# Prototype V1

Microstorm Prototype V1 is the first version of Microstorm. This board is designed to be modulair, easy to use, future proof and small. The board consists of and ATmega328P which is the same microcontroller used in the Arduino Uno and Arduino Nano. The board can be programmed via an external USB to TTL converter. Prototype V1 also enables you to add wireless connectivity to the board, you can add an ESP-01 via the 2x4 header located in de middle of the board. Via a UART-connection, information can be transmitted from and to the ATmega328P microcontroller.

# Features

Compact size 71mm x 48mm
Modular design for a wide range of applications
Based on ATmega328P (Arduino Uno/Nano)
Option for Wifi (ESP-01)
2 Assignable LEDs
Highly-Efficient voltage regulator (Buck converter)
Cheap
Lego Mindstorms NXT/ EV3 Motors compatible (including build-in encoders)
3x I²C Interface (4-pin JST connector)
1x WS2812b Neopixel interface (3-pin JST connector)

# Pin Configuration

Function	Description	ATmega328P - GPIO #
RXD	Receive line of the programming interface	D0
TXD	Transmit line of the programming interface	D1
Motor 1 - driver - enable	Pin for controlling the speed of motor 1	D5
Motor 1 - driver - input 1	Input of the motor driver to control the direction of motor 1	A0
Motor 1 - driver - input 2	Input of the motor driver to control the direction of motor 1	A1
Motor 1 - encoder - signal 1	Rotary encoder signal 1 of LEGO® MINDSTORMS® NXT/ EV3 motor 1	D2
Motor 1 - encoder - signal 2	Rotary encoder signal 2 of LEGO® MINDSTORMS® NXT/ EV3 motor 1	D7
Motor 2 - driver - enable	Pin for controlling the speed of motor 2	D6
Motor 2 - driver - input 1	Input of the motor driver to control the direction of motor 2	A3
Motor 2 - driver - input 2	Input of the motor driver to control the direction of motor 2	A2
Motor 2 - encoder - signal 1	Rotary encoder signal 2 of LEGO® MINDSTORMS® NXT/ EV3 motor 2	D3
Motor 2 - encoder - signal 2	Rotary encoder signal 1 of LEGO® MINDSTORMS® NXT/ EV3 motor 2	D4
Neopixel - Data	Data line for controlling WS2812b LEDs	D8
ESP-01 - TXD	UART-RXD of ATmega328p (software serial)	D9
ESP-01 - RXD	UART-TXD of ATmega328p (software serial)	D10
I²C - SDA	I²C Data line	A4
I²C - SCL	I²C Clock line	A5
Status LED	Driving the pin HIGH turns on the LED and LOW turns the LED off	D13

Function	Description	ESP-01 - GPIO #
FLASH	IO1 Testpoint	GPIO 0
ESP-01 - TXD	UART-TXD of ESP-01	GPIO 1
ESP-01 - RXD	UART-RXD of ESP-01	GPIO 3
Status LED	Driving the pin HIGH turns on the LED and LOW turns the LED off	GPIO 2

# Technical Specifications

Microcontroller	ATmega328p (with optional ESP8266 (ESP-01))
I/O	1x UART (Software), 3x I²C (1 interface), 1x Data line (WS2812b),
Buck converter	Vin = 11.1V MAX / Vout = 5V
LDO	Vin = 5V / Vout = 3.3V
Safety features	None
PCB thickness	1.6mm
Dimensions	70.6mm x 48mm
Input voltage	~11.1V Maximum (Supported operating voltage of LEGO motors)

# Warranty & Certifications

Microstorm Prototype V1 is currently an experimental prototype. This means that there is no warranty or certifications for this board.

Only a hand-full of samples are distributed for testing and educative purposes.