Search found 447 matches

by mikemoy
Tue May 29, 2018 4:56 pm
Forum: General Discussion
Topic: Error when flashing gpio example
Replies: 3
Views: 1353

Re: Error when flashing gpio example

I just tried this example using mingw32, compiled and ran just fine for me.
by mikemoy
Mon May 28, 2018 4:07 pm
Forum: General Discussion
Topic: What would you like to see in The Next Chip?
Replies: 347
Views: 126511

Re: What would you like to see in The Next Chip?

The PSRAM is not the best option, since it uses up the precious SPI bus for flash reads.
Maybe, dedicated pads for PSRAM.
by mikemoy
Sat May 26, 2018 7:11 pm
Forum: General Discussion
Topic: Wrong ULP Consumption ?
Replies: 9
Views: 3186

Re: Wrong ULP Consumption ?

Never hurts to ask. What are you powering the ESP32 with, and what are you measuring the current with.
by mikemoy
Sat May 26, 2018 3:49 am
Forum: Hardware
Topic: Current Limits
Replies: 8
Views: 10990

Re: Current Limits

40ma, is very high for an I/O pin. The data sheet does not specify what the total current capacity is. In other words, How may pins sourcing @ 40ma before you exceeded the current for the Vin pin.
by mikemoy
Sun May 20, 2018 11:28 pm
Forum: General Discussion
Topic: More LAN8720 IP issues
Replies: 9
Views: 4754

Re: More LAN8720 IP issues

I have found some boards present the same issues you talk about. The main problem is sending the 50MHZ signal over these long wires. I found that doing the following eliminated all my issues. Hopefully the wires you have come in a ribbon cable style like this, which you peel each one off. WIN_201805...
by mikemoy
Thu May 17, 2018 11:30 am
Forum: General Discussion
Topic: More LAN8720 IP issues
Replies: 9
Views: 4754

Re: More LAN8720 IP issues

Just a quick question to confirm. I don't see how you are enabling / disabling the 50mhz clock on the Ethernet board. Are you really following the instructions from https://sautter.com/blog/ethernet-on-es ... g-lan8720/ You board should have a jumper from the OSC en pin to the NC pin on the header, ...
by mikemoy
Thu May 17, 2018 11:12 am
Forum: Showcase
Topic: New ESP32-WROVER Ethernet Board
Replies: 34
Views: 23826

Re: New ESP32-WROVER Ethernet Board

I agree that the cost of the RJ45 is high. However it has a few features that I like in it over others I have looked at. such as filtering on the POE lines, and I want to keep the size down, so having the transformer built in is a plus as well. As for the POE module. I am still keeping the original ...
by mikemoy
Wed May 16, 2018 12:22 pm
Forum: Showcase
Topic: New ESP32-WROVER Ethernet Board
Replies: 34
Views: 23826

Re: New ESP32-WROVER Ethernet Board

I started on that design last week ;) I found a few Rj45's that have the magnetics and access to the power pins. https://www.digikey.com/product-detail/en/pulse-electronics-network/JKM-0201NL/553-3218-ND/5800452 I also added this POE module to the design. It can be added on top of the module for tho...
by mikemoy
Wed May 16, 2018 1:58 am
Forum: General Discussion
Topic: Sudden Power Off of ESP32
Replies: 5
Views: 1844

Re: Sudden Power Off of ESP32

Not sure I follow what you are asking. This is not a Linux type system where it would need a proper shutdown.
It's like any other micro. Sudden loss of power is not an issue.
by mikemoy
Wed May 16, 2018 1:54 am
Forum: General Discussion
Topic: Suitable JTAG for ESP32
Replies: 5
Views: 1621

Re: Suitable JTAG for ESP32

Personally, I am not a JTAG fan, never needed more than a simple printf.
That being said, I can tell you that the following does work just fine for the ESP32.
https://www.olimex.com/Products/ARM/JTAG/ARM-USB-OCD-H/

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