davidp11
@david-patel · Se unió el marzo 2025
Facility manager · hospitality · new to IoT
- Temas
- 8
- Respuestas
- 62
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- 0
Respuestas de foro creadas
Traducido del English por IA ·
Quizás sea una pregunta tonta, pero ¿por qué no poner el Wi-Fi en el código una sola vez, si todo está en el mismo campus?
Possibly a dumb question but why not just put the Wi-Fi in the code once, if it’s all the same campus?
Same thing happened to me with one from a starter kit, following.
Not my field, but our building contractor had similar issues on a long cable and it turned out to be grounding. Just in case.
I did a lot of lighting retrofits at the hotels before I touched any IoT, so this one I know.
Get a constant current buck module with a dim input. The cheap ones built around a PT4115 cost a couple of dollars, come in 700 mA versions (or set by a sense resistor), take 12 to 24 V and have a DIM pin. A Mean Well LDD-700H is the nicer branded one. Feed it 12 V, LED on the output, and your ESP8266 PWM pin straight into DIM. 3.3 V PWM is enough for both of those. Around 1 kHz PWM, no flicker you can see, the driver keeps the current flat as the LED heats up.
On the Hermetry side: add a command like light.set with a number parameter to the profile’s catalog as a Basic command, then a Slider control card that runs it. The slider sends once when you let go, not while dragging. For a light I switch off Ask before running, otherwise the shift lead gets a confirm box every time. Bind the current value to what the ESP reports back (I send light.level after each change), so the slider shows what the light is really doing. Control cards walks through it.
I’m still learning this stuff, but I set up the same kind of alarm for the pool chemistry at our hotel, so I can do the second half.
There’s no «between» in alarm conditions, you write it as a group. The form does one comparison per severity, so switch the rule to JSON mode:
"severities": [
{ "severity": "MAJOR",
"condition": { "any": [
{ "key": "ph", "op": "<", "value": 5.5 },
{ "key": "ph", "op": ">", "value": 6.5 } ] } }
],
"debounce": { "mode": "duration", "raise": 300, "clear": 60 },
"hysteresis": 0.1The duration debounce is what stops the dosing dip. The condition has to be true for 300 seconds by the device’s own timestamps before the alarm opens. Our chlorine dose dip lasts about two minutes, so 5 minutes was safe. Since you report every 30 s that’s ten readings in a row, plenty.
Hysteresis 0.1 means it clears at 5.6 or above on the low side, 6.4 or below on the high side, so it doesn’t flap at the edge.
All of this is on Alarm conditions reference, and the debounce part on the page next to it.
Traducido del English por IA ·
¿No cubriría eso el cifrado del proveedor de la SIM? Pensaba que las redes móviles cifran todo por el aire de todos modos.
Wouldn’t the SIM provider’s encryption cover that? I thought mobile networks encrypt everything over the air anyway.
Running on 2 robots since last week. The 6 dB rule was necessary, without it the zone flickered every few seconds in the lift lobby. The kitchen alarm fired once already, a cleaner took a wrong turn after a map update on the robot, and housekeeping caught it in a minute. Still would like the request though, doing it in every robot’s firmware is work.
UWB was quoted at about 10x the BLE tags for our floors, so not this year. Zone level is enough for me, I don’t need it to the metre.
Traducido del English por IA ·
¿Podrías hacer que anuncie por correo electrónico de alguna manera? ¿Como que lea la bandeja de entrada?
Could you have it announce by e-mail somehow? Like read the inbox?
Traducido del English por IA ·
Tyler, esto es perfecto. Le enseñé la página de Residency (somos de EE. UU., no hay ningún requisito de residencia establecido) y se tranquilizó mucho al ver la exportación y la ruta de la API de historial. Quiere que tu idea del CSV mensual sea una tarea fija, así que supongo que ese es mi próximo proyecto. No volveré a mencionar lo de Docker, jaja.
Tyler this is perfect. Showed him the Residency page (we’re US, no residency requirement set) and he calmed down a lot once he saw the export plus history API route. He wants your monthly CSV idea as a standing job, so I guess that’s my next project. Not mentioning the docker thing again, lol.
Could you just give the right motor a bit more PWM until it tracks straight? Like 70 vs 74?
Traducido del English por IA ·
Una imagen de Docker lo haría muy feliz. ¿Dónde la encontraría? Miré en Configuración y solo veo Residency, Data Export y lo de siempre.
A docker image would make him very happy. Where would I find that? I looked under Settings and only see Residency, Data Export and the usual stuff.
Could you put a current sensor on the fan cable and alarm when current flows while it should be off?
Not my field at all, but I’d guess redundancy? Two of everything in safety?
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¿Están conectadas las tierras (GND) entre las dos placas? A mí ya me ha pasado eso.
Are the grounds connected between the two boards? I’ve been caught by that one.