RF Remote ATtiny24 An uncomplicated radio system that enables remote switching of two power consumers whose power requirements do not exceed 250 VAC 5A The range of operation without additional antenna is about 30 m. The relays can operate in bistable or pulse mode, To control the drive of the entrance gate or the garage…
USB programmer There are few components – the ATtiny45 microcontroller, two Zener diodes, a capacitor and several resistors. Of course, there are still connectors – USB plug and IDC-6 plug. Resistor R1 informs host about presence of USB device transmitting data in Slow mode. The resistors R2 and R3 in combination with D1 and D2…
ATtiny25 Programmable Timer To describe the operation of the device, we will use an example – control of the electromagnetic bolt mounted in the wicket. In the simplest version we require that the push button attaches the bolt electromagnet for a certain length of time, sufficient to reach the gate. Then, the solenoid should be…
The presented layout is a snap on a computer for measuring DHT22 temperature and humidity. It measures the temperature from -40 to 80 ° C with a resolution of 0.1 ° C and accuracy of 0.2 ° C and humidity from 0 to 100% with a resolution of 0.1% and accuracy of 2%. The device…
Brushless asynchronous motors, with compact rotor windings, called short cages, are used to drive different fans. Their advantages are durability and simple construction. The presented layout uses a certain characteristic of such a fan to regulate its rotational speed. The operation is based on a group control method – the motor is powered by a…
Atmel ATTINY24 microcontroller based automatic battery charger circuit can charge 12V batteries with different power on (1A…10A current setting range of the charging current with limitation 10Ah, 20Ah, 30Ah, 40Ah, 50Ah, 60Ah, 70Ah, 80Ah, 90Ah, and Max. 100ah wind with a capacity of 12V lead-acid batteries can be used. Current control 2x 0.1-Ohm 5w resistors…
IR2104 240W Fluorescent tube Ballast Circuit. Work was designed an electronic ballast for starting six fluorescent lamps with a total output of 240W with integrated dimming-controlled analog input and button. Priority is set to control voltage. If the input voltage less than 0.5 V, tests with the push of a button. Measuring the voltage at…
DC-DC Laboratory Power Supply 0-30V 0-3A LT1074 is a switching regulator type step-down (lowering) with a maximum current of 5 A. Can work with the value of the input voltage up to 60 V version (HV) and the output voltage can be set in the range of 2.5 V – 50 In. Without modifying the…
TAS5706A Class D Amplifier was itself the signal processor. From this parts depend all the other elements. Has an impact on the type of power supply, the control method of the type converter. That is why he was first selected DSP processor. There are more firms that produce the processed signal processors whose internal connection…
TDA9859 The main part of the preamplifier is an integrated circuit TDA9859, this integrated circuit is controlled via the I2C microprocessor Atmega128. Individual settings of the preamplifier through the keyboard are displayed on the graphical LCD display. Integrated circuit TDA9859 The preamp allows you to adjust the volume level, bass, treble, and balance in a…