#37. Connecting a 4x4 Arduino matrix keyboard Today in the lesson we will look at the principle of operation of a matrix keyboard
Operating principle and main components Lead-acid batteries are charged with a constant (rectified) voltage that is stable in level.
I was reading the tape and came across a question about how to increase the reception range of a radio receiver. There are no miracles
General Information White LEDs that are currently in use first appeared in
Main functions It is not possible to connect fluorescent light sources directly to the electrical network. On
Types of electricity meters The legislation provides for the equipping of all residential and non-residential facilities with electricity meters, responsibility for
Kirchhoff's law (Kirchhoff's rules), formulated by Gustav Kirchhoff in 1845, are consequences of the fundamental
Tests of cable lines are carried out with the following frequency: annually - for power supply and distribution
Selecting and installing lighting fixtures is one of the most enjoyable stages of home interior design.
When installing electrical wiring, especially in distribution cabinets, it becomes necessary to organize the wiring. For this
