Simple sketch using M5 StickC for counting stepper motor RPM. Sensor using laser and laser detector. Connect laser detector signal to pin 33. Modified from other sketch, there are some unused display related codes.
Arduino
Power tool for Arduino
Making some change to specification before release… Disclaimer Products are developed from extension of my hobby, and little amount is hand-made and sold for other hobbyists. Since they are hand-made by me, there may be initial failure, poor quality in soldering, lack of quality in design, etc. Recommended to use for hobby purpose Please read and understand specification of this product, and test before using. I will hold no responsibility for any damage or harm caused by the use of this product. Description Useful tool based on ESP32 for developing ATMega328 microcomputer such as Arduino UNO, Nano. Have following features. Write / fix Bootloader Fuse Check setting Set fuse (bootloader …
Network support for Arduino firmware tool avrdude.exe (Windows version)
When writing sketch to Arduino, avrdude is used. Normally, Aruduino IDE is used for writing and avrdude itself is not directly used, but avrdude.exe is used from command line in case of writing hex file to flash or checking fuse setting. USB / Serial connections are usually used, but avrdude does have support for connection over network. Connect ESP8266 or ESP32 with Arduino via ISCP, and write sketch to ESP which relays command from network. Then connect ESP to network, and tell avrdude to connect over network. Command line sample is as follows. IP address and port number are passed with net parameter. However, at this point (Sept, 2021), avrdude.exe …
Using Infrared-Temperature sensor GY-906 MLX90614
Recently, I bought cheap infrared temperature sensor, GY-906 from aliexpress, only about $5 including shipping fee. Adafruit MLX90614 library can be used for this module. https://github.com/adafruit/Adafruit-MLX90614-Library Communication via I2C and address is 0x5A. I thought using device is simple as other sensor device; but didn’t work as expected, returning fixed value, 1037.55. After searching through forum, found out that changing I2C frequency to 50000 makes this thing work. I can set frequency at Wire.begin if this is only device I’m using, but once I try to use OLED to show readout, OLED works but sensor stops working again. Finally, I was able to make both OLED and sensor to work …
Stand alone ATMEGA328P-AU blotloader writer
ATMEGA328P-AU is small chip used in Arduino Nano, and chip can be purchased and used for own projects. When designing circuit board, I don’t want to waste space for pattern just to burn bootloader, which is usually only used once for most of the time. I use kit sold from aitendo store in Japan to burn bootloader (sorry, not shipped overseas). http://www.aitendo.com/product/15799 This kit comes with socket for ATMEGA328P-AU and circuit board and some parts. After building kit, connect with Arduino with bootloader burn sketch, then place chip on socket and burn bootloader to ATMEGA328P-AU chip. Since original sketch output result to serial port, I added OLED display so it …
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