Search found 72 matches

by tommeyers
Fri Sep 20, 2019 9:50 pm
Forum: General Discussion
Topic: Connect ESP32 to MS SQL Server
Replies: 4
Views: 51

Re: Connect ESP32 to MS SQL Server

Many ways. I use MQTT on my server, subscribe in Java publish from esp32.

You could also use nodered and JavaScript.

You could also use some language to listen on a port and write to SQL server.
by tommeyers
Fri Sep 20, 2019 9:40 pm
Forum: General Discussion
Topic: Connect ESP32 to MS SQL Server
Replies: 4
Views: 51

Re: Connect ESP32 to MS SQL Server

Many ways. I use MQTT on my server, subscribe in Java publish from esp32.

You could also use nodered and JavaScript.

You could also use some language to listen on a port and write to SQL server.
by tommeyers
Mon Sep 16, 2019 1:38 pm
Forum: ESP32 IDF
Topic: Long battery life for ESP32
Replies: 2
Views: 137

Re: Long battery life for ESP32

Begin by measuring the current in each of the states you listed with time in each state.

Post your results.
by tommeyers
Thu Sep 12, 2019 3:29 pm
Forum: ESP32 IDF
Topic: frequent disconnect of mqtt
Replies: 1
Views: 96

Re: frequent disconnect of mqtt

https://docs.espressif.com/projects/esp ... /mqtt.html

There is a keepalive timeout and flow have you explored that?

Tom Meyers
by tommeyers
Fri Sep 06, 2019 12:59 pm
Forum: General Discussion
Topic: RTOS running on one core only
Replies: 32
Views: 3396

Re: RTOS running on one core only

Thank you, you are more patient than I would be. Another way to argue is: If running RTOS on one processor means that CTOS on the other processor is not an OS then running CTOS on one processor means that RTOS on the other processor is not an OS. Together that would mean that there is no OS on eithe...
by tommeyers
Mon Sep 02, 2019 6:49 pm
Forum: ESP32 IDF
Topic: ESP32 Remote Control Using MQTT
Replies: 4
Views: 195

Re: ESP32 Remote Control Using MQTT

Yes.

Just follow the MQTT process of subscibe/...

I am using MQTT for sensors/actuators on esp32.
by tommeyers
Sun Sep 01, 2019 4:14 pm
Forum: Hardware
Topic: Connecting phone to ESP32 with serial link
Replies: 6
Views: 1188

Re: Connecting phone to ESP32 with serial link

If you search a little you will find headphone to Serial connections wired and IR.
by tommeyers
Sat Aug 24, 2019 1:39 pm
Forum: ESP32 Arduino
Topic: Storing 3D array in memory
Replies: 3
Views: 232

Re: Storing 3D array in memory

"It doesn't work" is not much to go on. So if offer a method I have used to store, retrive and manage my own 2, 3, 4, 5 ... dimensional tables stored in memory or disk or ... . A more experienced C programmer will maybe make it easier; first: int *myInt then: function int fetchMyInt(int x, int y, in...
by tommeyers
Sat Jun 01, 2019 9:45 pm
Forum: General Discussion
Topic: What is the best practice for push-button event tracking/handling without any hardware debouncing circuit
Replies: 7
Views: 990

Re: What is the best practice for push-button event tracking/handling without any hardware debouncing circuit

If you have an oscilloscope take a look. If not, draw a trace with bounce when first pressed, then stable, then bounce when released. Draw two traces. a long press and a short press. bounce bounce bounce stable0 stable0 stable0 bounce bounce bounce stable1 stable1 ... ............................^ g...

Go to advanced search