Hi,
Just received your board RD-03D but looking at my existing ESP32 VROOM-32D board, I notice the board only 3.3v not v5.
Can you recommend similar board that has Wifi support and is cheap?
Paul, the specs state that the logic level is 3.3V (so the UART etc) so you can connect that direct to your ESP32.
It just needs a 5V to power it. If you your powering your ESP32 from USB then alot of ESP32 dev boards also have a 5V pin that you could use to power the RD-03D. So that may be worth trying.
Most people power their ESP32 boards from USB that provides 5V
I connect my board via USB Power, but output of pin is only 3.3v and no option for 5.
Can you give a link to you ESP32 board ?
So you have/are making your own PCB ? or are you using a premade dev board. nearly every dev board I have seen (not all, but most) have a 5V pin for this exact purpose.
I not not sure, just playing around at this stage.
The module does not have a pin labelled 5V, but there is a pin labelled VIN. This is usually described as the alternative to the USB for a 5V input, But apparently it can be used as a 5V source when USB is used. See here.
Hey @Paul297164,
To expand on what @Jeff105671 has added here, Most dev boards will have a VIN (voltage in) pin that will pass through whatever voltage is given to the USB port.
In most cases, this is 5V, but if you are running the ESP32 from another power source apart from USB, this may change.
Hope this helps!
