Search found 13 matches

by BaartCM
Tue Apr 17, 2018 10:20 am
Forum: General Discussion
Topic: ADC speed?
Replies: 13
Views: 5304

Re: ADC speed?

Yes, I know I could use an mcp3208 and get higher sampling rates, I designed and sold an 8 channel board for the raspberry pi on eBay and got 100ksps no problem. It’s an option of course but if there’s any way the internal ADC can get a higher sample rate, why waste money?
by BaartCM
Tue Apr 17, 2018 7:46 am
Forum: General Discussion
Topic: ADC speed?
Replies: 13
Views: 5304

Re: ADC speed?

Hi, I have a vibration analysis project. I have been using the stm32f103 which can get high sampling rates with analogRead() and even higher using DMA but I want to go wireless and the ESP32 seems the logical step forward. Whilst 6 ksps is ok for most of my application, Lubrication deficiency shows ...
by BaartCM
Fri Mar 30, 2018 7:13 pm
Forum: General Discussion
Topic: Help with strings
Replies: 1
Views: 177

Help with strings

Hello, This post is a request for help using painlessMesh , but it is to do with string manipulation above all else. I am creating a character array of 65536 elements representing 32784 ADC readings. The ADC read routine is rdg=analogRead(ADC0); twf[a]=(char)encoder((int(rdg/64))); twf[a+1]=(char)en...
by BaartCM
Wed Mar 28, 2018 4:01 pm
Forum: Showcase
Topic: painlessMesh (the painless way to build a mesh) now also supports ESP32
Replies: 1
Views: 1265

Re: painlessMesh (the painless way to build a mesh) now also supports ESP32

Hi Blackedder,

I have been trying painlessMesh and it seems that it might be the answer to my quest so I have a cunning plan to use it! Thank you for your hard work and for making it available.

Can you tell me what is the maximum number of nodes connected in the mesh?

Regards

Steve.
by BaartCM
Wed Mar 28, 2018 11:25 am
Forum: General Discussion
Topic: Is it possible to use the code ESP8266_MESH_DEMO in ESP32?
Replies: 5
Views: 987

Re: Is it possible to use the code ESP8266_MESH_DEMO in ESP32?

ESP_Sprite wrote:We have code for ESP32 meshes in development, however it is not finished yet. We should be making something public about it in a month or two, however.


Is this available yet? A few months have passed. Fingers crossed, Steve.
by BaartCM
Wed Mar 28, 2018 9:08 am
Forum: General Discussion
Topic: Wi-Fi : Client server data transmission
Replies: 5
Views: 322

Re: Wi-Fi : Client server data transmission

Hi Rakesh Can I ask you what your project is, it sounds like we need a similar solution except I need much more data sending and I dont need to collect that data within a period of time. This is what I have done so far https://github.com/BaartCM/FFT-Analyser/blob/master/BaartFFT.zip the pc requests ...
by BaartCM
Tue Mar 27, 2018 9:22 pm
Forum: General Discussion
Topic: Sensor data transmission from node to hub using espnow
Replies: 0
Views: 198

Sensor data transmission from node to hub using espnow

Hi, I’m working on a project where a number of nodes connect to a hub using espnow and the example code here https://github.com/pcbreflux/espressif/tree/master/esp32/arduino/sketchbook/ESP32_espnow_MasterSlave Firstly, I have never worked with WiFi before so forgive me if this isn’t the best method ...
by BaartCM
Thu Mar 22, 2018 4:28 pm
Forum: General Discussion
Topic: Using the 'flash' pins for GPIO
Replies: 1
Views: 184

Using the 'flash' pins for GPIO

Hi, I have a NodeMCU ESP32. The pinout diagram shows the following pins, 6,7,8,9,10 & 11 as being connected to the flash. They are also shown as being able to be used for PMW. I would like, if I may ... to use them for inputs so I set up the following code to test them int pinButton = 6; //the p...
by BaartCM
Tue Mar 20, 2018 11:48 am
Forum: General Discussion
Topic: ESP32 WIFI-AP + TCP-Socket-Server
Replies: 4
Views: 1584

Re: ESP32 WIFI-AP + TCP-Socket-Server

Hello roge_

I too am very new to ESP32 and trying to learn wifi.

Can you please post your working code so I can learn from it?

Thanks, Steve.
by BaartCM
Tue Mar 20, 2018 9:36 am
Forum: ESP32 Arduino
Topic: Advice needed for vibration analysis project comms.
Replies: 5
Views: 350

Re: Advice needed for vibration analysis project comms.

One other thing I forgot to mention was that the ESP32s must set up their own network, they can’t connect to an existing WiFi network for security (the customers not mine) data stored on the pi would be sent to the cloud via cellular comms.