Ein Atmega128A übernimmt die Ansteuerung der RGB Matrix
Der ESP8266 spricht über i2c mit dem Atmega128.
Der ESP8266 spricht über i2c mit dem Atmega128.
Showing posts with label elektronik. Show all posts
Showing posts with label elektronik. Show all posts
Friday, 28 October 2016
Saturday, 25 June 2016
Thursday, 26 May 2016
Drive SSD1306 OLED with I2C on ESP8266 Wemos D1 mini
Bought some cheap and very small 128x64 OLEDs
They were initially in SPI Mode. For I2C some soldering has to be done: Move resistor R3 to R1 and bridge R8.
Two IO Pins are sufficient, if Res Pin goes with 100nF to ground and with 10k Resistor to 3.3V.
DC, CS are on ground.
With Micropython on a Wemos d1 mini:
There is only one small font usable in micropython so I used the very good Adafruit_SSD1306 lib:
Sunday, 1 May 2016
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