Microcontrollers

The following is a rough guide, the reality is considerably more complicated. I also have an arduino page.

Class	Manufacturer	Architecture	Clock	Wikipedia	Notes
AVR	Microchip (was Atmel)	8-bit AVR	1.6 to 32 MHz	AVR microcontrollers	ATmega328, ATtiny
PIC	Microchip	8-bit to 32-bit PIC	0 to 200 MHz	PIC microcontrollers
STM32	ST Micro	32-bit ARM Cortex-M0+	0 to 48 MHz	STM32	compatible: APM32 by Geehy Semiconductor
SAM	Microchip (was Atmel)	32-bit ARM Cortex-M0+	0 to 48 MHz	Atmel ARM-based processors	e.g. ATSAMD21G18
RP2040	Raspberry Pi	32-bit ARM Cortex-M0+	0 to 48 MHz	RP2040	Raspberry Pi Pico
ESP32	Espressif Systems	32-bit Xtensa LX6 / RISC-V	160 or 240 MHz	ESP32	replaces ESP8266; integrated Wi-Fi and dual-mode Bluetooth
MSP430	Texas Instruments	16-bit MSP430	0 to 25 MHz	TI MSP430	TI range
nRF	Nordic Semiconductor	32-bit ARM Cortex	16 to 70 MHz	Nordic Semiconductor	e.g. nRF51, nRF52, nRF53, nRF91; nRF52833 used in the BBC µBits

Resources

• Make: Boards Guide

Notes

picoPower

You can find documentation for picoPower on the Microchip website: https://www.microchip.com/en-us/search?searchQuery=picoPower&category=ALL&fq=start%3D0%26rows%3D45

Boards

Arduino

I have a dedicated arduino page with more info.

Arduino Board	Wikipedia (Board)	Arduino Docs	Processor	Wikipedia (Processor)	Speed	EEPROM	SRAM
Arduino Nano	Arduino Nano	Nano	ATmega328	ATmega328	16MHz	512bytes	2kB
Arduino Uno	Arduino Uno	UNO R3	ATmega328P	ATmega328	16MHz	512bytes	2kB
Arduino Leonardo	Arduino	Leonardo	ATmega32U4	AVR microcontrollers	16MHz	1kB	2.5kB
Arduino Mega	Arduino	Mega 2560 Rev3	ATmega2560	AVR microcontrollers	16MHz	4kB	8kB

Inventory

This is various stuff which I own.

Arduino Compatible

Quantity	Board	Compatible	Processor	Notes
5	Keywish Nano V3.0	Arduino Nano	ATmega328P
3	ELEGOO Nano V3.0	Arduino Nano	ATmega328P	w/ CH340 USB to Serial chip
2	Lonely Binary Uno	Arduino Uno	ATmega328P	w/ W5100 Ethernet Shield
1	ELEGOO MEGA2560 R3	Arduino Mega	ATmega2560	w/ Arduino MEGA Prototype Shield v3

Raspberry Pi

Quantity	Board	Processor	Notes
1	Raspberry Pi Zero	RP2040	RP2040-Zero
1	Raspberry Pi Pico	RP2040	Type-B-micro Green
1	Raspberry Pi Pico	RP2040	Type-C Black
1	Raspberry Pi Pico	RP2040	Type-C Purple
1	Raspberry Pi Pico	RP2040	Collision Avoidance Robot (YouTube)
1	Raspberry Pi 4 Model B Rev 1.4	64-bit Broadcom BCM2711	'knowing'
1	Raspberry Pi 4 Model B Rev 1.5	64-bit Broadcom BCM2711	'glam'

ATtiny Processors

Quantity	Processor
5	ATtiny13A
4	ATtiny45
4	ATtiny85

ATtiny Boards

Quantity	Board	Color	Processor
1	Digispark Kickstarter ATtiny85 Development Board	ATTINY85 blue	ATtiny85
2	ATtiny88 Development Board		ATtiny88

WeAct STM32 Boards

Quantity	Board	Color	Processor	Github
3	WeAct BlackPill STM32F411CEU6	F411 8M HSE	STM32F411	WeActStudio.MiniSTM32F4x1
1	WeAct STM32G431CBU6		STM32G431CB	WeActStudio.STM32G431CoreBoard

WeAct ESP32 Boards

Quantity	Board	Color	Processor	Github
2	WeAct ESP32-C3FH4 Core Board		ESP32-C3	WeActStudio.ESP32C3CoreBoard
3	WeAct ESP32-C6 Core AN4	ESP32-C6-A-N4	ESP32-C6	WeActStudio.ESP32-C6-A
3	WeAct ESP32-C6 Core AN8	ESP32-C6-A-N8	ESP32-C6	WeActStudio.ESP32-C6-A

AliExpress Boards

Random stuff I got from AliExpress the branding of which is unclear.

Quantity	Board	Processor	Wikipedia
1	ESP-12F WeMos D1 UNO R3	ESP8266	ESP8266

WeAct Studio Debuggers

Debugger	Github
WeAct STLink STM32 Mini Debugger	WeActStudio.MiniDebugger
WeAct DAPLink APM32 Mini Debugger	WeActStudio.MiniDebugger

Programmers

• SparkFun Tiny AVR Programmer (see also Tiny AVR Programmer Hookup Guide)

Breakout Boards

• Pluggable ATTINY Development Board For ATtiny13A/ATtiny25/ATtiny45/ATtiny85 Programming Editor Micro Usb Power Connector