Search found 57 matches

by Vader_Mester
Wed Feb 21, 2018 8:04 am
Forum: Showcase
Topic: ESP32 TFT display library
Replies: 41
Views: 13637

Re: ESP32 TFT display library

The limitation to SPI clock is the LCD controller itself. Normally the maximum SPI clock is 40Mhz, 80Mhz is too much and will not meet the timing requirements of the LCD controllers. You can use DMA with the SPI. I'm currently trying to figure that one out. I'm gonna need 4 DMA buffers, 2 small buff...
by Vader_Mester
Mon Feb 19, 2018 8:21 am
Forum: General Discussion
Topic: USB on ESP32 proof of concept @espressif
Replies: 2
Views: 157

Re: USB on ESP32 proof of concept @espressif

This sounds very interesting! Looking forward to see the code.
by Vader_Mester
Mon Feb 12, 2018 8:56 pm
Forum: General Discussion
Topic: Problem with parallel GPIO pins and NeoPixels
Replies: 7
Views: 324

Re: Problem with parallel GPIO pins and NeoPixels

Veeeeery nice! If you want more consistency, you can use the ULP co-processor in the ESP32. I know it sound crazy enough, but it can be very good, to keep the waveforms and cycle counts consistent. Since ULP is more of a Real-Time controller than the ESP cores (because FreeRTOS is running), this wou...
by Vader_Mester
Fri Feb 09, 2018 9:40 am
Forum: General Discussion
Topic: Lolin32 become very hot when connected to usb port
Replies: 2
Views: 110

Re: Lolin32 become very hot when connected to usb port

Do you have anything connected to it? Or just the bare module. I suggest to disconnect the module, wait for it to cool down, and plug it back in. Use your fingers (veeeeeery carefully) to find where the heat is coming from. You could also look round the board, and check for accidental shorts, and so...
by Vader_Mester
Fri Feb 09, 2018 9:22 am
Forum: General Discussion
Topic: Proant 440 antenna with PICO-D4 - ground plane
Replies: 7
Views: 274

Re: Proant 440 antenna with PICO-D4 - ground plane

It depends... A chip antenna in profile is smaller, but it needs to have a proper ground plane. But very sensitive to GND plane design placement (price of beign small) Also the bandwidths are rather small, so... needs a lot of research. It has pros though with the PICO, like no need for matching cir...
by Vader_Mester
Fri Feb 09, 2018 8:02 am
Forum: General Discussion
Topic: Proant 440 antenna with PICO-D4 - ground plane
Replies: 7
Views: 274

Re: Proant 440 antenna with PICO-D4 - ground plane

Yeah, this was the idea. I studied it a lot, and I wanted to design according to this, because it is given, but now I realized, I have much much worse space requirements than before... Additionally the stuff will be inside a smart bulb, and since it's not a low profile antenna, I'm worried it's gonn...
by Vader_Mester
Wed Feb 07, 2018 9:34 am
Forum: General Discussion
Topic: one binary for wroom and wrover ?
Replies: 7
Views: 291

Re: one binary for wroom and wrover ?

I need the same thing, so I could have easier management for OTA updates.

Vader [BEN]
by Vader_Mester
Wed Feb 07, 2018 8:41 am
Forum: General Discussion
Topic: Will Mouser Carry ESP32-PICO-D4 ICs?
Replies: 2
Views: 164

Re: Will Mouser Carry ESP32-PICO-D4 ICs?

If you need it, check out Analoglamb. Here is the page of all ESP32 boards and chips, they have: https://www.analoglamb.com/product-category/wireless-modules/esp32-modules/ As you can see, they have the ESP32 chip, as well as the PICO-D4. Note: Last week I ordered 1pc PICO and an ALBWROVER module fr...