ESP8266 Community Forum

- Sat Feb 04, 2017 9:00 pm #62053 This LCD module is 3.3V and has 16 pin data bus, any trick to connect it to an Nodemcu V1.0 or just a normal ESP8266?

- Sun Feb 05, 2017 1:34 pm #62094 Such LCD isn't suit for ESP, you would need to add I2C or SPI GPIO expanders to have enough GPIOs, but it will be slow as hell to push lots of pixels on the LCD.
I would rather purchase another LCD with SPI interface.

- Sun Feb 05, 2017 5:56 pm #62108

Such LCD isn't suit for ESP, you would need to add I2C or SPI GPIO expanders to have enough GPIOs, but it will be slow as hell to push lots of pixels on the LCD.
I would rather purchase another LCD with SPI interface.

Since I just want to display two large numbers on the display is it suited for me? Is it worth looking for those I2C
interfaces? I've searched for them and I didn't encountered anything, can you point me at some examples?

- Mon Feb 06, 2017 10:51 am #62168 Look at the MCP23017 for example, 16 GPIOs on I2C. There is also the MCP23S17, it is the same but SPI interface.
There are also PCF8574, which is 8 GPIOs on I2C.