Questions tagged [ds18b20]
DS18B20 is a digital temperature sensor.
46 questions
1 vote
0 answers
99 views
Weird issue with wire.requestfrom() and MailClient.sendMail() on ESP32- rst:0x3 (SW_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
Update_2: No change after Update_1, same error. I still have to comment either email, I2C, or Temperature out, that the other two can work. Update_1: I'm also using a DS18B20 with #include <...
- 11
0 votes
1 answer
316 views
DS18B20 Error in Proteus 8.13
I am using the below code to check temperatures from 36 DS18B20 sensors using Arduino Mega 2560. If any one of them go above 50 deg. celsius, then it sets the output pin to HIGH. I am trying to run ...
0 votes
1 answer
196 views
DS18B20 doesn't work reliably
like discribed in the title my temperature sensor goes to -127 after a few minutes of run time, it works again after a restart, I have already replaced the sensor and I'm using the same code for the ...
- 21
0 votes
1 answer
829 views
DS18B20 temperature sensor crashes MbedOS on Arduino Nano RP2040?
I'm trying to use the DS18B20 sensor with Arduino Nano RP2040. No matter which library I use, it seems to crash MbedOS as soon as the driver is initialized. I get 4 short and 4 long flashes of the ...
- 13
-1 votes
1 answer
288 views
Having a problem with DS18B20 getTempC using an array containing the addresses of the sensors
I have been struggling with this and am at a total loss as to why its not working. Here is my program: #include <OneWire.h> #include <DallasTemperature.h> // Data wire is Arduino pin A0 #...
1 vote
0 answers
165 views
DS18B20 doesn't work with pinMode for other devices
i do some project. There is DS18B20, 3 mosfet modules, 1 relay, display 1602, buzzer... I built it on bread board, everything worked. Now i soldered it: arduino works, display works but DS18B20 doesn'...
- 11
1 vote
1 answer
231 views
Obtaining wrong analog readings using the ESP32 devkitc v4
I know that the topic is not related to Arduino, but I am completely sure that someone can help me find the problem. I am testing 6 temperature sensors, (3 digital, 3 analog). The digital ones are &...
- 19
5 votes
1 answer
414 views
VSCode vs. Arduino IDE - same program, different behavior
I've got this simple program for testing DS18B20 temperature sensors. #include "OneWire.h" #include "DallasTemperature.h" #define ONE_WIRE_BUS D3 // Setup a oneWire instance to ...
- 261
1 vote
0 answers
32 views
Combining the code of MAX30100 and DS-18B20 [duplicate]
sorry to ask this but I am very very new to Arduino. My project aims to collect the skin temperature by 18B20 and the heart rate & SPO2 level by MAX30100. I have tested the codes for the ...
- 11
1 vote
0 answers
249 views
How to name the temperature sensors instead of printing address using ds2482-100 and ds18b20 sensor- Help
I am using 10 ds18b20 Temperature sensors using with "DS2482-100" I2C board and Arduino so when I am getting the output like this:- "ROM = 28 46 04 1F 0D 00 00 74 96014B467FFF0A100A 25....
- 11
1 vote
3 answers
20k views
Setting float to two decimal places
I'm trying to set my temperature measurements to two decimal places. Currently what I get are six decimal places. Here is my code: #include "math.h" ... (in loop) temp1 = sensors....
- 185
1 vote
0 answers
34 views
18b20 dallastemperature
I can't compare for the condition Error "sensors not int type" translate to int type does not work. Please tell me the solution to this problem #include <OneWire.h> #include <...
- 11
-1 votes
1 answer
921 views
ESP32 proper DS18B20 wiring
I want to connect a DS18B20 to my newly bought Heltec ESP32 LoRa (V2). For initial testing I have used some standard code: #include "heltec.h" #include <OneWire.h> #include <...
- 174
-1 votes
2 answers
367 views
No contact between DS18B20 and WeMos D1 Mini
I have a waterproof DS18B20 sensor that I have connected to a WeMos D1 Mini microcontroller. This controller connects to Wifi and an MQTT broker, sending the temperature from the sensor and goes to ...
- 147
0 votes
1 answer
162 views
Arduino One Wire Bus DS18B20 self developed driver missing bits or extraneous bits
I recently got to code my own driver for the One-Wire-Bus specifically with the ubiquitous DS18B20 temperature sensor in mind for an application. I am running that code on an Arduino Mega 2560. ...
- 163