Search found 22 matches

by tachin
Fri Jan 02, 2026 6:42 pm
Forum: General Discussion
Topic: Investigating delta OTA update via LoRa
Replies: 2
Views: 824

Re: Investigating delta OTA update via LoRa


Is that 26KB difference between the binaries , or is 26KB the size of the resulting (compressed) patch file?

I'm not doing yet the "patcher" , I am in the process of checking whether it is a viable option.

There are 26000 differents bytes, some of them in a row but most of them are isolated and ...
by tachin
Thu Jan 01, 2026 7:46 pm
Forum: General Discussion
Topic: Investigating delta OTA update via LoRa
Replies: 2
Views: 824

Investigating delta OTA update via LoRa

I was thinking about building a custom delta update system for OTA via LoRa (1-5 Kbps), super optimized for patch size, sending absolutely the bare minimum necessary.

I just did a test with a basic firmware that takes up 280KB.


void setup() {
Serial.begin(115200);
Serial.println("Hello from ...
by tachin
Thu Dec 26, 2024 5:26 pm
Forum: Hardware
Topic: ESP32 Delay circuit for EN pin
Replies: 3
Views: 2065

Re: ESP32 Delay circuit for EN pin


you could use a Reset Supervisor for the EN pin. They also come in through hole versions as well.

https://www.digikey.com/en/products/detail/texas-instruments/TLV803EF29DBZR/14004302


Thanks for the recommendation, I will take note. Unfortunately I already have the board finished and have no ...
by tachin
Thu Dec 26, 2024 1:54 pm
Forum: Hardware
Topic: ESP32 Delay circuit for EN pin
Replies: 3
Views: 2065

ESP32 Delay circuit for EN pin

Hi there,
I have some problems with the power supply (which I can't change) which is quite weak at the first start-up.

ESP32 often resets several times at startup until the power supply stabilises. I have measured that by adding 10k/20uF for EN pin, the ESP32 startup/power demand is delayed by ...
by tachin
Sun Sep 08, 2024 8:39 pm
Forum: Hardware
Topic: ESP lowest consumption module recommendation
Replies: 7
Views: 12030

Re: ESP lowest consumption module recommendation


If you haven't already, check out light sleep mode; there's also an "automatic light sleep" option with which light-sleeping can work pretty much invisibly in the "background" whenever the chip has nothing to do for a few dozen milliseconds or longer.


Thanks for that tip, I was no aware about ...
by tachin
Tue Sep 03, 2024 3:28 pm
Forum: Hardware
Topic: ESP lowest consumption module recommendation
Replies: 7
Views: 12030

Re: ESP lowest consumption module recommendation


Using the RISC-V ULP of an ESP32-S3 may be worth looking into.



Thanks for the info. I didn't know that feature, however as I'm using a general purpose code (spi, great memory arrays, i2c, gpios, loops etc..) not sure if ULP can handle that.


ESP32-S2 is the most suitable candidate ...
by tachin
Mon Sep 02, 2024 11:41 am
Forum: Hardware
Topic: ESP lowest consumption module recommendation
Replies: 7
Views: 12030

ESP lowest consumption module recommendation

Hi There

I have to do a low power project (cpu always running, don't care sleep) with 15 GPIO and I want to keep using ESP as I love these chips and I am familiar with them. the project it's currently working on a esp32-WROOM-32E @ 10 Mhz , drawing (just the wroom module) ~13mA while running the ...
by tachin
Mon Mar 18, 2024 8:54 pm
Forum: General Discussion
Topic: Best practices for USB Vendor / Product ID
Replies: 6
Views: 6364

Re: Best practices for USB Vendor / Product ID

I'm the guy who hands out the PIDs there. If you make any number (>=1) of devices you give away or sell or whatever, as long as you're willing to answer the questions in the readme of that repo, you'll get a PID.
Understood!! :D
Thanks
by tachin
Sun Mar 17, 2024 12:45 pm
Forum: General Discussion
Topic: Best practices for USB Vendor / Product ID
Replies: 6
Views: 6364

Re: Best practices for USB Vendor / Product ID

Not sure if I can bother them for a very low quantity product, that's why I was asking if the serial number could be a solution :D
by tachin
Mon Mar 11, 2024 10:46 am
Forum: General Discussion
Topic: Best practices for USB Vendor / Product ID
Replies: 6
Views: 6364

Re: Best practices for USB Vendor / Product ID

Yeah, I already mention that link in my original post, do you mean to write to Espressif to create a new PID?

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