Electronic diagrams

 

A basic example of a 1-wire bus with components

The components include an interface / driver for the serial connection to the PC, a temperature sensor (DS18B20), an I / O (DS2408) to control or to measure high / low signals  and a 16 bit ADC (DS2450) to to measure voltages up to 5V. The I / O and ADC ICs  are supplied by the bus for power, parasitic power mode


Click on the scheme for  full-size



An 8-channel IO control scheme with "watch dog timer.

The 1-wire IDE (DS2408) must be controlled every couple minutes. Otherwise the 4060 count will come to its maximum, all outputs will be blocked. This prevents the heater is left on while the software is stopped for example.

The 4060 timer is reset by the strobe output of the ds2408.

Click on the scheme for  full-size

Ulterius