Search found 38 matches

by rodmcm
Wed Nov 20, 2019 7:19 pm
Forum: ESP32 Arduino
Topic: Analog Read Accuracy
Replies: 4
Views: 1411

Re: Analog Read Accuracy

Search this on UTUBE
He gives a polynomial to linearise the analogs..
The best series of tutorials on the ESP32 I have come across


Tech Note 069 - Using the ESP32 ADC and some of its more advanced functions
by rodmcm
Thu Oct 24, 2019 3:41 am
Forum: ESP32 Arduino
Topic: Bluetooth serial bridge
Replies: 3
Views: 1503

Re: Bluetooth serial bridge

I cant see why it doesnt work

Have you tested BT recieve by using something like this

if (Serial.available() > 0) {
// read the incoming byte:
incomingByte = Serial.read();

// say what you got:
Serial.print("I received: ");
Serial.println(incomingByte, DEC);
}
}
by rodmcm
Thu Oct 24, 2019 3:35 am
Forum: ESP32 Arduino
Topic: ESP32 ADC Non-linear Issues - How do I fix / change Attenuation or width?
Replies: 43
Views: 44867

Re: ESP32 ADC Non-linear Issues - How do I fix / change Attenuation or width?

Have a look at this on UTUBE

He provides a polynomial to linearise an analog


G6EJD

Tech Note 069 - Using the ESP32 ADC and some of its more advanced functions
by rodmcm
Thu Oct 17, 2019 7:41 am
Forum: ESP32 Arduino
Topic: ESP32 RC War tank toy with android App
Replies: 4
Views: 877

Re: ESP32 RC War tank toy with android App

B4a and bluetooth
by rodmcm
Thu Oct 17, 2019 7:38 am
Forum: ESP32 Arduino
Topic: Digital Input
Replies: 2
Views: 491

Re: Digital Input

I should have read your code better

You have to attach the interrupt to Pin 14 in the setup, not call it in the Interrupt routine
See
attachInterrupt( , ,)
Google
ESP32 with PIR Motion Sensor using Interrupts and Timers
by rodmcm
Thu Oct 17, 2019 7:35 am
Forum: ESP32 Arduino
Topic: Digital Input
Replies: 2
Views: 491

Re: Digital Input

Have you tried something simple like a print statement in the interrupt routine to see if it's working?

Serial.println(micros());
by rodmcm
Thu Aug 22, 2019 7:37 am
Forum: ESP32 Arduino
Topic: Esp32 update attached arduino?
Replies: 3
Views: 737

Re: Esp32 update attached arduino?

You can program an arduino through the serial port so you should be able to make the ESP32 act as a data pipe, however you've got to get the new compiled program out of the IDE into the BT or WIFI connection to the ESP.
by rodmcm
Wed Jul 03, 2019 4:13 am
Forum: Hardware
Topic: ESP32 stops working for no apparent reason in field
Replies: 15
Views: 2833

Re: ESP32 stops working for no apparent reason in field

Looks like a continuous reset. Perhaps a pull up resistor on the Reset line.
by rodmcm
Wed Jul 03, 2019 4:09 am
Forum: Hardware
Topic: Bluetooth OutPut Power Modulation
Replies: 0
Views: 372

Bluetooth OutPut Power Modulation

I am seeing bad data on an Android Tablet receiving Bluetooth data from an ESp32 that has an external aerial. If I move the tablet away from the ESP then I get a better, but still not great, good data transfer. Is it possible that the BT output send signal is 'swamping' the receiver in the tablet? I...
by rodmcm
Wed Jun 26, 2019 9:13 am
Forum: ESP32 Arduino
Topic: Reading Multiple I2C sensors on ESP32
Replies: 3
Views: 1096

Re: Reading Multiple I2C sensors on ESP32

Probably the reason that no one has answered you is that there are hundreds of answers to this on a simple Google search

Go to advanced search