"Hello everyone,
I'm working on a project using the Portenta Machine Control board, and I need to connect sensors that require either 5V or 3.3V power supply. However, the Portenta board only provides a 24V output. I tried using an external power source to supply the sensors, but it didn't work.
Is there a solution to this issue apart from using a voltage regulator? I would appreciate any suggestions or alternative approaches to power my sensors properly.
Thank you!"
Welcome to the forum
In what way did it not work ?
Please post a schematic of the circuit that you tried
Actually, when I connect a DHT11 sensor, I don't receive any readings even though I'm sure the wiring and code are correct, so I think the sensor is not powered. My question is, what power source can I use on this board to directly supply the sensor with 5V? Thank you in advance
Hi @ayas55, Have you tried using the USB A socket, I tried powering a DS18B20 from the PMC using a USB cable stripped down to the individual cores. I got 5V from it but could not read the sensor readings as it is my understanding it is not supported on the board. For my use case I swapped to a PT100 which is fully supported. As @UKHeliBob suggested a wiring diagram would help in diagnosing your problem. What pins are you trying to read the serial output from the DHT11 on?
if you supply the sensor with 5V the digital communication between the PMC and the sensor should work? has anyone been able to do this?
Can you back that up with a wiring schematic? I tried powering a DS18B20 with 5V but I was unable to read the digital output using the PMC.
Without an annotated schematic I cannot help.