Search found 123 matches

by GeorgeFlorian1
Fri Feb 28, 2020 10:22 am
Forum: ESP32 Arduino
Topic: OLIMEX ESP32-EVB-EA won't boot when powered by 5V
Replies: 0
Views: 1482

OLIMEX ESP32-EVB-EA won't boot when powered by 5V

Board: ESP32-EVB-EA Rev.H Platform: PlatformIO Core 4.2.1 (https://postimg.cc/QFhtrwt2] The circuit above is composed of a 220V to 12V PSU and a 12V to 5V switching power supply The measured output is ~5V. I've connected the ESP to a 5V power source. If I boot up the ESP without connecting it to a m...
by GeorgeFlorian1
Fri Feb 21, 2020 10:07 am
Forum: ESP32 Arduino
Topic: Can I use an USB Keyboard with RS232 on ESP32 ?
Replies: 5
Views: 1419

Re: Can I use an USB Keyboard with RS232 on ESP32 ?

find and try PS2 keyboard arduino lib, or find arduino usb host module and library ... https://www.aliexpress.com/wholesale?catId=0&initiative_id=SB_20200220135457&SearchText=usb+host+arduino https://www.google.com/search?client=aff-maxthon-maxthon4&channel=t27&q=usb%20host%20esp32 But why wouldn't...
by GeorgeFlorian1
Thu Feb 20, 2020 8:53 pm
Forum: ESP32 Arduino
Topic: Can I use an USB Keyboard with RS232 on ESP32 ?
Replies: 5
Views: 1419

Re: Can I use an USB Keyboard with RS232 on ESP32 ?

This keyboard AND this usb converter as USB device(slave) Cannot connect to each other https://electronics.stackexchange.com/questions/49140/what-exactly-are-the-differences-between-a-usb-host-and-device Locate the arduino usb host module ... So I can't do anything with that keyboard and any ESP32 ?
by GeorgeFlorian1
Thu Feb 20, 2020 11:19 am
Forum: ESP32 Arduino
Topic: Can I use an USB Keyboard with RS232 on ESP32 ?
Replies: 5
Views: 1419

Can I use an USB Keyboard with RS232 on ESP32 ?

Hello ! I need to implement that keyboard to that ESP32. The keyboard has USB and I found a USB to RS232 converter. Should I try and do that or it will be easier to use a Raspberry ? My ESP board: https://www.olimex.com/Products/IoT/ESP32/ESP32-EVB/open-source-hardware The keyboard: https://www.alie...
by GeorgeFlorian1
Tue Dec 17, 2019 9:22 am
Forum: ESP32 Arduino
Topic: How to send a signal through 2 wires using rmt.h ?
Replies: 5
Views: 1201

Re: How to send a signal through 2 wires using rmt.h ?

Goerge, Oops, I read through that too quickly. Here is another try an transmitting: https://www.codeproject.com/Articles/1250921/Wieganduino-Generate-Wiegand-Codes-with-Arduino I thought it would be necessary to invert the second line from the first. This shows how to wiggle each line in code. Tom ...
by GeorgeFlorian1
Fri Dec 13, 2019 8:56 am
Forum: ESP32 Arduino
Topic: How to send a signal through 2 wires using rmt.h ?
Replies: 5
Views: 1201

Re: How to send a signal through 2 wires using rmt.h ?

Take a look here: https://www.arduinolibraries.info/libraries/yet-another-arduino-wiegand-library In the in file there is a readme that describes the protocol. Maybe the code could be adapted to your project. Tom Meyers This is at the beginning of the readme: # Yet Another Arduino Wiegand Library A...
by GeorgeFlorian1
Thu Dec 12, 2019 2:23 pm
Forum: ESP32 Arduino
Topic: [SOLVED] How to send a signal for a set amount of time ?
Replies: 6
Views: 1141

Re: How to send a signal for a set amount of time ?

I have moved the discussion to a new thread:
viewtopic.php?f=19&t=13503&p=53201#p53201

This can be closed or deleted.

Thank you.
by GeorgeFlorian1
Thu Dec 12, 2019 2:20 pm
Forum: ESP32 Arduino
Topic: How to send a signal through 2 wires using rmt.h ?
Replies: 5
Views: 1201

How to send a signal through 2 wires using rmt.h ?

Board: ESP32-EVB OS: Linux Mint Hello ! For the past week, I have been trying to send this binary number: 01100000101111001011111000 through two wires, emulating the Wiegand Protocol, to a Card Reader. Wiegand Protocol starts with both pins HIGH. When I send a 0, W0 pin is pulled LOW for usually 20-...
by GeorgeFlorian1
Thu Dec 12, 2019 8:51 am
Forum: ESP32 Arduino
Topic: [SOLVED] How to send a signal for a set amount of time ?
Replies: 6
Views: 1141

Re: How to send a signal for a set amount of time ?

No, you can use it for up to 8 pins. Note that you can't start the transaction on multiple pins at *exactly* the same time, but if you don't care about a tenth of an uS or so of delay, it should be fine. That sounds great. There is just one issue. I've literally no idea how to write the code. This ...
by GeorgeFlorian1
Wed Dec 11, 2019 11:04 am
Forum: ESP32 Arduino
Topic: [SOLVED] How to send a signal for a set amount of time ?
Replies: 6
Views: 1141

Re: How to send a signal for a set amount of time ?

What do you think ? You need another delay after bringing back the lines to HIGH ... That is indeed my bad. I have fixed that. Thank you. This is the resulting code that sometimes gets synchronized and sends the signal correctly: void setup() { Serial.begin(115200); pinMode(W0, OUTPUT); pinMode(W1,...

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