Circuits with PIC micro's & analog IC's


The Best 10 ESP32 Projects

Click here to to start use the ESP32 module    

Download  ESP32-DevKitC Getting Started Guide, click here

Buy many  fine Arduinio modules

New Pro Mini atmega328 - good price! Buy it here

Great programmer. Buy it here



Arduino to Arduino by Bluetooth

In the Connecting 2 Arduinos by Bluetooth using a HC-05 and a HC-06: Pair, Bind, and Link post I explained how to connect a HC-05 to a HC-06 so that when powered they automatically made a connection. Click here for more info


Fritzing is an open-source hardware initiative that makes electronics accessible as a creative material for anyone. Click here for more info

ESP8266 With DHT11 Temperature Humidity Monitor

Standalone USB data logger

The Standalone Temperature Logger has been merged with the Standalone Voltage Logger to give the Standalone Temperature/Voltage Logger available in kit form.

A standalone temperature logger in a small compact form factor with minimal parts using the ATtiny85 and an I2C external EEPROM powered by a 3V coin cell. Extract the data logged by connecting to your PC using a USB cable.  The standalone temperature logger uses V-USB – There are 2 versions, v3.0 & v2.0 which uses USB and v1.0 which connects to an Arduino to transfer the data.

Click here for more info

ESP8266 Temperature / Humidity Webserver with a DHT11 sensor

The ESP8266 ESP-01 is used as a WEB Server to Display Temperature and Humidity information from the DHT11 sensor.. Click here for more info.

Low cost WIFI temperature (DS18B20) data logger based on ESP8266 with connectivity to NOT Arduino

Temperature data logger based on ESP8266 and DS18B20 1-Wire temperature sensor.

Just only $5 ESP-01 board and DS18B20 sensor.

Software is written in LUA language and is running directly in ESP8266.

No other MCU needed!

Click here for more info

Arduino datalogging accelerometer with µ-SD storage

The Arduino Pro Mini is a microcontroller board based on the Atmel ATmega168 (datasheet). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, an on-board resonator, a reset button, and holes for mounting pin headers. A six pin header can be connected to an FTDI cable or Sparkfun breakout board to provide USB power and communication to the board. Click here for more info

ECG simulator width ATTINY45

A ATTINY45 is the heart of the system. The ecg is put down digitized in an array and the controller read everything approx. 1,3msec this array. The ecg curve is produced by means of PWM and smoothed width a two-way low-pass filter. Click here for more info.

Arduino DIY DC Amp Volt Watt Meter

Build this simple DC watt meter. Click here for more info.

Arduino motor controler

Arduino + Ultrasonic sensor + MP3

Arduino that can detect the presence of people with an ultrasonic sensor. It then proceeds to play an MP3 song with a Yampp Industrial III.

Arduino wireless temperature sensor

Arduino with LM35 temperature sensor

Online Thermometer

Click here for more info

Time-Lapse Camera Controller

Water Tank Depth Sensor

Arduino EMF detector

Arduino ethernet controler

Wireless Altoids display

Digital voltmeter – Arduino and PC (Visual C++) comunication via serial port

Theremin as a Capacitive Sensing Device   using Arduino

Here we show a little Theremin module which plugs onto a Arduino Board that gives out the tune to a speaker or puts out the tune as control signal like MIDI, Servo  etc. We were using this device not only as a musical instrument, various kinds of proximity sensors, pointing devices or as interface in combination with Processing, Max or Pd have been build with this technique. Click here for more info



Chicken Light Relay Timer

Get more eggs from you Chicken! Click here for more info


Very simple Arduino Lithium-ion battery capacity tester/discharge monitor