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en:hw:05-1-wire [2019/10/16 06:49] jan_kozak |
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| - | ======%hide 1-Wire Devices ===== | + | ====== 1-Wire bus ====== |
| - | ====== 1-Wire ====== | + | 1-Wire is a communication bus system designed for low-speed data transmission, signalling and power through a single wire. |
| - | 1-Wire is a device communications bus system that provides low-speed data, signaling, and power over a single conductor. | + | |
| - | UniPi tries to maximize the reliability of the whole network by serializing the bus as much as possible. This is achieved by using 4 wires (GND, VCC, Data-IN, Data-OUT). This four-wire design is used in our 1Wire temperature sensors and 8port hubs. | + | Unipi 1-Wire products are designed for reliability and serialization. For this purpose, Unipi 1-Wire sensors and hubs use a four-wire setup (GND, VCC, DATA-IN, DATA-OUT) |
| - | + | ||
| - | ===== 1-Wire thermometers ===== | + | |
| + | ===== 1-Wire temperature sensors ===== | ||
| {{ :en:hw:03-1wire:xds18b20.jpg?direct&100|}} | {{ :en:hw:03-1wire:xds18b20.jpg?direct&100|}} | ||
| - | The DS18B20 is widely used [[en:automation:02-glossary:1wire-hidden|1-Wire]] sensor in TO-92 package. | + | Unipi 1-Wire temperature sensors are based on a widely used DS18B20 [[en:automation:02-glossary:1wire-hidden|1-Wire]] sensor encased in a TO-92 metal probe. |
| + | |||
| + | * Voltage range: 3.0V - 5.5V | ||
| + | * Temperature measuring range: -55°C / +125°C | ||
| + | * Accuracy: ±0.5°C (-10°C / +85°C range) | ||
| + | * The sensor converts 12-bit temperature values to a digital signal (750 ms max. delay) | ||
| + | * Can be powered by DATA wire (parasitic mode) | ||
| + | |||
| + | ==== Unipi 1-wire temperature sensor ==== | ||
| + | [[https://www.unipi.technology/1-wire-teplotni-senzor-p63|Unipi 1-Wire temperature sensor]] is available in four cable lengths, and features an RJ45 connector. It can be connected to older [[https://www.unipi.technology/cs/neuron-c2|Unipi Neuron]] controllers with RJ45 1-Wire port, or the [[https://www.unipi.technology/cables-reductions-hubs-c41| Unipi 8-port 1-Wire hub]]. The latest Unipi Neuron design and the entire Unipi Axon line are equipped with 3-wire screw terminals, for which the **RJ45 connector cannot be used**. | ||
| + | |||
| + | {{ :en:hw:03-1wire:1-wire-temperature-meter.png?400&direct |}} | ||
| + | |||
| + | If you need to connect the sensor to a controller with the 3-wire terminal, there are two methods you can do so: | ||
| + | |||
| + | - cut off the sensor's RJ45 connector, put ferrules onto the wires and wire them into the 3-wire terminal according to [[https://kb.unipi.technology/_media/en:automation:02-glossary:infografika_axon_2.png|this schematic]] | ||
| + | - use the [[https://www.unipi.technology/cables-reductions-hubs-c41|cable reduction and Unipi 1-Wire hubu]] | ||
| + | |||
| + | The sensor uses a four-wire connection for better reliability of branched networks. If needed, it can be modified for a three-wire connection. | ||
| + | |||
| + | === Possible connections === | ||
| + | == Connecting a single 1-Wire temp. sensors to a Unipi controller == | ||
| - | * Power supply range is 3.0V to 5.5V | + | {{:en:hw:1wire_temp_eng.png?400|}} |
| - | * Measures temperatures from -55°C to +125°C (-67°F to +257°F) | + | |
| - | * ±0.5°C accuracy from -10°C to +85°C | + | |
| - | * Converts 12-bit temperature to digital word in 750 ms (max.) | + | |
| - | * Can be powered from data l | + | |
| - | ==== UniPi 1-wire temperature sensor ==== | + | == Connecting a pair of 1-Wire temp. sensors to an Unipi controller using the RJ45 splitter == |
| - | The [[https://www.unipi.technology/1-wire-temperature-sensor-p63?categoryId=3|UniPi 1-Wire temperature sensor]] is equipped with RJ45 connector, so it is easy to connect to [[en:hw:02-neuron|UniPi Neuron]] controllers and [[en:hw:06-1-wire-hub|UniPi 1-Wire hub]]. In order to connect the sensor to UniPi Axon, you have to cut off the connector, put on the ferrules (see [[en:automation:01-how-to:wiring-hidden|wiring guidelines]]) and screw it to the Axon's 1-Wire connector according to [[en:automation:02-glossary:1wire-hidden#wire_on_unipi_axon|this pinout]] | + | |
| - | The sensor introduces a 4 wire connection for better reliability of larger network, which can be converted to 3 wire version for simplification. | + | {{:en:hw:splittereng.png?400|}} |
| - | {{ :en:hw:03-1wire:1-wire-temperature-meter.png?direct |}} | + | == Connecting multiple sensors using the 1-Wire hub == |
| - | ==== Connecting a single 1-Wire sensor to the Unipi controller ==== | + | {{:en:hw:hub_simple_eng.png?400|}} |
| - | {{:en:hw:1wire_temp_eng.png?600|}} | + | |
| - | ==== Connecting a pair of 1-Wire sensors to the Unipi controller via RJ45 splitter ==== | + | == Creating a network of 1-Wire sensors using multiple 1-Wire hubs == |
| - | {{:en:hw:splittereng.png?600|}} | + | {{:en:hw:hubeng.png?400|}} |
| - | ==== Connecting multiple 1-Wire sensors through a 1-Wire hub==== | + | ==== 1W-T-IB2 / 1W-TH-IB2 on-wall temperature and/or humidity sensors ==== |
| - | {{:en:hw:hub_simple_eng.png?600|}} | + | Unipi product listing also contains the 1W-T/H-IB2 compact on-wall sensors for measuring temperature ([[https://www.unipi.technology/nastenny-teplotni-senzor-1w-t-ib2-p350|1W-T-IB2]]) or temperature and relative air humidity ([[https://www.unipi.technology/nastenny-teplotni-vlhkostni-senzor-1w-th-ib2-p351|1W-TH-IB2]]) in building interiors. The sensors feature a four-wire screw terminal and can be modified for connection both to 3-wire connector and the RJ45 connector. |
| - | ==== Creating a multi-hub extensive network of 1-Wire sensors==== | + | === Connection options ==== |
| - | {{:en:hw:hubeng.png?600 | + | |
| - | |}} | + | |
| - | =====%hide Firvena attachable sensor with hose clamp ===== | + | == 3-wire screw terminal == |
| + | This option is suited for cases where you need to connect only a single sensor to Unipi Axon or Unipi Neuron controller | ||
| - | %hide FIXME | + | {{:cs:hw:senzor_dratovani_3pin_2.png?100|}} |
| - | =====%hide Firvena sensor for air conditioning pipes ===== | + | ===== RJ45 connector ===== |
| + | Modification for the RJ45 connector is useful in three major cases: | ||
| + | - you need to connect a pair of sensors to Unipi Neuron or Unipi Axon controller using the [[https://www.unipi.technology/1-wire-2-port-splitter-p327|2-port splitter]] | ||
| + | - you need to connect a single sensor to an Unipi Neuron with the older RJ45 1-Wire port. | ||
| + | - you need to connect multiple sensors using the [[https://www.unipi.technology/1-wire-hub-s-8-porty-p31|8-port hub]]. | ||
| - | FIXME | + | {{:cs:hw:senzor_dratovani_rj45.png?200| }} |
| + | {{ :cs:hw:rj45-pinout_1-wire.png?nolink&400|}} | ||
