User manual

1-Wire Application Guide v1.04 Page 30 of 41
In Figure 22, the Flow counter could be as shown in Figure 23, a DLJ75C pulse
counting water meter from www.watermeters.com , which registers one pulse per
gallon of water flowing through the meter.
Figure 23 DLJ75C Water Flow Meter
4.4 Indicator Sensor
Midon Design offered two LED indicator devices, which might be useful for
displaying the state of something remotely via the 1-Wire network.
One sensor, the MD3020H, was DS2406 based and is supported by the
1WSwitch and earlier versions of TEMP08. It had one LED on board which can
be set on or off. This sensor is now discontinued.
The other sensor is the 1WIO LED driver, which has 8 LED’s on board,
individually controlled by the LEDxx command. Up to 20 1WIO LED devices can
be supported on TEMP08, or 1WSwitch. As for the 1WIO relay device, you must
set EIN OFF when using this device with TEMP08 or 1WSwitch.
4.5 Current Sensor
Current sensors can be used to measure mains current flow, which is useful to
determine how energy is being used for a device or a residence.
A current sensor can be fabricated by connecting the parts shown in the
schematic of Figure 24 to a DS2438 or DS2450 ADC (Analog to Digital
Converter). TEMP08 can then read the voltage of the circuit, which will be