Difference between revisions of "Fireplace controller project"

Revision as of 16:33, 30 November 2017

Basics

• getting nodes http://thomas:xxxxx@isy.home.hentschel.net/rest/nodes/
• get thermostat node http://thomas:xxxxx@isy.home.hentschel.net/rest/nodes/14%2023%20AC%201
• setting temp to 70F via REST http://thomas:xxxxx@isy.home.hentschel.net/rest/nodes/14%2023%20AC%201/set/CLISPH/140

Fan control off:

<node flag='0'>
  <address>14 23 AC 4</address>
  <name>Thermostat - Fan Control</name>
...
  <property id='ST' value='0' formatted='Off' uom='%/on/off'/>
</node>

Fan control on

<node flag='0'>
  <address>14 23 AC 4</address>
  <name>Thermostat - Fan Control</name>
...
  <property id='ST' value='255' formatted='On' uom='%/on/off'/>
</node> 

Thermostat manuals

adjusting dead band for 2nd stage

• Installation Manual (Rev. 1)
• Manual (Rev. 1)
• Manual (Rev. 2)

Design

Thermostat controller schematics

Fireplace controller - called HPC-350-M - can be found here

• Use insteon 2450 to switch fireplace low-voltage control
• Control Insteon 2450 via Thermostat - Heat Control (insteon address: 14 23 AC 3) via ISY program
• Rewire house heater to use the 2nd stage heater control on the thermostat
• Sense fire place heater via 2450 input
• Engage house heater fan via ISY program

Design Rev 2.0

• create fireplace controller with raspberry pi zero + OLED display that fits into single gang box with decora faceplate
• Inspired from here:

Hardware

OLED color display based on SD1331

• the Oled display which will fit into decora blank at this link
• programming the display https://media.readthedocs.org/pdf/luma-oled/latest/luma-oled.pdf

• Rudimentary bit-banging Python driver: Gist at Github
• Native driver package at Github
  • Connect display ground to Raspberry Pi ground (black wire).
  • Connect display VIN to Raspberry Pi 3.3 volt (red wire).
  • Connect display CS to Raspberry Pi CE0 (yellow wire).
  • Connect display RST to Raspberry Pi GPIO 24 (blue wire). You can alternatively use any free digital GPIO pin for the reset pin.
  • Connect display DC to Raspberry Pi GPIO 23 (cyan wire). You can alternatively use any free digital GPIO pin for the DC pin.
  • Connect display CLK to Raspberry Pi SCLK (orange wire).
  • Connect display Data to Raspberry Pi MOSI (purple wire).

pi4j gpio

BCM GPIO

OLED B/W display based on SSD1306

• address 0x7B
• wiring:

= Relay board

• File:Schematic-0G-00004539-Mod-Relay-x1-5V.pdf

Temp Sensor

• Type DS18b20
• Amazon link

Software

• install/enable luma.oled link + examples link, make sure examples run
• install homebrew oledserver/server, use example scripts for verification
• update node-red from current version on RPi https://nodered.org/docs/hardware/raspberrypi
• add "require:require" to the settings.js in the .node-red directory

Enclosure

• the 3d-printable decora cover: at thingiverse
  • Dimensions:

  Device 6.66 x 3.30 cm

  Hole in trim plate 6.68 x 3.32 cm

  2 mm ( 0.20 cm) radius on the corners.

• Buttons are at amazon.

Design questions

How many buttons to control?

1. ESCAPE/BACK
2. UP
3. DOWN
4. SELECT/ENTER
5. recessed reset button

?