Search found 134 matches

by tommeyers
Fri Feb 12, 2021 1:37 am
Forum: ESP-IDF
Topic: MQTT problem
Replies: 6
Views: 820

Re: MQTT problem

What is happening on mqtt broker? You probably can run it as verbose to see more.
by tommeyers
Wed Jan 20, 2021 3:00 pm
Forum: General Discussion
Topic: Seeking WiFi-based personal alert device
Replies: 5
Views: 722

Re: Seeking WiFi-based personal alert device

There exist alert buttons like you describe. I have purchased them in the past. And they xan activate a relay (sold as a pair) Use the transmitter to activate the relay; detect it with an esp. Use IFTTT free service to connect devices. Run something on your phones to receive alerts. Or activate an a...
by tommeyers
Tue Jan 19, 2021 2:40 pm
Forum: ESP-IDF
Topic: starter project - a question about implementation
Replies: 3
Views: 492

Re: starter project - a question about implementation

From my reading it appears that the web server and the dht code will be on the same esp32.

In that case in the dht code write the formatted or unformatted result to a global variable and in the server code pick it up.

Tom Meyers
by tommeyers
Sat Jan 16, 2021 11:26 pm
Forum: General Discussion
Topic: Turn on led remote control
Replies: 4
Views: 892

Re: Turn on led remote control

Oh my so many ways here are a few: 1) a long wire 2) IR transmitter/receiver 3) conncect two esp32's to a common wifi router half way between the two points now only need to transmit/receive 1/2 the distance 4) a small vehicle that carrys the message 5) a whistle sound and listen for it at the other...
by tommeyers
Wed Jan 13, 2021 10:51 pm
Forum: Hardware
Topic: Voltage monitor of battery
Replies: 8
Views: 1353

Re: Voltage monitor of battery

What is it you are measuring. 18650 planned. But what right now? A floating high?

I ask because i wonder what that signal looks like. It it is wiggling the two measurements could be different because of, for example, capacitance.

Thanks, tom
by tommeyers
Tue Jan 12, 2021 1:23 am
Forum: ESP32 Arduino
Topic: Need Suggestions: Liquid level detection
Replies: 1
Views: 393

Re: Need Suggestions: Liquid level detection

Non touch temp sensor? Or imersable.
Microphone - listen for boil?
Camera - watch for boil
Humidity sensor - boil humidity?

Tom
by tommeyers
Wed Dec 30, 2020 12:59 pm
Forum: ESP-IDF
Topic: Enable double precision trigonometric functions
Replies: 4
Views: 868

Re: Enable double precision trigonometric functions

Example code? Results ?
by tommeyers
Wed Dec 16, 2020 10:39 pm
Forum: General Discussion
Topic: Oscillating output GPIO?
Replies: 2
Views: 517

Re: Oscillating output GPIO?

Sometimes that is what is called "ringing". It can be cause by a circuot point being pulled hign and low at the same time. Check what is driving that point setting it high an another factor settinv it low. Tell us what you find. Internal pullups, ... external ... i dont know. Post some code a circui...
by tommeyers
Mon Dec 14, 2020 6:17 pm
Forum: ESP IoT Solution
Topic: ESP32 - SEND SENSOR ALARM TO CELL PHONE
Replies: 1
Views: 864

Re: ESP32 - SEND SENSOR ALARM TO CELL PHONE

Sure you can do that. How: write code.

But first define what you want to do, not how, but only what. Then write how you will do that and finally: write code.

Good luck, Tom
by tommeyers
Wed Dec 09, 2020 11:02 pm
Forum: ESP-IDF
Topic: Mqtt Broker
Replies: 2
Views: 687

Re: Mqtt Broker

1) go to your web browser
2) search for mqtt esp32 broker
3) tell us what you saw

Tom

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