Search found 54 matches

by human890209
Fri Jun 12, 2020 7:20 am
Forum: Hardware
Topic: [Solved] How to check if my ESP32 module's chip is V3 or not by Software tools?
Replies: 2
Views: 181

Re: How to check if my ESP32 module's chip is V3 or not by Software tools?

Yes, esptool will print the revision automatically when it connects for any command. You will need esptool v2.8 or newer to correctly detect V3 silicon: Thanks. I tested the official ESP-WROOM-32E module it works. My esptool.exe is built by version 2.6 which showed revision 1. I tried esptool.py wh...
by human890209
Fri Jun 12, 2020 6:09 am
Forum: Hardware
Topic: [Solved] How to check if my ESP32 module's chip is V3 or not by Software tools?
Replies: 2
Views: 181

[Solved] How to check if my ESP32 module's chip is V3 or not by Software tools?

Hi,
I know the new ESP32 V3 chip is out now, which is used by the official ESP-WROOM-32E module. But I bought some dev board lately which's module is not the official one. Maybe 3rd party ones.
Can I use the software tools such as esptool.exe or espefuse.py to check if the chip's version is V3?
by human890209
Thu Apr 16, 2020 9:07 am
Forum: ESP32 Arduino
Topic: [Solved] Why ACS70331 and ACS712 make ESP32 crash when current changes?
Replies: 5
Views: 1528

Re: Why ACS70331 and ACS712 make ESP32 crash when current changes?

[update]
It's DC motor's spark pulses. I replaced the motor with another motor with a cap on it, got a flat line.
I tested with the better motor. ESP32 didn't crash.

Thanks a lot. @ESP_Sprite
by human890209
Thu Apr 16, 2020 7:32 am
Forum: ESP32 Arduino
Topic: [Solved] Why ACS70331 and ACS712 make ESP32 crash when current changes?
Replies: 5
Views: 1528

Re: Why ACS70331 and ACS712 make ESP32 crash when current changes?

[update] I continued to test the voltage with my laptop and the USB oscilloscope. During the heavy test, ACS70331's power supply got spikes. The 7.4V battery's output got spikes which were huge. And I added another voltage converter to convert another 3.3V from the same battery and test the output, ...
by human890209
Thu Apr 16, 2020 12:33 am
Forum: ESP32 Arduino
Topic: [Solved] Why ACS70331 and ACS712 make ESP32 crash when current changes?
Replies: 5
Views: 1528

Re: Why ACS70331 and ACS712 make ESP32 crash when current changes?

(is your ESP32 connected to the same power supply as the motor?) or indirectly (are the cables to the motor close to the ESP32 or its associated cables?) The motor is powered by a separate Motor Only battery. The circuit of the motor is very simple. A 7.4V battery module with switch and connect the...
by human890209
Wed Apr 15, 2020 2:10 pm
Forum: ESP32 Arduino
Topic: [Solved] Why ACS70331 and ACS712 make ESP32 crash when current changes?
Replies: 5
Views: 1528

[Solved] Why ACS70331 and ACS712 make ESP32 crash when current changes?

[Solved] DC motor without the spark cap crashed everything. Hi, My ESP32 dev boad is MH-ET ESP32MiniKit. Lately, I tried to use ACS70331and ACS712 to measure the current of my robot's DC motor. But ESP32 crashed when the current changed rapidly. The motor's stall current I measured from my multimete...
by human890209
Sat Jun 29, 2019 3:39 am
Forum: ESP32 Arduino
Topic: [Maybe Solved]Lag is found using ledc() to control servo
Replies: 0
Views: 499

[Maybe Solved]Lag is found using ledc() to control servo

Hi, I'm using ledc() to control my servos. I'm using 2 360° servos to replace the motors to make a simple robot. Lately, I've found that when I set the duty to 0 to stop my robot, the robot still moving. I use some code to print the duty of ledc() after I set it, the number is set to 0, but the serv...
by human890209
Fri May 17, 2019 8:52 am
Forum: ESP32 Arduino
Topic: How to Save core dump to flash and read it by espcoredump.py
Replies: 0
Views: 735

How to Save core dump to flash and read it by espcoredump.py

Hi, I'm using ESP32 Arduino. I got a crash reboot lately and I couldn't reproduce it. But I realy want to find out if the cause is a hardware(power) failure or a software bug. My ESP32 is working alone, not monitored by a PC serial monitor. I think connecting a PC is not possible for my case, I'm te...
by human890209
Sat Apr 13, 2019 4:24 am
Forum: General Discussion
Topic: Help! ESP32 burnt by Motor Drive Module.
Replies: 13
Views: 3505

Re: Help! ESP32 burnt by Motor Drive Module.

I understand now. Thanks.
by human890209
Fri Apr 12, 2019 10:02 am
Forum: General Discussion
Topic: Help! ESP32 burnt by Motor Drive Module.
Replies: 13
Views: 3505

Re: Help! ESP32 burnt by Motor Drive Module.

its possible. Another option to try on a new motor driver board to help is to put a 100 or 220 Ohm resistor in series with your 2 control wires and PWM wire to your driver board. Thanks. I will try that. Could you tell me the physics theory of the small resistor? Do they protect the ESP32 from shor...

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