Search found 11 matches

by digitalblur
Sat Jan 30, 2021 6:41 am
Forum: General Discussion and Questions
Topic: Sending data from mobile device to micropython device over bluetooth
Replies: 9
Views: 961

Re: Sending data from mobile device to micropython device over bluetooth

If you want to send configuration data then I suspect a UART (or L2CAP) are overkill. You can define a characteristic that you can read/write your configuration data from/to. I've seen people do this with packed binary data, or json blobs, etc. If your configuration is really huge (like kilobytes) ...
by digitalblur
Tue Dec 29, 2020 4:09 am
Forum: General Discussion and Questions
Topic: Sending data from mobile device to micropython device over bluetooth
Replies: 9
Views: 961

Re: Sending data from mobile device to micropython device over bluetooth

Thanks mattyt, I think this makes sense. Since it uses Bluetooth standards a generic Bluetooth app such as nRF Connect should be able to utilize the L2Cap feature and send/receive data to the device, correct? Im not super fluent with Bluetooth functionality but I am interested in trying to do this t...
by digitalblur
Sun Dec 27, 2020 8:54 pm
Forum: General Discussion and Questions
Topic: Sending data from mobile device to micropython device over bluetooth
Replies: 9
Views: 961

Re: Sending data from mobile device to micropython device over bluetooth

I want to use my mobile to configure the software I have installed on the ESP device. For example, change wifi settings, change sleep time configuration, enable/disable software features, etc... Is Bluetooth UART the only option? I have UART working to send data but I was told there is a non Bluetoo...
by digitalblur
Sun Dec 27, 2020 6:39 pm
Forum: General Discussion and Questions
Topic: Sending data from mobile device to micropython device over bluetooth
Replies: 9
Views: 961

Re: Sending data from mobile device to micropython device over bluetooth

Yes Im using the dfrobot beetle esp32 here: https://www.dfrobot.com/product-1798.html

Bluetooth Protocols supported: BR/EDR/BLE standard of Bluetooth v4.2.

Is sending data over UART the only option? I only see an example for UART.

thanks
by digitalblur
Fri Dec 25, 2020 10:48 pm
Forum: General Discussion and Questions
Topic: Sending data from mobile device to micropython device over bluetooth
Replies: 9
Views: 961

Sending data from mobile device to micropython device over bluetooth

Hi, I am trying to understand the options for sending data to a micropython device over bluetooth from a mobile device. I want to send configuration data to this device from a mobile phone. I have the UART example working but is this the only option or is there another non-UART option? Thanks in adv...
by digitalblur
Fri Dec 25, 2020 9:40 pm
Forum: ESP32 boards
Topic: ESP32 Wifi connection/distance issues
Replies: 13
Views: 1855

Re: ESP32 Wifi connection/distance issues

I finally figured this out, Df Robot beetle esp32 version 1 has this issue with wifi distance, they have a version 2 that works now.

Thanks for all the suggestions and help.
by digitalblur
Fri Nov 20, 2020 5:57 am
Forum: ESP32 boards
Topic: ESP32 Wifi connection/distance issues
Replies: 13
Views: 1855

Re: ESP32 Wifi connection/distance issues

Hi davef, Im using the Cornet handheld unit here, its a basic RF strength meter: https://radmeters.com/Cornet-ED78S.html The PCB is directly underneath the antenna. Im not sure if theres copper on the PCB in that area. I'm going to try to carve away the PCB underneath the antenna and see if that hel...
by digitalblur
Thu Nov 19, 2020 5:45 am
Forum: ESP32 boards
Topic: ESP32 Wifi connection/distance issues
Replies: 13
Views: 1855

Re: ESP32 Wifi connection/distance issues

Hi davef, Thanks for taking a look. Here's the schematic link for the dfrobot module: https://github.com/Strictus/DFRobot/raw/master/DFR0575/%5BDFR0575%5D(V1.0)-SCH.PDF And here's a picture of the module with the PCB antenna. The module sits on top of another PCB that covers the underneath of the of...
by digitalblur
Wed Nov 18, 2020 7:17 am
Forum: ESP32 boards
Topic: ESP32 Wifi connection/distance issues
Replies: 13
Views: 1855

Re: ESP32 Wifi connection/distance issues

Thanks for your response. I've done some additional troubleshooting. I added the micropython firmware to another module (adafruit feather esp32), deployed the code to the module and this one does not have any wifi connection issues. It consistently connects to my wifi at a good distance. I also test...
by digitalblur
Tue Nov 17, 2020 6:06 am
Forum: ESP32 boards
Topic: ESP32 Wifi connection/distance issues
Replies: 13
Views: 1855

Re: ESP32 Wifi connection/distance issues

Thanks for the suggestion. I tried adding a 12" alligator clip wire to the ground and didn't have a noticeable effect. Also tried attaching a large piece of aluminum foil to ground and also did not seem to help. Any thoughts on why just connecting to the serial console would make this work? Literall...