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DuinoCoinUSBI2C_Adaptor

This project is designed to allow computer without I2C interface to mine Duino-Coin on I2C miner. The adaptor is suitable for most AVR/ESP with USB-Serial chip onboard.

Using a single USB port to communicate with all the boards and make a scalable I2C mining rig with or without USB hub

This USBI2C Adaptor exists because SBC like Raspberry Pi is either too expensive or there is challenge in supply. Whereas PC/laptop is what most people already have, the adaptor can be used to test the I2C rig or solution to mine Duino-Coin

Video Tutorial

coming soon

Python Environment Setup

Linux

sudo apt update
sudo apt install python3 python3-pip git screen -y # Install dependencies
git clone https://github.com/JK-Rolling/DuinoCoinUSBI2C_Adaptor.git # Clone DuinoCoinUSBI2C_Adaptor repository
cd DuinoCoinUSBI2C_Adaptor
python3 -m pip install -r requirements.txt # Install pip dependencies

Finally, connect your USBI2C_Adaptor to USB and I2C AVR miner, and launch the software (e.g. python3 ./AVR_Miner_USBI2C.py)

Windows

  1. Download and install Python 3 (add Python and Pip to Windows PATH)
  2. Download the DuinoCoinUSBI2C_Adaptor
  3. Extract the zip archive you've downloaded and open the folder in command prompt
  4. In command prompt type py -m pip install -r requirements.txt to install required pip dependencies

Finally, connect your USBI2C_Adaptor to USB and I2C AVR miner, and launch the software (e.g. python3 AVR_Miner_USBI2C.py or py AVR_Miner_USBI2C.py in the command prompt)

Version

DuinoCoin USBI2C Version 3.0

USBI2C - USB-to-I2C Master

The adaptor can be any board with USB-Serial chip such as CH340, CP201x

Supported board includes ESP8266 (e.g. Nodemcu, Wemos Lolin), ESP32 (not tested), Arduino Nano/UNO

The baudrate affects how fast the Serial port communicates. The stable baudrate is 115200. Other baudrate may or may not work properly

Modify #define BAUDRATE 115200 to change the baudrate of USBI2C adaptor

Miner - I2C Slave

The corresponding I2CS worker code can be downloaded from DuinoCoinI2C_RPI

Supported AVR includes Arduino Nano/UNO, ATtiny85, Pico

Max Client/Slave

USBI2C adaptor will scan I2CS from address 0x1 to 0x7f

The theoretical number can be up to 126 I2CS slaves per USBI2C adator

With multiple instances of USBI2C adaptor, the average share rate can be improved by dividing workers across them

Connection Pinouts

Connect the pins of USBI2C and AVR like the table/images below, use a Logic Level Converter to connect between the ESP and Arduino/ATtiny85. LLC is not needed if Nano/UNO itself is the adaptor

ESP8266 Logic Level Converter Arduino
3.3V <---> 5V
GND <---> GND
SDA D2 <---> A4
SCL D1 <---> A5
ESP8266 Logic Level Converter ATtiny85
3.3V <---> 5V
GND <---> GND
SDA D2 <---> PB0
SCL D1 <---> PB2
Nano Nano
5V <---> 5V
GND <---> GND
SDA A4 <---> A4
SCL A5 <---> A5
Pico Pico
VBUS <---> VSYS
GND <---> GND
SDA GP6 <---> GP6
SCL GP7 <---> GP7

Nano USBI2C Nano

Wemos USBI2C d1r2

Nodemcu USBI2C nodemcu

Pico USBI2C pico

License and Terms of service

All refers back to original Duino-Coin licensee and terms of service