B4R Share Your Creations

 

Frequency Counter for PC

B4J app for measuring voltage and frequency using Arduino Nano or Uno. The frequency is counted...

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B4J App for ESP8266/32

edited: connecting to www was added. B4J app for testing and setting ESP8266/32 using AT...

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ESP-01 IoT

The common way for IoT is to set the ESP8266 to server mode and connect to it from the WWW by...

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TFT Text from PC

Display text on TFT screen sent from PC. Arduino is Nano or Uno. TFT screen is 1.8" driver...

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SD TFT Picture Frame

1.8", 128x160 pixels TFT driven by Arduino Uno or Nano to display pictures from SD card. TFT...

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Arduino to PC

Arduino Uno/Nano inputs outputs connected via USB controlled by PC/Android using B4J/B4A app ...

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OLED Oscilloscope

OLED low frequency oscilloscope, bandwidth is DC to 1000Hz. Max sampling rate is 16000 samples...

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Talking Clock

The clock uses ATMEGA328 internal timers to get 1 minute time base which is as accurate as the...

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RS485 <> TTL brakeout board

Hi All, In fact this is not a creation, but an added value for those designing hardware using...

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SD Sound Recorder

A sound recorder and playback for Arduino Uno or Nano with ATMEGA328P device using SD card. The...

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Alarm for Co2 gas

Hi This project was initially just a student project but then I received a number of orders...

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TFT Voltmeter

The code doesn't use any library, the SPI is set by inline C. Using 1.8" TFT with ST7735 driver...

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OLED Voltmeter

Oled display of text and bitmap and analog bar. The code uses wire lib only to drive the I2C...

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TFT Timer

The code doesn't use any library, the SPI is set by inline C. There are functions for...

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Indicates temperature and humidity

This project is used to show temperature and humidity. To reduce the cost, I showed the...

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Talk to Arduino

Control 2 outputs (pins 2,3) of Arduino Uno by talking to your Android device using the B4A app...

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Automated ESP WiFi configurator (once more)

Android configuration app: 0) ESP8266 MCU modules that are with Erel's WiFi Remote configuration...

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an esp8266 making MQTT gateway between rfbridge MQTT client and mobile MQTT client

this example of MQTT client on ESP8266 is built to make a gateway between a rfbridge sonoff with...

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Solar Heating - circulating pump control

Something that worked for more than 40 years broke and I had to find a replacement. I want to...

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Doorbell using I2C EEPROM

A doorbell for Arduino Uno or Nano interfacing EEPROM with I2C. The EEPROM 24C512 is 512Kbits...

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