How to make a multimeter from PVC pipe for an auto electrician and a home craftsman

To repair battery tools, car wiring and similar tasks, you need multimeter direct current. This device can be made with your own hands from inexpensive components from the radio market. This device will be able to measure voltage, do dialectics and other diagnostics.
How to make a multimeter from PVC pipe for an auto electrician and a home craftsman

Materials:


  • sewer pipe 50 mm;
  • sheet plastic;
  • digital voltmeter -
  • battery from a push-button mobile phone 3.7V -
  • Micro USB charging module for Li-ion batteries TP4056 -
  • SPDT slide switch;
  • buzzer 5V -
  • red Light-emitting diode -
  • RCA socket for 2-3 contacts;
  • RCA cord with 2 pairs of plugs.

Manufacturing process of a simple multimeter


A piece of plastic pipe with a diameter of 50 mm needs to be heated and then flattened, stretched with two 20 mm tubes. The result should be a body multimeter.
How to make a multimeter from PVC pipe for an auto electrician and a home craftsman

How to make a multimeter from PVC pipe for an auto electrician and a home craftsman

The edges of the body are polished. Plugs for it are cut out of sheet plastic. You can just line up another piece of pipe and make them from that.
How to make a multimeter from PVC pipe for an auto electrician and a home craftsman

How to make a multimeter from PVC pipe for an auto electrician and a home craftsman

Short wires are soldered to the side contacts of the battery.
How to make a multimeter from PVC pipe for an auto electrician and a home craftsman

How to make a multimeter from PVC pipe for an auto electrician and a home craftsman

Then they are soldered to the charging module according to the proposed circuit.
How to make a multimeter from PVC pipe for an auto electrician and a home craftsman

2 output wires are soldered to the module contacts, and it is glued to the battery.
How to make a multimeter from PVC pipe for an auto electrician and a home craftsman

The windows required for installing the buzzer are cut on the front side of the case, LED, voltmeter, switch, as well as 2 tulip sockets.
How to make a multimeter from PVC pipe for an auto electrician and a home craftsman

How to make a multimeter from PVC pipe for an auto electrician and a home craftsman

A hole is cut on one plug for the Micro USB cable.
How to make a multimeter from PVC pipe for an auto electrician and a home craftsman

After this, the components are connected according to the diagram and placed in the housing, where they are fixed with glue.
How to make a multimeter from PVC pipe for an auto electrician and a home craftsman

How to make a multimeter from PVC pipe for an auto electrician and a home craftsman

Before gluing in the plugs, you will need to make a hole opposite the charging module indicator light.
How to make a multimeter from PVC pipe for an auto electrician and a home craftsman

How to make a multimeter from PVC pipe for an auto electrician and a home craftsman

How to make a multimeter from PVC pipe for an auto electrician and a home craftsman

How to make a multimeter from PVC pipe for an auto electrician and a home craftsman

As a result, we get a battery voltmeter with RCA cable probes. They can check the voltage in DC networks, as well as make a continuity test with sound and light indication.
How to make a multimeter from PVC pipe for an auto electrician and a home craftsman

How to make a multimeter from PVC pipe for an auto electrician and a home craftsman

How to make a multimeter from PVC pipe for an auto electrician and a home craftsman

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Comments (2)
  1. Realist
    #1 Realist Guests February 17, 2021 00:51
    3
    Yes basic digital multimeter The B308 costs half as much as a DIY kit of that rubbish.
  2. Sergey K
    #2 Sergey K Visitors April 20, 2021 09:01
    1
    In fact, the device is called a multimeter due to the fact that in addition to voltage, it can also measure, at a minimum, current and resistance.And there is so much fuss to make a mobile voltmeter, which is still unknown where it can be used! After all, where you need to measure voltage from 2.5 to 30 volts, you just need to connect this voltmeter and you don’t need to fuss with batteries, chargers, etc.
    Well, for starters, the whole set will cost commensurately with a simple 830 multimeter, $2.50 retail!