I am using a D1 Mini [ ESP-8266-12F micro-USB port ] with a USB GPS ‘mouse’ plugged into the on-board USB port to create a small stand-alone GPS-over-Wi-Fi unit. Software is loaded to send the GPS serial data via Wi-Fi to an MQTT Broker for use with Node-Red.
5 volt power was applied to the D1 via the 5v and GND pins and I was hoping that the 5 volts would feed back to the USB connector to power the GPS unit which takes 85mA at 5 volts. However, it didn’t like it and the D1 failed!
Is the 5 volt pin on the main board connected directly to the 5v pin on the USB connector ?
Any guidance will be gratefully received
Powering USB connected peripheral from 5 volt on-board pins
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Re: Powering USB connected peripheral from 5 volt on-board pins
That's not going to work; that board has no way to be an USB host. It might be possible with an ESP32-S2 or ESP32-S3; those have an USB-OTG peripheral.
Re: Powering USB connected peripheral from 5 volt on-board pins
Thanks for that, I wasn't aware the USB port on the D1 was for power and programming only. My fault for not researching it properly!
I shall break out the GPS USB lines and assign the signals to the appropriate ports on the D1 and will power both devices conventionally.
Many thanks for your kind assistance!
I shall break out the GPS USB lines and assign the signals to the appropriate ports on the D1 and will power both devices conventionally.
Many thanks for your kind assistance!
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