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by rafaelvf
Sun Sep 26, 2021 5:22 pm
Forum: ESP32 Arduino
Topic: Internal pullup resistor and DS18B20 (Digital Temperature Sensor): is it possible?
Replies: 2
Views: 5954

Internal pullup resistor and DS18B20 (Digital Temperature Sensor): is it possible?

Hi,
I have successfully tested a DS18B20 (Digital Temperature Sensor) with various ESP32 development boards.

I have always used an external pullup resistor of 4.7 kOhm. I have tried to replace it with the internal pullup resistor of the ESP32 without success.

I have used the instruction ...
by rafaelvf
Tue Sep 07, 2021 2:20 pm
Forum: ESP32 Arduino
Topic: Unable to upload code: Invalid head of packet (0x00)
Replies: 0
Views: 1923

Unable to upload code: Invalid head of packet (0x00)

Hi,

I'm using two LilyGO T-Beam v1.1 boards. After some time of working correctly, in one of them I cannot upload code.

The Arduino IDE is able to connect whith this board and retrieve its characteristics. Usually the process of writting code starts but never ends properly. Every time I get the ...

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