It is true that Arduino itself can analyse music input. But Arduino spectrum analyzer with MSGEQ7 IC makes the total thing professional grade. Problem is that, MSGEQ7 IC is not exactly cheap and for bigger displays multiple MSGEQ7 IC may be needed. Another problem of MSGEQ7 is less availability as real to use shield. In other words, most will have to buy MSGEQ7 IC as component. That is great but … [Read more...]

In our previous article on using MAX7219 IC to build bigger display with LED, 7 segment segment LED, we talked about multiplexing. For future articles and guides on our website, it is important to know about multiplexing and charlieplexing. Multiplexing, Charlieplexing decreases pin count in a cluster of LEDs. Here is Basic Theory on Multiplexing vs. Charlieplexing & Arduino … [Read more...]

MAX 7219 and MAX 7221 quite commonly used display driver IC for LEDs. Actually the same IC was in the 8x8 LED Matrix display. Right now, we know about 7 segment LED display as electronic component and multiplexing (increasing the number of digital pins in Arduino). Here is how to create Arduino MAX 7219 CNG basic circuit to control LED, 7 Segment displays in own custom ways rather than using … [Read more...]

We can directly use C++ on Arduino instead of using Arduino's default way. Also, we can code with C on Arduino. As readers possibly know - Arduino does not have any special language. But, How to Use Python on Arduino, For Tasks Like to Blink LED?. We need not to compile the Python scripts unlike C++ but simply run the Python scripts from Terminal/iTerm2. That is not exactly great, but kind of … [Read more...]

Obviously these are Made in China and costs around $2. Here is a getting started guide around connecting Arduino with M029 JoyStick and testing with basic code. It is a useful thing for robotics. These analog, has 2 axis, PS2 compatible. Exactly like Nokia's old Symbian mobile phones, we can use this joystick to control a menu, centre click to select or control servo motors. But before doing … [Read more...]

7 Segment LED displays are cheap and various sizes available. Unlike ready to use TM1637 7 Segment LED display module, these are slightly difficult to get started. But once the basic is mastered, they are highly flexible. Here is step by step 7 Segment LED display tutorial for dummies on how to light up with battery to control with Arduino without library. 7 Segment LED displays are nothing but … [Read more...]

Normally in photography we use light meter. Unfortunately, good light meter is not cheap. It is difficult to measure in light in Lux but possible to measure in some units although exactly Lux. That possibly able to deliver an idea about intensity of light. Here is How To on Light Measurement With Arduino, LDR and LCD. We have basic guides around LDR with Arduino., however that is far from meeting … [Read more...]

This is slightly difficult guide for the beginners as it involves soldering and wiring is complex. Here is detailed steps on how to for 1602A LCD display Arduino connection. In this guide we will also talk about the soldering part. The units do not cost more than 3 USD per unit but there is no in-built pins - usually male header pins supplied. We talked about different types of wires in … [Read more...]

As we like basic electronic components over shield, in this guide we will use the hardware, not the shields. We can not give warranty of working about shields. Here is new test codes for Arduino temperature humidity sensor DHT11, DHT21, DHT22 test code for hardware (not shields). 2 libraries needed. Our old guides like DHT11 with TM1637 7 segment display will not work with the new libraries. DHT22 … [Read more...]