Search found 4 matches

by lowtolerance
Mon Feb 15, 2021 2:49 pm
Forum: Showcase
Topic: Small ESP32-S2 dev board for handsoldering
Replies: 2
Views: 504

Re: Small ESP32-S2 dev board for handsoldering

Very nice! I’m working on a couple of esp32-s2-based projects and its astounding how easy (and CHEAP!!) it is to make a custom pcb for these modules. I’m using the new MINI modules for one, and the PCB is only as wide as the module (<17mm), and the BOM for it is less than $2 USD, including the modul...
by lowtolerance
Wed Feb 03, 2021 1:21 am
Forum: Sample Code
Topic: websocket server example
Replies: 2
Views: 373

Re: websocket server example

The error is telling you that the URL you are pointing to <i>is</i> a valid URI — there is something there, but whatever it is, it’s not what the websocket client is looking for. Try taking the URL that the client app is directed to, only with “http://” in place of “ws://“, and maybe you’ll have a b...
by lowtolerance
Fri Jan 15, 2021 12:17 pm
Forum: General Discussion
Topic: Questions regarding ESP32-S2-DevKitM-1
Replies: 3
Views: 491

Re: Questions regarding ESP32-S2-DevKitM-1

As for B, the LED is there to demonstrate how you can use addressable LEDs, not so you can use it as an emergency flashlight. Powering it at 5v is a waste of circuitry for no practical benefit whatsoever.
by lowtolerance
Tue Dec 15, 2020 7:11 pm
Forum: Hardware
Topic: ESP32-S2 - ULP & i2c communication
Replies: 2
Views: 423

Re: ESP32-S2 - ULP & i2c communication

You heard right, you cannot use just any GPIO. scl can be GPIO_0 or GPIO_2, and sda can be GPIO_1 or GPIO_3. You need to use registers RTCIO_SAR_I2C_SCL_SEL and RTCIO_SAR_I2C_SDA_SEL to point to the correct pins. In general, when using the ULP for GPIO access, you need to be using GPIO pins handled ...

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