For starters, you could use the Pysense board (which has a light sensor and a basic driver) and the AWS example to push the data to AWS IoT. This should work out of the box. What you do in AWS IoT is another topic.

@nobo23 Accirdoig to the datasheet, you can operate that device from the 3.3V output of the WiPy. That matches the signal levels of the I2C interface. Since the module has built-in pull-up resistors (if you install the jumpers), you do not have to add additional ones.

Hello. Recently I've been reading blog - pro4people.com and I have to admin that AWS cloud services got my attention. What ERP system would you recommend if we want to use amazon website services? Is it possible to use SAP on this network? Let me know please, since we are completely new to this subject.

Hi @livius, yes mailbox! here is the text in the documentation of the CCS811 chip: Programming Model: For flexibility and software driver maintenance simplification the CCS811 does not support direct addressing of registers over the I2C bus. Instead it supports single byte mailboxes identifiers that behave as proxies for registers with specific functionality and data sizes. To access a register an I2C transaction must be issued with the target address on the CCS811 being equal to the intended mailbox, this by way of proxy opens access to the register's functionality. In this manner the programming model is rigidy fixed while allowing the underlying firmware to be inherently flexible, extensible and configurable. That's chinese for me! Jiemde

Tidied things up a bit and added some constants to make it 'easier' to see what is going on, may get round to writing a module to for the MCP23017. Any guidance on what the interfaces should look like any where would be useful..? #!/usr/bin/python # # This program is free software: you can redistribute it and/or modify it # under the terms of the GNU General Public License as published by the Free # Software Foundation, either version 3 of the License, or (at your option) # any later version. # # This program is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY # or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License # for more details. # # You should have received a copy of the GNU General Public License along # with this program. If not, see <http://www.gnu.org/licenses/> # I2CBUS = 0x00 # I2C bus number (Always 0 on WiPy) ADDRESS = 0x20 # I2C address of I/O expander. IODIRA = 0x00 # Port A data direction register. IODIRB = 0x01 # Port B data direction register. IPOLA = 0x02 IPOLB = 0x03 GPINTENA = 0x04 GPINTENB = 0x05 DEFVALA = 0x06 DEFVALB = 0x07 INTCONA = 0x08 INTCONB = 0x09 IOCON = 0x0A GPPUA = 0x0C GPPUB = 0x0D INTFA = 0x0E INTFB = 0x0F INTCAPA = 0x10 INTCAPB = 0x11 GPIOA = 0x12 # Port A data register. GPIOB = 0x13 # Port B data register. OLATA = 0x14 OLATB = 0x15 from machine import I2C # Initialize I2C bus i2c = I2C(I2CBUS, I2C.MASTER, baudrate=100000) # Configure all pins on Port A and B as outputs. i2c.writeto_mem (ADDRESS, IODIRA, bytes([0x00, 0x00])) # Send 0xf0 to Port A data register (GPIOA) i2c.writeto_mem (ADDRESS, GPIOA, bytes([0xf0])) # Clear all outputs and reset data direction bits. i2c.writeto_mem (ADDRESS, GPIOA, bytes([0x00,0x00])) i2c.writeto_mem (ADDRESS, IODIRA, bytes([0x00, 0x00])) I was going to post something slightly more useful, but had a hardware problem that has stopped me developing anything further for now (think it was just a broken jumper cable but I haven't had time to do any more yet).