Search found 46 matches

by MCUism
Mon May 04, 2020 4:57 pm
Forum: Hardware
Topic: Upload code without pressing EN and Boot buttons
Replies: 12
Views: 770

Re: Upload code without pressing EN and Boot buttons

OK, great you have one. You do not need to press the buttons to get it into flash mode. If you do there is something wrong. There are many knock-offs out there that there is a issue with the timing on the GPIO0 signal which forces you do press the buttons. The real legitimate boards that are not ch...
by MCUism
Mon May 04, 2020 12:55 pm
Forum: Hardware
Topic: Upload code without pressing EN and Boot buttons
Replies: 12
Views: 770

Re: Upload code without pressing EN and Boot buttons

Absolutely it will work. Don't you have one of those kits? Or any of the others ones like it? IF not buy one and you will see for yourself. You do not need to push those buttons to set it up for flash mode. I do have one....that's why I've asked will it surely work :lol: . i usually press these but...
by MCUism
Mon May 04, 2020 12:36 pm
Forum: Hardware
Topic: Upload code without pressing EN and Boot buttons
Replies: 12
Views: 770

Re: Upload code without pressing EN and Boot buttons

username wrote:
Mon May 04, 2020 12:27 pm
They have the buttons, but you do not need to use them. The circuit on the board takes care of the EN and GPIO line toggling when you go to flash it.
Oh...Is it? Are you sure? Will that work? Because after implementing I should not have issues with programming.
by MCUism
Mon May 04, 2020 12:22 pm
Forum: Hardware
Topic: Upload code without pressing EN and Boot buttons
Replies: 12
Views: 770

Re: Upload code without pressing EN and Boot buttons

Oh... Then just put the same circuit on the board as the ESP32 DevKitC. Look at the schematic on this page. https://docs.espressif.com/projects/esp-idf/en/latest/esp32/hw-reference/esp32/get-started-devkitc.html#related-documents :D They have used buttons in that schematics. I want without them and...
by MCUism
Mon May 04, 2020 12:08 pm
Forum: Hardware
Topic: Upload code without pressing EN and Boot buttons
Replies: 12
Views: 770

Re: Upload code without pressing EN and Boot buttons

All you need to do it route the following signals to a header of your choice on your PCB. Power, GND, TX, RX, EN and GPIO0. Then you can can just use one of these to program it. https://www.electrodragon.com/product/esp-prog-board-for-esp8266-esp32/ Hi, No I don't need an external board to program....
by MCUism
Mon May 04, 2020 11:33 am
Forum: Hardware
Topic: Upload code without pressing EN and Boot buttons
Replies: 12
Views: 770

Upload code without pressing EN and Boot buttons

Hi guys,

I'm designing a PCB with ESP32 SoC and I want to directly upload the code to the SoC without pressing the EN and Boot buttons as I don't want to have any buttons on my PCB. I would like to know a work around for this task. please help me out what circuitry should I use to do this...!
by MCUism
Sun May 03, 2020 5:59 pm
Forum: Hardware
Topic: Schematic Review (Seems like a problem to me!)
Replies: 5
Views: 557

Re: Schematic Review (Seems like a problem to me!)

The same way you strapped EN. But you wont need the cap. Taken from the data sheet. Annotation 2020-05-03 072917.jpg Hi mikemoy, can you also suggest me what care can I take while routing my RF trace to antenna. I am using this https://www.snapeda.com/parts/2450AT18B100E/Johanson%20Technology/datas...
by MCUism
Sun May 03, 2020 5:28 pm
Forum: Hardware
Topic: PCB Antenna Tuning
Replies: 3
Views: 548

Re: PCB Antenna Tuning

Hey brento,

Not able to see the image you uploaded
by MCUism
Sun May 03, 2020 12:21 pm
Forum: Hardware
Topic: Schematic Review (Seems like a problem to me!)
Replies: 5
Views: 557

Re: Schematic Review (Seems like a problem to me!)

You missed IO0. This is the pin that puts it in bootstrap mode. Hi mikemoy, how should I strap that pin? Should I pull down it? I think i wanna strap both GPIO0 and GPIO2 pulled down. Anyways IO2 is pulled down and IO0 must be pulled down for downloading the code using Rx and Tx? Please do help me ...
by MCUism
Sun May 03, 2020 10:57 am
Forum: Hardware
Topic: Schematic Review (Seems like a problem to me!)
Replies: 5
Views: 557

Schematic Review (Seems like a problem to me!)

forum_upload.PNG
forum_upload.PNG (105.39 KiB) Viewed 557 times
Hi team,

I have attached my schematic here. I sense some problems with my strapping pins. I want to directly upload the code from the Rx and Tx pins. Som for this did I configure my strap pins correctly? Shall I proceed with my Layout?

https://photos.app.goo.gl/ZQi6PmXs7GNxj5Rz8