Search found 34 matches

by pipi61
Mon Mar 16, 2020 6:32 pm
Forum: ESP32 Arduino
Topic: Auto Upload Circuit?
Replies: 4
Views: 2043

Re: Auto Upload Circuit?

Yes, directly. I use this ch340 adapter https://www.aliexpress.com/item/32789451759.html?spm=a2g0s.9042311.0.0.27424c4dl0bJvQ This adapter connector does not have a DTR signal but a wire soldered directly to the ch340 pin, The power jumper select 3,3V position on adapter. The usb 5V power signal is ...
by pipi61
Fri Mar 13, 2020 6:40 pm
Forum: ESP32 Arduino
Topic: ESP32 cam photo
Replies: 1
Views: 3641

Re: ESP32 cam photo

Hi!
The takeNewPhoto variables don't setting never.
by pipi61
Fri Mar 13, 2020 6:32 pm
Forum: ESP32 Arduino
Topic: Auto Upload Circuit?
Replies: 4
Views: 2043

Re: Auto Upload Circuit?

Use another type usb/serial converter/adapter. Before buy check connector pinout, or chip type on adapter. In adapter if not wire the required signal to connector, then wire directly from chip pin. Check power/gpio voltage level on adapter, and select 3V3 type. I use simple wiring, RX,TX, GND, RTS t...
by pipi61
Fri Feb 21, 2020 10:16 am
Forum: ESP32 Arduino
Topic: Can I use an USB Keyboard with RS232 on ESP32 ?
Replies: 5
Views: 1591

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

Communication only usb host between usb device.
Two usb devices do not communicate with each other
by pipi61
Thu Feb 20, 2020 9:57 pm
Forum: ESP32 Arduino
Topic: Can I use an USB Keyboard with RS232 on ESP32 ?
Replies: 5
Views: 1591

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?ca ... st+arduino
https://www.google.com/search?client=af ... st%20esp32
by pipi61
Thu Feb 20, 2020 5:38 pm
Forum: ESP32 Arduino
Topic: Can I use an USB Keyboard with RS232 on ESP32 ?
Replies: 5
Views: 1591

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/q ... and-device
Locate the arduino usb host module ...
by pipi61
Sat Feb 15, 2020 12:26 am
Forum: ESP32 Arduino
Topic: non stop reboot loop keeps usb locked
Replies: 2
Views: 997

Re: non stop reboot loop keeps usb locked

check gpio pins
https://github.com/espressif/esptool/wi ... -Selection
if remove any connected hardware then programming too bad?

If use serial monitor when programming, then serial monitor lock the serial port, and esptool can't connect to this serial port
by pipi61
Mon Jan 27, 2020 5:23 pm
Forum: ESP32 Arduino
Topic: ESP32-cam with ds1302?
Replies: 5
Views: 2654

Re: ESP32-cam with ds1302?

If you do not use the sd card, then this pins available
Check the esp32 schematic...
by pipi61
Sat Jan 25, 2020 1:04 am
Forum: ESP32 Arduino
Topic: ESP32 powered by 2 x 1.5v Lithium Batteries?
Replies: 3
Views: 902

Re: ESP32 powered by 2 x 1.5v Lithium Batteries?

Try the schottky diode between the battery and esp