kodera2tThe first prototype had some circuit problem and now all of them are modified and fully tested. Here I would like to introduce "ULTRA ZERO" in final version!!
I made six unit for sale at my tindie store for $30. Compared to the initial version, I changed CS of microSD card as D10 and RESET of OLED card as D7.
This is very important thing for programming and I would like to write again
CS of micro SD: D10 RESET of OLED: D7OLED is SSD1306 based and Adafruit library is working.
Please visit my tindie store if you have interest! The sold item includes fully-assembled and fully function checked (OLED, microSD...) main board and pin-header for connection. Have fun!!
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