arduino

Notes on Arduino microcontrollers

lilypad attiny85

specs
dimensions	25×24×4 mm
memory	8 kB flash ISP
	512 bytes SRAM
	512 bytes data EEPROM / HEF
microcontroller	ATtiny85

For some reason, Arduino IDE does not detect this board in any port (at least on my machine). However, pressing Upload will prompt you to plug in the board within 60 seconds and it will automatically detect it anyway.

Digispark (Default - 16.5mhz)

uno r3

specs
dimensions	53.4×68.6 mm
memory	2 kB SRAM
	32 kB flash
	1 kB EEPROM
microcontroller	ATmega328P
weight	25 g

monochrome OLED display

Holly's screen showing static through a magnifying lens — “Please do not adjust your set”

pinouts, Adafruit
pin	description
1	ground
2	3V Power In (100–150mA)
3	unused
4	DC data/command pin
5	WR write pin
6	RD read pin
7	Data0 (SPI Clock)
8	Data1 (SPI Data In)
9–14	Data2–7. used for 8-bit mode. don’t use in SPI mode
15	CS chip select
16	RS reset
17–19	unused
20	frame ground

connections with the Uno (8-bit mode)
uno	display
ground	0
3.3V	1
D8	4 (DC)
D9	16 (RS)
D10	15
D11	8 (Data1)
D13	7 (Data0)