These pins can be used as GPIOs.
It seems that the writer of the datasheet of ESP32-PICO-D4 forgot adding GPIO function to pin description
Search found 7 matches
- Thu Aug 27, 2020 4:12 am
- Forum: Hardware
- Topic: Is GPIO different in ESP32-PICO-D4?
- Replies: 1
- Views: 3219
- Tue Mar 12, 2019 3:31 am
- Forum: Hardware
- Topic: External supply
- Replies: 3
- Views: 5104
Re: External supply
Using a efficient buck IC will help a lot. And what task you run may have a big impact for the battery life. You can measure the power consumption and the battery life by yourself. I think it's not too hard to operate.
- Tue Mar 12, 2019 3:01 am
- Forum: Hardware
- Topic: Issues flashing brand new ESP32 Module
- Replies: 3
- Views: 6473
Re: Issues flashing brand new ESP32 Module
GPIO2 should be low, when booting ESP32 in UART mode. Please check this point first.
- Wed Mar 06, 2019 6:44 am
- Forum: Hardware
- Topic: Cleaning ESP-Wroom32 Module
- Replies: 1
- Views: 4028
Re: Cleaning ESP-Wroom32 Module
I think the link below can answer your question:
https://www.instructables.com/id/Cleaning-up-your-PCB/
https://www.instructables.com/id/Cleaning-up-your-PCB/
- Mon Mar 04, 2019 7:05 am
- Forum: Hardware
- Topic: ESP32 WROOM32 on USB + Ext 5V on Vin
- Replies: 4
- Views: 17430
Re: ESP32 WROOM32 on USB + Ext 5V on Vin
if you connect EXT 5V and USB VBUS directly, there will be current flowing between EXT 5V and USB, since the voltage levels of these two power supply may be different(e.g. EXT 5V is 5.1V, while USB VBUS is 4.8V). And this current may damage either EXT 5V or USB. You can add a diode for each the powe...
- Wed Feb 27, 2019 3:27 am
- Forum: General Discussion
- Topic: GPIO16 issue of ESP WROOM32
- Replies: 13
- Views: 16457
Re: GPIO16 issue of ESP WROOM32
Hi jadhavashitoshj48,
For the relay drive circuit,
1. try to add a flywheel diode across the coil
2. try to add a RC Snubber between NO and COM
see more infomation here: https://www.electronics-tutorials.ws/bl ... rcuit.html
For the relay drive circuit,
1. try to add a flywheel diode across the coil
2. try to add a RC Snubber between NO and COM
see more infomation here: https://www.electronics-tutorials.ws/bl ... rcuit.html
- Mon Feb 25, 2019 12:05 pm
- Forum: General Discussion
- Topic: GPIO16 issue of ESP WROOM32
- Replies: 13
- Views: 16457
Re: GPIO16 issue of ESP WROOM32
I think the schematic is OK, and you may check your code with respect to the GPIO init. You can post the code if you like. Also the GPIO may suffer noises from other part of the board. In this situation a larger value of the capacitor will help to solve the problem, e.g. 1uF.