MicroPython Forum (Archive)

When I upload the code below to a Wemos D1 mini, using ampy put , the ultrasonic sensor gets false readings from across the room. But when I just run the code on the device, using ampy run . Any idea on why that might be? from hcsr04 import HCSR04 from machine import Pin, Signal import utime sensor ...

You can draw a schematic, even in MS paint (though vector based drawing is much better). A schematic is just a visual representation of the circuit so we can talk about it. It's clearly available, you just haven't produced it yet :) Is the power supply adequate? How are you powering it, and how muc...

you need to check the connections and make sure they correspond correctly to the pin declarations. is sda connected to sda? is that pin declared as sda in the code? etc. post the schematic you are using and confirm you have connected everything according to the schematic if the connection is correc...

It looks like you are correct. Here is what I ran and the results import machine i2c = machine.I2C(scl=machine.Pin(5), sda=machine.Pin(4)) print('Scan i2c bus...') devices = i2c.scan() print(devices) if len(devices) == 0: print("No i2c device !") else: print('i2c devices found:',len(devices)) for de...

Thank you both for steering me in the right direction. I've managed to strip Adafruit's drivers down to the essentials and this is what works for me: I've published the code and usage instructions at https://github.com/mihai-dinculescu/micropython-adafruit-drivers/tree/master/seesaw . Couldn't get ...

Thank you. I've been having a bit of an issue with receiving an ESP-Now message and then sending a text to my phone. Both work separately, but not together. This works fine: wifi = network.WLAN(network.STA_IF) # needs to be STA_IF wifi .active(True) e = espnow.ESPNow() e.init() e.add_peer(mac) while...

Awesomeness! I think everything is working properly now. Here is what I ended up implementing: Check/print the return value from e.send(peer, msg). This will return True if the msg has been acknowledged by the peer and False if not. I forgot about this. Great way to troubleshoot. In particular, it m...

I tried using two ESP32 devices, that are the same, but I have the same issue. It looks like irecv() is timing out at the default 5 minutes, since it's printing msg as 'None'. Every once-in-a-while it will receive a message from the other device. Not very often though. So it can't be that I have an ...

davef wrote: ↑

Tue Aug 17, 2021 10:54 pm

It might be helpful to know what revision chips are used in the ESP32U-01, but for that you need to run a command in Linux using the esptool app. Maybe there is a version for Windows or maybe your IDE will tell you.

It's a ESP32-D0WD-V3 (revision 3).

The sender is an ESP32U-01. I won't be able to use an ESP8266 for both but I'll try an ESP32 for both. I looked up utime.sleep() and it doesn't seem any different from time.sleep() other than it's for MicroPython. Maybe I'm missing something there. Also, why does it need a while loop? Thanks.