The programmable timer can operate in a continuous and cyclic mode. The operating time, pause time, number of cycles - are set independently by using switches. In the service mode, you can see how many times the relay was switched on.

Remote solar powered squirrel monitor. Engineer versus squirrel and the bird feeder. Squirrel has defeated engineer on all previous designs.

Da ich in einem Fachwerkhaus ein Badzimmer sanieren möchte und sich dort aber die Geister zum Thema "Innendämmung" scheiden habe ich lange überlegt, wie ich sicherstellen kann, das die Fachwerkbalken nicht feucht werden und verschimmeln.Jeder hat zum Thema Innendämmung eine andere Meinung. Lange habe ich meine Dämmvariante hin und her berechnet.

Transmit wind and direction data by LoRa to a large digital display.

Using low power LoRa 433 MHz radios it's very easy to remote telemetry amidst huge interfering high voltage switch yards & other structures.

Reads two PS2-keyboard and transmits MIDI commands. Includes arpeggiator and learn/replay mode.

There are many instances when the output of a measuring circuit needs to be presented in a very different form to that of the available input.

Automatische Umschaltung auf Audio-Signalquelle, sobald Signal anliegt

Technische Daten: Mischen (Addieren) von Audio-Signalquellen, optional gemeinsame automatische Lautstärkeeinstellung / Max. 11 Eingänge, max. 11 Ausgänge, Summe Ein-/Ausgänge max. 12 / Standard: Cinch (1 Volt), Stereo / Max.

A wireless sensor networks(WSN) and Ιnternet of Τhinks(IoT) probe.

Using just any PN532 RFID reader/writer board and a USB to TTL cable you can build your own smart card reader and learn about NFC Tags.

I'm again working on a project for school. But this time I'm not uploading it when it's finished, we're still working on it and for some parts we could still use some help. So if you have idea's, please let us know!I'm working on a project that will be used as a DIY domotica system. The different parts in the project that we combine together:

This project describes a Conductivity Shield for Arduino Uno that allows you to accurately measure the conductivity of chemical solutions.

I wanted to end my diarrhea of LED fader designs with a humoristic design. Though it looks like a bad joke, it still has a nice LED fade effect.

A GPS assisted 10 MHz frequency reference with 0.002Hz accuracy controlled by an Arduino Nano

Programmable Logic Controllers are central components of many industrial machines. Most of them are based on a standard computer aproach with CPU/MCU. The goal of this project is to create a PLC with a FPGA.Specifications :

Easy-to-build project to assist you when parking your car into a small space.

The following article will describe how to build up a simple cheap yet very effective 5KG (max) kitchen weight machine for a penny ! Change the strain gauge for a bigger capacity and your bathroom scale is just ready – both are just the same.

The generator, drawing, generates alternating in time multi-colored flashes of light with a smooth change in their brightness.

Digital controlled current source with the good old 723H.

Measure the gain of a NPN or PNP transistor with an ATmega8(8).