This is another ESP32 with RTC and LED matrix project. This time I have put a ping pong visualization just for fun.
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Category: Digital
Digital clock ESP32 with RTC and LED matrix
Here’s another project using ESP32 with RTC and LED Video wall module. It is basically same with the last project with analog clock
Continue reading “Digital clock ESP32 with RTC and LED matrix”Power sequencer using arduino nano
A power sequencer is useful for audio systems where you can power up each equipment one at a time in sequence. This will prevent pop sound on the speaker during powering up or down. Basically the power sequence is from input to output when powering up and output to input when powering down.\
Continue reading “Power sequencer using arduino nano”64×64 RGB matrix half screen issue
I recently got to work with 64×64 RGB matrix and got into some issue. For some reason it only displays half of the screen. After some research, I figured it is just a simple problem.
Continue reading “64×64 RGB matrix half screen issue”High Voltage AC detector for Arduino
Currently I am working with a automatic transfer switch for solar power and I needed something to detect if there is an AC voltage output of the power inverter and the Distribution utility.
Continue reading “High Voltage AC detector for Arduino”TDA7419 Project (Bluetooth + spectrum analyzer + bass mid treble volume control)
Here is a simple circuit that have 7 band spectrum analyzer, bass mid treble and volume controls and input selector. This TDA7419 project is intended for bluetooth speaker project.
PMOS driver for arduino
In case you are looking to make a Buck controller based on arduino, this is a simple circuit to drive the PMOS transistor mainly for buck circuit applications.
This circuit is simple and only consist of NPN and 1 PNP transistor. The circuit above is part of my MPPT solar charger circuit.
Continue reading “PMOS driver for arduino”Arduino controlled bass mid treble and input selector with tda7419
If you are looking to control your audio with arduino, here’s it is. It uses TDA7419 chip which has a lot of features for controlling your audio. It has 4 input selector, bass control, mid control, treble control, loudness control and a built-in 7 band spectrum analyzer.
Continue reading “Arduino controlled bass mid treble and input selector with tda7419”Adafruit oled library problem Workaround
My latest project includes an OLED display with 128×64 resolution and 1.3inch size. In search for a library, I found Adafruit oled libray problem. The display does not seem to work with this library. Upon doing some research, I gave up and do this work around instead.
Control Electric Fan with Nodemcu thru Wifi Internet Browser
Nowadays, more and more devices are being connected to internet. It allows us to smart control. On this project I will show how you can control your electric fan using an internet browser on you phone or PC. This is very simple project you can build.
