In the situation when you need for your Projects more I/O pins than available on your MCU/Board the simplest solution is to use a "port expander".
For higher density number of I/O pins or just a compact 16 I/O lines interface using the NXP PCF8575 is a very simple solution and with very low usage of original GPIO pins. Actually you need only 2, for the I2C Bus connection.
This extension board was build to be compatible with any modern MCU, from Atmega, PIC, Arduino, ESP8266 to the huge ARM family. The only thing that you need is to have a MCU/Board that has I2C capabilities.
|Shipping Rate||First item||Additional items|
Romanian Post: DCDC_Standard Ground Rate
Standard Registered Post
We recognize our top users by making them a Tindarian. Tindarians have access to secret & unreleased features.
We look for the most active & best members of the Tindie community, and invite them to join. There isn't a selection process or form to fill out. The only way to become a Tindarian is by being a nice & active member of the Tindie community!
20 and something years of Engineering, the force behind the ESP8266-Projects.com Blog where you can find exclusive articles related with ESP8266 and other IOT/Automation things.
For any other questions/custom orders/etc you can contact me anytime at: firstname.lastname@example.org