RTD Plug

RTD Plug is TaaraNode and JeeNode compatible MAX31865 based SPI inferface board for PT100/PT1000 temperature sensors.

Features

  • RTD to Digital converter: MAX31865
  • Compatible with 2-, 3-, and 4-wire Sensor Connections
  • Interface: SPI
  • Supported sensors: PT100 (PT1000 option)
  • Supply voltage: 3.3V
  • Headers: 0.1″

Resources

Credits

Buy

  • Bare PCB: 3€ 
  • Pre-assembled: 24€ 

 

ESP8266 DHT22 Wifi Humidity sensor

Low cost Wifi Humidity sensor with ESP8266 Wifi module and DHT22 digital humidity and temperature sensor. The board has on-board 3.3V regulator and can be powered from USB charger with USB-A socket. All the pins of the wifi module have broken out to breadboard-friendly 0,1″ headers. Unused pin is connected to 5V input for easier progamming. There is also LED and a button for entering the program mode (hold down while power-up) which makes this board suitable for prototyping and developing apps for ESP8266 Wifi module. When the Wifi module is constantly in full operational mode (with HTTP server etc.) it gets quite warm and can affect the temperature and humidity readings. Keeping the sensor 3-4mm away from the board and/or putting the module in sleep will resolve this problem.

Features:

  • Wifi module: ESP8266-03
  • Digital humidity and temperature sensor: DHT22
  • Supply voltage: 5V
  • Program button
  • Status LED

Resources

Buy

  • Bare PCB: 3€ 

TaaraNode Mini

TaaraNode Mini is small Arduino software compatible microcontroller board with on-board RFM12b radio transceiver. TaaraNode Mini is very similar to the JeeNode but is much shorter and has an option to power it from CR2032 coin-cell battery.

Features

  • Microcontroller: Atmega 328P
  • Radio transceiver: RFM12b (868Mhz/433Mhz/915Mhz)
  • Serial interface: FTDI (3,3v logic level)
  • SPI/ISP header: yes
  • JeeNode style ports: 2
  • Supply voltage: 5-16V DC
  • Clock speed: 3.3V/16Mhz or 3V/8Mhz internal oscillator

Resources

Buy

  • Bare PCB: 3€ 
  • Pre-assembled: 20€ 
  • Pre-assembled without radio: 15€ 

Ethernet Plug

Ethernet Plug is small ENC28J60 based Ethernet controller board for TaaraNode and JeeNode microcontroller boards. Ethernet Plug operates entirely on 3.3V and has a on-board LDO regulator or DC/DC converter. The board can be powered either from microcontroller board it is attached to or via Passive POE. If the DC polarity from the PPOE may be issue there is also place for bridge rectifier which is bridged by default.

Features

  • Ethernet Controller: Microcip ENC28J60
  • Passive POE: default
  • Passive POE polarity auto-sense: optional
  • Supply voltage: 5-16 V DC (LDO, default) or 4.75-34 V DC (DC/DC, optional)

Resources

Buy

  • Bare PCB: 3€ 
  • Pre-assembled: 30€ 

 

TaaraNode Ethernet

TaaraNode Ethernet is a compact version of TaaraNode Ethernet Proto without two extra ports and prototyping area.

Bare PCB: 3€ 

Pre-assembled: 50€ 

1-Wire Plug

1-Wire Plug is 1-Wire to i2c bus converter board based on Maxim DS2482-100 Single-Channel 1-Wire Bus Master chip. It is used to off-load the time critical 1-Wire waveform generation from the MCU to the 1-Wire Bus Master to achieve error free operation with longer 1-Wire bus situations. Board header layout is compatible with TaaraNode and JeeNode microcontroller boards. There is on-board 5V LDO regulator, strong pull-up mosfet and the level converter for 5V to 3.3V i2c interface.

Features

Resources

Buy

  • Bare PCB: 3€ 
  • Pre-assembled: 15€ 

1-Wire Counter

1-Wire counter is a small board for DS2423P 1-Wire RAM with counter chip. This device is unfortunately no longer in production but is still available from HobbyBoards. Only one counter input has broken out and there is a place for pull-up or pull-down resistor. This board is designed for electric energy consumption measurement with optical digital pulse sensors via 1-Wire network. Small board dimensions allow it to be used as a “in-line” converter connected between pulse sensor and 1-Wire cable.

Features

  • 1-Wire device: DS2423P
  • Supply voltage: 5V
  • 1-Wire connector: 3-pin 0,1″
  • Pulse sensor input: 3-pin 0,1″

Resources

Buy

  • Bare PCB: 3€ 

1-Wire Thermocouple

1-Wire Thermocouple is a thermocouple to 1-wire converter board built around Maxim MAX31850 cold-junction compensated 1-Wire thermocouple-to-digital converter chip. The chip works only with 3.3V supply and logic level and there is on-board 3.3V LDO regulator and level converter for compatibility with 5V based 1-Wire networks. Due to the level shifting of the 1-Wire signals the only powering option is via 5V supply i.e. using parasite power is not supported.

Features

  • 1-Wire device: Maxim MAX31850
  • Thermocouple type: K (other types are supported by specific chip from the same family)
  • Resolution: 14-bit, 0,25°C
  • Temperature range: -200°C to +700°C
  • Accuracy: 2°C
  • Supply voltage: 5V
  • Parasite power: not supported
  • 1-Wire logic level: 5V
  • 1-Wire connector: RJ12 or RJ45

Resources

Credits

Buy

  • Bare PCB: 3€ 
  • Pre-assembled: 19€ 

 

TaaraNode Ethernet Proto

TaaraNode Ethernet Proto is JeeNode and Arduino compatible Open Source microcontroller board with on-board ENC28J60 Ethernet controller, MAC chip and RFM12b radio transceiver. The board is software-compatible with JeeNode Ethernet Card and JeeLabs example sketches will work.
MAC address EEPROM is supported via customized UNIO library.

Features

  • Microcontroller: Atmega 328P
  • Ethernet Controller: Microchip ENC28J60
  • MAC address EEPROM: Microchop 11AA02E48
  • Radio transceiver: RFM12b (868Mhz/433Mhz/915Mhz)
  • Serial interface: FTDI (3,3v logic level)
  • SPI/ISP header: yes
  • JeeNode style ports: 2
  • Passive POE: default
  • Power input: 5-16 V DC (LDO, default) or 4.75-34 V DC (DC/DC, optional)

Resources

Buy

  • Bare PCB: 3€ 
  • Pre-assembled: 50€ 

1-Wire Humidity and Temperature sensor

1-Wire Humidity and Temperature sensor is a low-cost Open Source device for measuring temperature and relative air humidity in 1-Wire micro LAN network. 1-Wire network allows multiple devices connected on the same bus in parallel. Every 1-Wire device has a unique 64bit ID.

Features

  • 1-Wire device: Maxim DS2438Z+ ADC with internal 13-bit temperature sensor
  • Humidity sensor: HIH-5030 or HIH-5031 (condensation-resistant)
  • Supply voltage: 2,7-5,5V DC
  • Conformal coating option adds some additional protection against moist air
  • Wiring on the full set model with the RJ12 plug (compatible with Maxim DS9490R USB to 1-Wire adapter):
    1 – VCC (yellow)
    2 – NC
    3 – OW 1-Wire data (green or blue)
    4 – GND (red)
    5 – NC
    6 – NC (black or none)

Resources

Buy

  • Bare PCB: 3€ 
  • Pre-assembled: 30€ 
  • Full set: 35€  
  • Conformally coated full set 38€