Search found 50 matches

by bobolink
Wed Feb 03, 2021 12:50 pm
Forum: General Discussion
Topic: BLE low power status
Replies: 8
Views: 6132

Re: BLE low power status

This guy gets the best battery numbers. His ESP32 “Trig Board” spends its time off and is triggered on (by a RTC or sensor) sends a message, then turns off.
https://www.tindie.com/products/kdcircu ... -platform/
by bobolink
Sat Jan 23, 2021 12:50 pm
Forum: General Discussion
Topic: ESP32 was ahead of its time
Replies: 3
Views: 534

ESP32 was ahead of its time

The internet is buzzing over some new silicon in a MCU from the Raspberry Pi foundation.
But this only emphasizes how far ahead the ESP32 was years ago. And may still be. Really. The M0+
Not perfect. The ADC and in-circuit debugging are troublesome.
But it has a radio in it!
:D
by bobolink
Wed Jan 20, 2021 1:11 pm
Forum: General Discussion
Topic: Get BLE UUID for iOS pairing
Replies: 12
Views: 6417

Re: Get BLE UUID for iOS pairing

So, as per my understanding, that UUID is generated by iOS based on some hardware property of the BLE device (e.g. MAC address).
Probably not. The point is how it was derived is unknowable and probably not deterministic.
by bobolink
Sat Jan 16, 2021 12:41 pm
Forum: General Discussion
Topic: Get BLE UUID for iOS pairing
Replies: 12
Views: 6417

Re: Get BLE UUID for iOS pairing

16 bit UUIDs are standardized and published by the Bluetooth SIG. So they are known before-hand. They deal with measurements of health, time, temperatures, velocity, etc. Standard stuff useful for everybody. Nobody could publish all the 32-bit UUIDs. There are more of them than there are stars in th...
by bobolink
Thu Jan 14, 2021 1:20 pm
Forum: General Discussion
Topic: Building on Mac OS Big Sur
Replies: 2
Views: 421

Re: Building on Mac OS Big Sur

OSX Catalina was the last version I got to work.
Big Sur is locked down to the point of being pretty useless for our tool chains/apps.
I Dual boot.
by bobolink
Sat Jan 09, 2021 9:02 pm
Forum: ESP32 Arduino
Topic: Reducing memory usage when using BLE
Replies: 4
Views: 670

Re: Reducing memory usage when using BLE

Ooooops.
Some Callback processing causes a crash.
Stack size somewhere in Arduino version needs increasing I guess.
The troubleshooting costs might exceed the benefits.
:shock:
by bobolink
Sat Jan 09, 2021 5:01 pm
Forum: ESP32 Arduino
Topic: Reducing memory usage when using BLE
Replies: 4
Views: 670

Re: Reducing memory usage when using BLE

Thanks. I completely missed NimBLE. I saved about 6% program memory. Using BlueDroid Sketch uses 1095047 bytes (16%) of program storage space. Maximum is 6553600 bytes. NimBLE Sketch uses 656243 bytes (10%) of program storage space. Maximum is 6553600 bytes. Notes: If you are using the Arduino re-fa...
by bobolink
Fri Jan 01, 2021 12:13 pm
Forum: General Discussion
Topic: ESP32S2
Replies: 5
Views: 843

Re: ESP32S2

A google search turned up this 90+ projects summary.
I haven’t verified everything but I think they have a good reputation.
https://randomnerdtutorials.com/projects-esp32/
by bobolink
Sat Oct 31, 2020 10:53 am
Forum: Showcase
Topic: ESP32-S2 ESP32-S3 engineering usb dongle "esp32-sx-stickley"
Replies: 1
Views: 23831

Re: ESP32-S2 ESP32-S3 engineering usb dongle "esp32-sx-stickley"

but also there is the same usb engineering sample to the maker market with an ESP32-S3, which support Wifi and Bluetooth and is based on the ESP32-S3-Mini serie's.
Can’t wait for any news on S3—mini or maxi
;)
by bobolink
Sat Aug 22, 2020 11:21 am
Forum: ESP32 Arduino
Topic: Best Frequency Meter ever made with ESP32 - awesome!
Replies: 18
Views: 4891

Re: Best Frequency Meter ever made with ESP32 - awesome!

Thank you for all your work on this.

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