B4R Vibration Sensor [shake switch]
The sensor signals when a sensor shake happens. It''s a simple sensor (detected/not detected) and a simple circuit.
@inakigarm · 2019-10-25
ESP32 Camera Picture Capture and Video Streaming!
I''m using an ESP32CAM camera board with 4GB of PSRAM (like extended memory for the camera). I''m using one similar to this one you can find on Amazon. The board has an OV2640 2MP camera and an SD card slot (it''s worth mentioning this model does not have a USB interface so you''ll need an FTDI programmer).
@miker2069 · 2019-10-05
How to get and spare Json from an Http server, inline C code
How to get and parse Json from an Http server, inline C code
@Laurent95 · 2019-09-30
Check blue tooth communication of your creations
Check blue tooth communication of your creations
@hatzisn · 2019-09-22
Base64 decoding
Base64 decoding
@Erel · 2019-09-08
Shrink your arduino project to the minimum
How to load our Arduino sketch directly (or indirectly) in an ATMega328P-PU microcontroler to place it on a breadboard.
@hatzisn · 2019-08-19
Electronic components pinouts application
I found this application on Play Store and it is very useful for prototyping using components
@hatzisn · 2019-08-15
Arduino Simulator
Arduino Simulator
@hatzisn · 2019-08-13
Memory, Variables and Objects
Memory, Variables and Objects
@Erel · 2019-08-13
rAccelStepper
This is the Arduino AccelStepper library. It provides an object-oriented interface for 2, 3 or 4 pin stepper motors and motor drivers.
@Johan Schoeman · 2019-08-04
MAX7219 7-Segment Driver
This is a very simple example shows how to drive 4-digits 7-segment display with MAX7219 and rLedControl library, this code example displays ''HoLA'' word, you can add more digits and MAX7219 devices. Each MAX device can drive up to 8 7-segment digits. 33K ohm resistor should be connected between pin 18(ISET) and pin 19(V+) of MAX7219, not shown in provided datasheet. Datasheet and connection links below.
@Mostez · 2019-08-01
Resistance color specs reading - Billy Brown habits
Resistance color specs reading - Billy Brown habits
@hatzisn · 2019-07-31
rCheapStepper - library for the 28BYJ-48 stepper motor using ULN2003 driver board
An Arduino library for the 28BYJ-48 stepper motor using ULN2003 driver board
@Johan Schoeman · 2019-07-20
Circuit analysis to the maximum
This is a very detailed analysis on circuit analysis comprising of two videos. They are huge videos (1,5 hours almost each) but believe me it worth it seeing them. I faced all these subjects in Electronics I class of Physics department of University of Athens but the professor was either too lazy or always in a hurry to go into such great detailed analysis and I was really bagged back then not understanding easily these subjects. This guy is a great teacher and the new technologies (when I finished in 2005 there was not YouTube) are a learner''s paradise.
@hatzisn · 2019-07-19
RadioButton with ESP Server
RadioButton with ESP Server
@Hans- Joachim Krahe · 2019-07-17
See human readable Arduino running time
See human readable Arduino running time
@hatzisn · 2019-07-17
rTinyStepper_28BYJ_48 - A library for the 28BYJ_48 stepper motor[s]
This Arduino library is used to control one or more 28BYJ-48 stepper motors. These motors are very small with a built in gear reduction. The advantage of these motors is that they are inexpensive and easily available on Amazon. Their downside is that they''re very slow (0.3 revolutions/second max), and only suitable for light-duty applications.
@Johan Schoeman · 2019-07-13
JSON Parsing
Two methods to help parse JSON strings
@Erel · 2019-07-07
rLCDBitmap
rLCDBitmap
@Johan Schoeman · 2019-07-07
OLED display showing data from a USB to Serial com port using B4R and VB.Net
So you are wondering about sending data through a computer or laptop com port and receiving the data on your Arduino based microcontroller board. Well I decided to put together a short tutorial (one of many on here about this AsyncStreams) on how to receive data, but in this case directly from a computer or laptop. In this particular tutorial I quickly developed a program using VB.Net to monitor my laptop''s CPU utilisation, the program sends the CPU utilisation data directly to the microcontrollers connected com port via your computer or laptop, the CPU utilisation data is then displayed on an OLED display. As you can tell from the VB.Net source code, reading the data is done using PerformanceCounter and sending the data is done using a serial port, both just draged and dropped onto the design screen. I''ve attached the Windows executable in the attached zip file, the target Framwark is .NET Framework 4.5. I''ve also posted the VB.Net source code below the Arduino source code, just looking at the source code and the design screen shot, you should easily be able to recreate the Windows program.
@Peter Simpson · 2019-07-06
rTone - playing tones on a passive buzzer
rTone - playing tones on a passive buzzer
@Johan Schoeman · 2019-07-03
Passive Buzzer playing Ludwig van Beethoven''s Fur Elise
Passive Buzzer playing Ludwig van Beethoven''s Fur Elise
@Johan Schoeman · 2019-06-29
rEasyBuzzer
The Beep Library For Arduino.â This library has been tested on the following devices: Arduino UNO, Arduino MEGA 2560, ESP32
@Johan Schoeman · 2019-06-22
rSevSeg
rSevSeg
@Johan Schoeman · 2019-06-22
SevSeg with inline C
This B4R project uses the SevSeg library via inline C to display characters on a 4 digit x 7 segment LED display (I am using a SMA420364L) - hard wired.
@Johan Schoeman · 2019-06-21
rPN532 RFID reader/writer
A library using the Adafruit arduino library for SPI and I2C access to the PN532 RFID/Near Field Communication chip.
@kolbe · 2019-06-16
IR Control for DSTV Explora Model 2A
This is a sample project for the IR control of the DSTV Explora Model 2A decoder (Digital Satellite TV).
@Johan Schoeman · 2019-06-15
Big/Large Alphanumeric Characters[LCD1602]
Big/Large Alphanumeric Characters[LCD1602]
@Johan Schoeman · 2019-06-08
rGlyphduino - draw custom characters to LCD display [LCD1602]
rGlyphduino - draw custom characters to LCD display [LCD1602]
@Johan Schoeman · 2019-06-08
rLcdBarGraph - draw a bar graph on your LCD display [LCD 1602]
rLcdBarGraph - draw a bar graph on your LCD display [LCD 1602]
@Johan Schoeman · 2019-06-08