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Digital Multimeter/Oscilloscope Free

### This Digital Multimeter/Oscilloscope help you to measure: 1 - Volts 2 - Ohms 3 - Temperature ...

Free

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### This Digital Multimeter/Oscilloscope help you to
measure:


1 - Volts
2 - Ohms
3 - Temperature
4 - The light (lx)
5 - Frequency
6 - Amplitude
7 - Oscilloscope included
8 - Sound Generator sine/square wave 0Hz - 20000Hz included(in version pro)
9 - Color code resistance calculator
10 - Save measuring data!!
11 - Added capacitance meter from 1nF to 10000 mF
12 - Inductance meter!

### It's easy to build, you just need:


1 -A arduino uno or nano
2 - Bluetooth module(HC-05 or HC-06)
3 - Temperature sensor(TMP36)
4 - Some resistances.

### And for Oscilloscope:


1 - A old headphones with 4 pins
2 - Capacitor from 0.1mF to 1mF.

MY WEB PAGE : https://www.neco-desarrollo.es

### Please watch video tutorial How to use oscilloscope:


https://youtu.be/ZwNe8yEjjxo

### **For build the circuit follow this**

### LINK FOR DOWNLOAD SCHEMATIC:


http://neco-desarrollo.es/arduino-multimetro

### LINK FOR DOWNLOAD ARDUINO SKETCH HERE:


http://neco-desarrollo.es/arduino-multimetro

### MY WEB PAGE:


www.neco-desarrollo.es

## Councils to improve the precision:

#### 1 - Check the voltage of 5v pin of arduino after connecting everything, it is the reference voltage to measure ohms when connecting the bluetooth module the voltage drops a bit, it can be in 4.8v, put exact value in the arduino code

#### 2 - The values ​​of the resistances must be precise

#### 2 - You must weld all the connections to avoid parasitic resistances

### Multimeter/Oscilloscope try it now!

Last update

Feb. 27, 2020

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