Programmer for Atmel (Microchip) Studio
Three programmers for Atmel Studio are presented and compared: the AVR Dragon, Atmel-ICE and the USB ISP-Programmer from Tremex / Diamex.
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Digispark – the convenient ATtiny85 alternative
In my last post I described how to upload your sketches to an ATtiny85 (or 84, 45, 44, 25, 24). To do this, you have to set up…
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Programming ATtiny85 / 84 / 45 / 44 / 25 /24
Step-by-step instructions: how to upload sketches to the ATtiny85, 45 or 25, using an Arduino board or USBtinyISP programmer.
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I2C scanner
An I2C scanner sketch is introduced. This allows to determine I2C addresses or to check non-functioning circuits with I2C component.
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Port expander MCP23017
The 16-bit I/O port expander MCP23017 is introduced including a library. The functions are explained by sketches and circuits.
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Counter ICs
The counter ICs 4040, 4017 and 4033 will be presented. In addition to the counter function, I explain how to use the counters for port expansion.
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ESP-01 port expansion
Port expansion for the ESP-01 using the MCP23017, PCF8574 and the 74HC595 shift register are explained in this post. With circuits and sample sketches.
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ESP8266 ESP-01 module
Controlling ESP-01 modules with the Arduino IDE is explained step by step. I provide example sketches with circuits. Also: AT commands.
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Arduino controlled DFPlayer Mini
How to control the DFPlayer Mini with Arduino or buttons; specifications and properties; folder and file structure; DFRobotDFPlayerMini library
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MP3-player YX5300
Control your YX5300 MP3 player with the SerialMP3Player library. And: how to (voice-) control the MP3 player with the smartphone. Also: SD card problems?
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