Edit Project: Spacestate sensors

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This project ties strongly with the [[MQTT]] setup (to connect to the [[SpaceAPI]]) as it uses Tasmota<ref name="Tasmota">Tasmota homepage: https://tasmota.github.io/</ref> on [[ESP]] devices for feature bang and ease of use. Note that you're more than welcome to add any sensor (or actuator) that you might see fit for our hackerspace. Think: 3D printer nozzle temperature or filament weight, outside radiation, air quality, motion sensing, window opener and the likes; this project is proof anyone that can handle a screwdriver and PC can do this. === synopsis === Create a modular repository of sensors and outputs to keep an eye on temperatures (and/or other stuff), especially for monitoring the server room, and optionally, the [sl|h|st]ackspace(s), including the space state switch. === intro === After some iterations of the [[Space state]] switch and [[Mobile Spacestate Indicator|some versions]] of the [[Spacestate indicator]], some different types of temperature sensors, it was time to make it easy on ourselves: switch to [[MQTT]] and use Tasmota<ref name="Tasmota" />. In most cases, an off-the-shelf ESP device will suffice, but since not all devices are not galvanically isolated from mains, it's more practical to use an ESP-12 PCB for things where contacts are bare (like the Space state switch). Here are the steps to setup such a device === configuring a spacestate sensor from scratch === Most of this (apart from the MQTT configuration) only applies to the Spacestate sensor board (see image); it will setup a pinout template that matches the board. * Under '''Configuration''', click '''Configure Other''' * Paste this template: <code>{"NAME":"ACKsensor","GPIO":[0,0,0,0,0,0,0,0,1,0,0,0,1,1],"FLAG":0,"BASE":18}</code> and check '''Activate''' * Fill in '''Device Name''' (<code>ACKtemp</code> or <code>ACKstate</code>) and '''Friendly Name 1''' (<code>Space state switch</code> or leave as is) * Save (will reboot) * Click '''Configure Module''' * Make sure '''Module type''' is <code>ACKsensor (0)</code> * Set functions for '''GPIO17 (ADC)''', '''GPIO16''' (Typically <code>Switch 1</code> or <code>Button 1</code>) and '''GPIO12''' (<code>DS18x20</code> which is connected to 3.3v using ~4k7 pull up) <ref>GPIO-Conversion: https://tasmota.github.io/docs/GPIO-Conversion/</ref> * Save (will reboot again) * Click '''Configure MQTT''' * Set '''Host''' (<code>192.168.1.42</code>), User (<code>temperature</code> or <code>spacestate</code>), '''Password''' (currently, only xopr knows these passwords), '''Topic''' (<code>temperature</code>, <code>switch</code> or <code>spacestate</code>) and '''Full Topic''' (<code>ackspace/hackspace/%topic%/%prefix%/</code>) * Save (will reboot yet again) === notes and troubleshooting === ==== GPIO16 ==== Note that this pin is special (it lives on a separate register internally, but more important, its internal pull resistor is to ground (pull-down) <ref>Github comment on GPIO16: https://github.com/arendst/Tasmota/issues/3263#issuecomment-427155769</ref><ref>Usable pins with description: https://tasmota.github.io/docs/Peripherals/#usable-pins</ref><ref>Boot modes and corresponding pin pulling: https://tasmota.github.io/docs/Expanding-Tasmota/#boot-modes</ref> ==== ADC/GPIO17 ==== Note that the analog in is 0-1V maximum; use a voltage divider to limit its input.<ref>Tasmota ADC: https://tasmota.github.io/docs/ADC/</ref> and <ref>calibration/tuning: https://tasmota.github.io/docs/Commands/#adcparam</ref> ==== space state ==== To read a switch without having a corresponding relay one has to remember the default switch action is <code>TOGGLE</code>, which can be used in traveler-system (hotelschakeling) style: one can turn the light on with switch 1, turn it off with switch 2 (software) and turn it on with switch 1 again while the switch physically is in a different state. To change the behavior of the switch, use <code>switchmode</code><ref>Switchmode: https://tasmota.github.io/docs/Buttons-and-Switches/#switchmode</ref>: <pre> switchmode 1 restart 1 </pre> Note that if you need the reverse (switch connects to poweroff), you need <code>switchmode 1</code>. Also note that <code>restart 1</code> is needed to store the configuration. ==== multiple switches on the spacestate sensor ==== By default, one can use a single switch/button without a relay set. If you want to provide MQTT state for multiple switches without having corresponding relay outputs, you need some rule magic;<ref>Distinguish switch 1 and 2 without the use of relay 1 and 2: https://tasmota.github.io/docs/Rules/#distinguish-switch1-and-switch2-without-the-use-of-relay1-and-relay2 this rule section</ref> <pre> Rule1 ON switch1#state DO publish ackspace/hackspace/%topic%/stat/RESULT {"POWER1":"%value%"} ENDON Rule2 ON switch2#state DO publish ackspace/hackspace/%topic%/stat/RESULT {"POWER2":"%value%"} ENDON Backlog Rule1 1; Rule2 1 </pre> ==== other devices (switches) ==== Note that the space has a [https://templates.blakadder.com/sonoff_Pow.html modified sonoff POW] (old revision) that allows switching with a regular toggle switch while able to monitor the power usage. It uses the following template: <code>{"NAME":"Dangerous POW","GPIO":[32,160,0,0,0,2592,0,0,224,2656,2688,288,0,0],"FLAG":0,"BASE":6}</code> Note that while the GPIO is 5V relative to GND, it most likely is 225V above earth potential: insulate well and never connect it to your PC. ==== calibrating POW module ==== To calibrate a POW module (like in the hackcorner), you need the following<ref>Power Monitoring Calibration: https://tasmota.github.io/docs/Power-Monitoring-Calibration/</ref>: * Multimeter (for measuring mains voltage) * Resistive load (higher=better, like the 500W SMD rework station) Steps: * monitor mains voltage * go to the sonoff console tab of the device * turn on the hot air station and crank up the dial * input the following (adjust the voltage and current accordingly) : for current, you use the formula: <code>P/U*1000</code> = 500/227*1000 = in this case <pre> VoltageSet 227 PowerSet 500 CurrentSet 2202.64 restart 1 </pre> ==== recovery ==== When a device doesn't respond or won't connect to wifi, you might need to trigger recovery mode<ref>Device recovery: https://tasmota.github.io/docs/Device-Recovery/</ref> by: * power it off for 30 seconds * power on 7 times with less than 10 second interval Note that this only works if <code>SetOption65</code> is <code>0</code> (which one would have disabled if brown-outs occur often. === links === <references/>

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