Hello ESP8266 on D1 mini board with tasmot uploaded. I have configured GPIO outputs: 0,2,4,5 as PWM, after physically connecting GPIO 2 to the transistor gate the chip does not connect to WiFi. What could be wrong? I am very much asking for help.

How is the gate of this transistor polarised?

The GPIO 2 input at the time of reset should have level H (realised via resistor R11 on the board). If the transistor gate is polarised via an additional resistor with GND, this situation is not guaranteed.

As it turned out GPIO2 is TXD1. I connected this transistor under GPIO13 and it worked.

[Solved] ESP8266 D1 mini from Tasmota fails to connect to WiFi when GPIO is connected

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#1 20871069 21 Dec 2023 10:57

opaaa opaaa

Level 4

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Post #1
20871069 21 Dec 2023 10:57

Hello
ESP8266 on D1 mini board with tasmot uploaded.
I have configured GPIO outputs: 0,2,4,5 as PWM, after physically connecting GPIO 2 to the transistor gate the chip does not connect to WiFi. What could be wrong? I am very much asking for help.
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#2 20871095 21 Dec 2023 11:29

khoam khoam

Level 42

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Post #2
20871095 21 Dec 2023 11:29

opaaa wrote:
after physically connecting GPIO 2 to the gate of the transistor, the circuit does not connect to the WiF
How is the gate of this transistor polarised?
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#3 20871129 21 Dec 2023 11:54

inot inot

Level 37

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Post #3
20871129 21 Dec 2023 11:54

The GPIO 2 input at the time of reset should have level H (realised via resistor R11 on the board). If the transistor gate is polarised via an additional resistor with GND, this situation is not guaranteed.
#4 20871363 21 Dec 2023 14:51

opaaa opaaa

Level 4

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Post #4
20871363 21 Dec 2023 14:51

As it turned out GPIO2 is TXD1. I connected this transistor under GPIO13 and it worked.
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[Solved] ESP8266 D1 mini from Tasmota fails to connect to WiFi when GPIO is connected

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