This post’s subject is the design and assemble of a symmetrical power source, to supply operational amplifiers (op-amps).
Category: Projects
Scale with HX711 module and Arduino
This the project of a scale with a HX711 module and an Arduino, to measure filaments used in 3D printing.
XR2206 function generator kit assembly
This post shows the assembly process and explains how to use the function generator based on integrated circuit XR2206.
Automatic battery charger
This is a project of an automatic battery charger circuit, which interrupts charging when the battery reaches a limit.
Assembling a mini Tesla coil
This post subject is the assemble and operation of a mini Tesla coil kit, which is supplied by a DC voltage between 9 and 30V.
Multiplexer: definition and applications
The multiplexer is a combinational circuit with many data inputs and selects one of them to transmit on a single output.
Optocoupler with phototransistor
The optocoupler electrically insulates a circuit’s input and output. The operation and some projects are shown in this post.
DHT11 and DHT22, temperature and humidity sensors
DHT11 and DHT22 are sensors manufactured by Aosong, with a digital output for measurements. Here, it’s shown how to use it on Arduino.