With a code size of 1KB on an ATtiny13A MCU, this tiny module measures voltages up to 22 volts and current up to 5 amps. There are a lot of so-called “USB doctor” modules which are used for monitoring currents flowing through a USB connection. They are used for cable or charger testing, quick charge […]
SELF-CALIBRATING USB VOLTAGE/CURRENT METER Read More »
In myteenage years, about 40 years ago, I created a dual linear power supply. I got the schematic diagram from a magazine called ‘Elektuur’, nowadays called ‘Elektor’ in The Netherlands. This power supply used one potentiometer for the voltage adjustment and one for the current adjustment. After many years these potentiometers did not function correctly
Digital Controlled Linear Power Supply Read More »
Do you face such situations when you leave your reading lights, table fans or soldering irons without switching them off and later realize that they were on for too many hours which subsequently jumps off your electricity bills? Well, if you have such a problem of forgetting things which probably most of you would have
Energy Saving Switch With Presence Sensor Read More »
I was playing Starwars Battlefront beta on my PS4 when I noticed how loud the internal cooling fan was sounding. I thought this was normal until I did an internet search about the noise of the PS4 cooling fan. Many searches revealed that the fan is relatively quiet. This was not my experience. I also
Xbox One, PS4, Xbox 360 Cubby cooler; the problem & the solution Read More »
These days in families, both men and women have started working. Both men and women want to succeed in life and for this they have to work hard and spent more time in the offices. Due to this it becomes difficult for both of them to look after their children. Due to pressure of they
Presence Notifier With Push Button Read More »
Note: updated with new firmware, a schematic and a tips for a programmer. A couple of years I embarked on my own home automation project. It started off by building a server controlled 433 MHz transmitter build with an Arduino to switch lots of cheap PT2262 based remote switches. Later I added an Arduino based
MQTT and Wifi Powered Mailbox Flag Read More »
For my first IoT project I wanted to build a Weather Station and send the data to data.sparkfun.com. Small correction, when I decided to open my account in Sparkfun, they were not accepting more connections, so I choose another IoT data collector thingspeak.com. Continuing… The system will be placed on my balcony and will retrieve temperature,
ESP32 Solar Weather Station Read More »
This work describes a framework of ON/OFF, proportional and linear temperature control systems. The design and implementation of this process is done using LABVIEW, virtual workbench software. The project involves includes data acquisition, data processing and the display of data. At the initial stage Data Acquisition is replaced by a microcontroller system as a cost
Temperature Control System Using Labview (Atmega32) Read More »
>> The firmware was updated on 19 Mar 2011 << A few months ago a friend of mine -car mechanical at profession- told me that he had problem with some car sensors. He couldn’t check, with a simple multimeter, if a sensor was working properly. I advised him to buy a LCD oscilloscope instead of
Low Speed AVR Oscilloscope V2.00 (Is Updated on 19 Mar 2011) Read More »
Interestingly circuited actually zener diode test measuring instruments should have a property zener measurement of when you are secure, a voltage see better, but so far no measuring instruments equipped with this feature I… Electronics Projects, Zener Diode Test Circuit Voltage Indicator ATmega8 “atmega8 projects, avr project, microcontroller projects, “ Interestingly circuited actually zener diode test measuring instruments should
ZENER DIODE TEST CIRCUIT VOLTAGE INDICATOR ATMEGA8 Read More »
