Logo   LOGGER Breadboard Hardware

Published Source License
Screen Shots
SD Card Issues
Updating Firmware

Reference Information
Airflow Setup
Development Environment
I2C Addresses
Module Setup
Network Setup
Processor Module Pinning
WattNode Modbus Adapter

Development History
Project Status
Software Revisions

PJRC hardware
ESP8266 Information


Before we build PC boards the hardware design was tested on this breadboard. We also used the breadboard to develop the software.

At the left is an IO-Expander-EVM for the TCA9539 chip. This connects via a CAT5 Cable to a Temperature sensor module which has a DS18B2 device. At the right the Prototype board has a Cat-5 tail, a Small PJRC SD Adaptor and a Huzzah ESP8266 development module. The wiring of this module is show on the Processor Module Pinning page.

ESP8266 Information

The Huzzah developement board uses an ESP-12 module which is available from other sources at a lower price.

ESP library documentation is available at: Version 1.6.5 Documentation

There is an ESP12-F that is available for $2.40. It is not clear if this module is certified as an FCC modular device. They appear to be software compatible with the ESP12-E modules from Adafruit. It is also available from ESp12-F for $1.78.

The ESP12-S is available for $2.50, $2 quantity 50 and less in larger numbers. It carries an FCC logo and appears to be certified as a modular device. Discusson on line at: http://www.esp8266.com/viewtopic.php?p=55169.

LOGGER pages copyright 2016-2021 by Dragonnorth Group (Michael Newman).
Send comments and corrections to:
Webmaster: mnewman@dragonnorth.com