Questions tagged [1-wire]
A serial communication protocol providing data communication and power transmission over a single line.
45 questions
0 votes
0 answers
37 views
Help reading DS28E01 eeprom
I have followed this page to connect the chip to the pi and have gotten far enough to see the device in the W1 folder, but I have yet to actually find the eeprom file. I have two of the same chip so I ...
1 vote
1 answer
148 views
Sensor DS18B20 randomly not detected by Raspberry Pi 3b+
I have a DS18B20 temperature sensor connected to a Raspberry Pi 3b+. I created a simple Python program to monitor the temperature of my heating system. The program works very well....when it works......
- 45
1 vote
1 answer
1k views
1-Wire internal pullup isn't enabled on boot, but can be enabled after boot
On a Pi 4 I have the following lines in /boot/config.txt: dtoverlay=w1-gpio gpio=4=op,pu This should enable 1-wire on the default GPIO pin, which is 4, and then enable the internal pullup resistor. ...
- 131
0 votes
2 answers
66 views
Damaged GPIO4 1w
My system was working 100% with two sensors on the GPIO 4 for 1w. The damn wire broke and think I damaged the GPIO 4 pin as the sensors aren't being registered. Could I use a different GPIO pin? My ...
- 1
1 vote
0 answers
191 views
The w1 folder is not showing up even after enabling the the 1 wire interface
The /sys/bus folder does not contain any folder named w1 even after enabling it through raspi-config or config.txt. This happened after I updated the raspi. I cant find any solution from the different ...
2 votes
1 answer
536 views
Ubuntu 20.10 aarch64 (Raspberry Pi CM4) how do I access 1-Wire devices?
Running Ubuntu 20.10 aarch64 (Raspberry Pi) on a Compute module 4 Am scratching my head on how do I access 1-Wire devices? I've tested the DS18B20 sensor using Raspberry Pi OS and it works by enabling ...
- 610
7 votes
2 answers
8k views
DS18B20 and RPi Pico
I will be getting my Raspberry pi pico here in a few days and want to connect a DS18B20 and use MicroPython. I have a project the uses RPi zero w and Python3.9. Since obviously, the pico does not use ...
- 320
1 vote
1 answer
2k views
DS18B20, W1ThermSensor, Raspberry pi Zero W, and Python3.9 - Does not consistently read sensor
Before I start, I have browsed the "similar questions" section before writing this and could not see one that matched a situation like mine. If one is found, please let me know and I will ...
- 320
1 vote
0 answers
581 views
DS18B20 stopped recently
I have read a few posts here on my issue, notably DS18B20 not detected by Raspberry Pi, but unfortunately none of the suggestions worked for my issue. I am seeking advice on additional troubleshooting ...
- 109
1 vote
1 answer
477 views
How to reduce the polling frequency of the w1-gpio module on an Raspberry Pi?
I would like to know how to influence the polling frequency of a device on the w1-gpio module. The reason is because I have a DS18B20 temperature sensor on a Raspi that reads too hot. The first thing ...
- 11
0 votes
0 answers
343 views
Can't change rw file into eeprom on a ds28ec20
I try to follow this article Writing/Reading an EEPROM chip using 1-wire bus for read and write into my ds28ec20. The datasheet of my components said the ds28ec20 is compatible in read/write acces ...
- 1
1 vote
1 answer
724 views
Issue with Pi 4 and 1wire
I've got a Pi 4 and went to hook up a couple sensors, the first being a DHT11, it's working fine. The second being a DS18B20, on the 1-wire interface (using the standard GPIO pin 4). The circuit is ...
- 113
2 votes
2 answers
5k views
Rpi3B+ Python DS2482 I2C to 1-Wire Bridge Connecting 10+ DS18B20 Temperature Sensors Using 30 Metres Long CAT5e Cables
I'm about to build a heating control with DS18B20 1Wire-sensors and the Raspberry Pi 3 Model B+. For the 1Wire-interface I'm using the DS2482-800 multi-channel busmaster (more precisely this pre-...
- 21
2 votes
3 answers
2k views
Does the DS18B20 1-wire temperature sensor ID change with different Raspberry Pi's?
I have set up 3 temperature sensors (DS18B20) and connected them to what I believe is a Raspberry Pi 4. I have only been using the Pi 4 for easy testing before I move everything over to the Pi zero ...
- 161
2 votes
1 answer
1k views
How to write protect in DS2431 Maxim EEPROM using Raspberry Pi
I have connected my circuit as mentioned in the below link: Writing/Reading an EEPROM chip using 1-wire bus I am able to read and write through commands mentioned in the link. I would like to know ...
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