Do you think is an extremely hard task to make a 1-Wire Barometer by your own? Well, you should think it twice, as you will try to make a 1-Wire Barometer today! Would you accept the challenge?

The aim for this project is to make a simple yet reliable 1-Wire barometer with reasonable pressure resolution.

Those components that you needed for this task are:

  • A Motorola MPX4115 Silicon Pressure Sensor
  • A Dallas Semiconductor DS2438 Smart battery Monitor
  • A Voltage regulator
  • An operational amplifier
  • A diode
  • Some resistors
  • Some capacitors

Ok, let’s get the project show started…

Mounting the DS2438 Part

The DS2438 is a surface mount device, and the ordinary IC mounting techniques won’t even work, since its size is too small. Therefore, the DS2438 must be mounted on a DIP IC socket, if you want to use it on a common IC perforate construction board! You can also plug it into a socket on the barometer board later on.

You’d better use the wirewrap wire, as it is easier to strip and solder. You don’t need to solder all the pins. Beside that, you can use the wirewrap to wrap the wires of resistors and capacitors; don’t forget to solder them up after wrapping! [source]

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