Vermes
Advanced Member level 4
This device shows how to connect a large number of temperature sensors like DS18x20 to a PC with Windows. The idea is quite obvious, it's shown on this schema:
This is ok, but who now has a COM port in PC. The connection must be made by an USB → COM converter based on FTDI chip like FT232R.
But this can't be connected like that, there must be a small buffer based on 2 transistors.
This thing will be used many times, therefore a component in Delphi was created.
Now writing any application is very easy. One is shown below:
A working circuit on a starting kit – RxD and TxD are blinking while 1-Wire communication:
Program is written in Delphi 2006. Video below shows how to write a simple program in Delphi:
**broken link removed**
Link to original thread (program and driver in attachments) - **broken link removed**
