serial.print(" V | Resistance: "); Serial.print(resistance, 2); Serial.print(" ohms | Temperature: "); Serial.print(temperature, 2); Serial.println(" °C"); // Verificar se há entrada de calibração no Monitor Serial if (Serial.available() > 0) { String input = Serial.readString(); if (input.startsWith("#")) { input.remove(0, 1); float realTemp = input.toFloat(); calibrationOffset = realTemp - temperature; Serial.print("Calibração ajustada. Novo offset: "); Serial.println(calibrationOffset); } } delay(1000); // Delay para a próxima leitura }

Some people like building and upgrading a printer and not just buy a boring bambu filled with proprietary parts

Hello Taiwan, I'd look at the code, I have a feeling it's not built for negative numbers. I haven't tried and I don't know if I will find time to try now. If you understand it a bit, this part will probably need to be changed. //measuring the voltage on the thermistor current = analogRead(termPin); // Convert the measured value to the thermistor resistance current = 1023 / current - 1; --- (maybe there will be a problem here, because I no longer know what the thermistor sends as data.) current = resistance / current; //Calculation of temperature according to the relation for the beta factor float temperature; temperature = current / termNom; // (Y/Y) temperature = log(temperature); // ln(R/Ro) temperature /= beta; // 1/B * ln(R/Ro) temperature += 1.0 / (refTemp + 273.15); // + (1/This) temperature = 1.0 / temperature; // The inverted value temperature -= 273.15; // Convert from Kelvin to degrees Celsius Look at what is going on with the data and where the error occurs. It's been a while since I've done this, I'd have to find more time to test where the error occurs.Let me know. Thanks

Absolutely Same thought

I used PETG and so far it's holding up well :-)

@@inventions654 thank you

Thank you for the info :-)

i was just going to say, it is very annoying. but a cool build.

+1 use mellow music that isn’t shouting and swearing at me

same here the code is wrong