#arduino

Jul 24, 2020
4 min

How to extend the number of digital pins of an Arduino or NodeMCU using shift registers

The number of digital pins on a microcontroller seems to never be enough, but with shift registers You can get as many new pins as you like! For my next project, I need WiFi and decided to use NodeMCU. The problem is that it has even fewer usable digital pins than the Arduino Nano. I also need to control four stepper motors, four IR sensors, and a real-time clock. Only for the steppers, I need sixteen pins! Using only the NodeMCU this would be impossible, but the here shift r

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BlueCArd - part 9 - the ultimate Print and Assembly manual

Maty

Jun 26, 2020
2 min

BlueCArd - part 9 - the ultimate Print and Assembly manual

How to print and assembly the Arduino based Bluetooth (BLE) Android controlled RC car BlueCArd. In this tutorial, I'll show You how to print and assemble the fully 3D printed Arduino based and through Bluetooth Low Energy (BLE) with Android device, controlled RC car BlueCArd. At the end of this tutorial, You should be able to build your own BlueCArd. 3D printing the parts I designed all parts to be as easy as possible to print. I used these settings for all parts: 20% infill

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BlueCArd - part 8 - controlling a Servo Motor from Arduino Nano with an Android device

Maty

Jun 5, 2020
3 min

BlueCArd - part 8 - controlling a Servo Motor from Arduino Nano with an Android device

How to connect a servo motor to an Arduino Nano microcontroller and how to control it from an Android device using Bluetooth Low Energy (BLE). This tutorial is part of the BlueCArd tutorials series with the ultimate to build the BlueCArd Arduino based RC car controlled from Android phone through Bluetooth. In this tutorial, I'll explain what is a servo motor and how to connect it to an Arduino microcontroller. I will also show you how to control it remotely from an Android de

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How to control multiple bipolar stepper motors simultaneously using an Arduino Nano

Maty

May 30, 2020
3 min

How to control multiple bipolar stepper motors simultaneously using an Arduino Nano

For my next project, I bought four cheap bipolar stepper motors. In this tutorial, I'll show you how to control all four of them simultaneously using Arduino Nano and utilizing sixteen pins (ten digital and six analog pins) for this. I won't go in detail about how a bipolar stepper motor works. What is important to know is how it is controlled. A bipolar stepper motor has four input wires that have to be set as follow: pins 1 2 3 4 step 1 0 0 0 1 0 1 0 0 2 0 0 1 0 3 0 0 0 1 4

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BlueCArd - part 7 - using H-Bridge to control a DC Motor from Arduino Nano

Maty

May 29, 2020
4 min

BlueCArd - part 7 - using H-Bridge to control a DC Motor from Arduino Nano

How to connect and control a DC Motor to an Arduino Nano using an H-Bridge and how to send commands from Android to the Arduino Nano microcontroller to control the DC Motor. This tutorial is part of the BlueCArd tutorials series with the ultimate to build the BlueCArd Arduino based RC car controlled from Android phone through Bluetooth. In this tutorial, I'll explain how an H-Bridge works and how to use it to control a DC motor. Then I'll show You how to extend the Android Ap

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BlueCArd - part 6 - Controlling the Arduino Nano Bluetooth module from Android device

Maty

May 19, 2020
8 min

BlueCArd - part 6 - Controlling the Arduino Nano Bluetooth module from Android device

How to connect to and control an Arduino Nano with an AT-09 / HM-10 Bluetooth Low Energy (BLE) module from an Android device. This tutorial is part of the BlueCArd tutorials series with the ultimate to build the BlueCArd Arduino based RC car controlled from Android phone through Bluetooth. In the last tutorial I showed you how to connect the Bluetooth module to the Arduino microcontroller and how to send data between the Arduino Nano and the BLE module. In this tutorial we wi

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BlueCArd - part 5 - Arduino Nano Bluetooth module how to (AT-09 or HM-10)

Maty

May 13, 2020
7 min

BlueCArd - part 5 - Arduino Nano Bluetooth module how to (AT-09 or HM-10)

How to connect and configure a Bluetooth module to communicate with Arduino

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BlueCArd - part 4 - DC DC Boost Converter - what is it and why we need it

Maty

May 9, 2020
4 min

BlueCArd - part 4 - DC DC Boost Converter - what is it and why we need it

To power the Arduino Board and the rest of the electronic we need a stable power source. In this tutorial I'll show you what is a DC DC Boost Converter (aka step up converter), how to use it and why we need it The elements used in this tutorial are from the list of elements needed for BlueCArd. The detailed list can be found here: BlueCArd - list of elements The elements needed for this tutorial are: The elements from the last tutorial (without the USB cable): Arduino Nano Fi

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