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#81
ESP32 / Re: ESPHome issue with UART
Last post by ju - October 03, 2025, 05:52:17 PMThanks for the suggestion!
Yes, I've used esp32-gateway as a board config, with esp-idf as a framework.
For a moment there, I thought you had saved me! On my first attempt I could see *something* on the UART RX, garbled noise, but something!
But upon further inspection, it was just a bad solder joint causing intermittent connection.
Reseating a resoldering them got me back to my initial issue: I can TX, I have no idea if the other end receives anything, and I do not RX anything... :-/
Yes, I've used esp32-gateway as a board config, with esp-idf as a framework.
For a moment there, I thought you had saved me! On my first attempt I could see *something* on the UART RX, garbled noise, but something!
But upon further inspection, it was just a bad solder joint causing intermittent connection.
Reseating a resoldering them got me back to my initial issue: I can TX, I have no idea if the other end receives anything, and I do not RX anything... :-/
#82
ESP32 / Re: ESPHome issue with UART
Last post by LubOlimex - October 03, 2025, 04:48:30 PMTry with GPIO16 and GPIO32, pins #11 and #13 from CON1. Make sure to define them in the code for UART operation.
Did you use the esp32-gateway for board config?
Did you use the esp32-gateway for board config?
#83
ESP32 / Nominal/max forward current of...
Last post by 981380 - October 03, 2025, 11:32:15 AMIs there a datasheet for the SSR-DIN-10A-480VAC or at least what is the nominal and max forward current for the trigger?
Sorry, couldn't find a more suitable forum topic area.
Sorry, couldn't find a more suitable forum topic area.
#84
ESP32 / ESPHome issue with UART
Last post by ju - October 03, 2025, 11:26:32 AMHi folks!
So I've been scratching my head a lot the past day or so, maybe someone here can help me out!
I have a working ESPHome project running on an Olimex ESP32-POE-16MB Rev. L1, I don't need POE for this, nor do I need the Ext connector, so I decided to try to move the project to an Olimex ESP32-Gateway-EA Rev. I
I don't use Ethernet on either board.
Since I changed boards, I cannot get UART to work at all.
I used GPIO13 for TX and GPIO5 for RX on the ESP32-POE without issues.
On the ESP32-Gateway, I've so far tried GPIO16&17, GPIO12&13, GPIO4&13: I don't get any response from UART anywhere.
I've used the same cable for both boards, and now switched back to the ESP32-POE, still the same cable, and everything still works on that board.
Is there something I need to do to make UART work on the ESP32-Gateway?
Thanks a lot!
So I've been scratching my head a lot the past day or so, maybe someone here can help me out!
I have a working ESPHome project running on an Olimex ESP32-POE-16MB Rev. L1, I don't need POE for this, nor do I need the Ext connector, so I decided to try to move the project to an Olimex ESP32-Gateway-EA Rev. I
I don't use Ethernet on either board.
Since I changed boards, I cannot get UART to work at all.
I used GPIO13 for TX and GPIO5 for RX on the ESP32-POE without issues.
On the ESP32-Gateway, I've so far tried GPIO16&17, GPIO12&13, GPIO4&13: I don't get any response from UART anywhere.
I've used the same cable for both boards, and now switched back to the ESP32-POE, still the same cable, and everything still works on that board.
Is there something I need to do to make UART work on the ESP32-Gateway?
Thanks a lot!
#85
New Products release / Join our Special Creative Even...
Last post by olimex - October 02, 2025, 11:36:40 AMJoin our Special Creative Event This Saturday from 14.00-16.00! We will have Soldering party and make art with scrapped electronic components. https://olimex.wordpress.com/2025/10/02/join-our-special-creative-event-this-saturday-we-will-have-soldering-party-and-make-art-with-scrapped-electronic-components/ #soldering #art #plovdiv #olimex
#86
ESP32 / Re: ESP32-PoE-ISO how to set m...
Last post by chrismacp - September 28, 2025, 09:49:24 PMI'd really like to change the mac address on the ethernet interface as well. Looks like it's not possible unless you follow your burn in instructions above. I was hoping it didn't come to that.
Looks like support for changing the mac through software is only supported for the WIFI interfaces now
Looks like support for changing the mac through software is only supported for the WIFI interfaces now
#87
New Products release / Re: RP2350-PICO2-BB48
Last post by olimex - September 26, 2025, 01:55:54 PMThe distributors decide to stock on their own, the more request they get from potential customers the faster they decide to stock 
#88
NXP / Re: How to setup LPC2378-STK a...
Last post by LubOlimex - September 24, 2025, 08:25:58 AMARM-USB-TINY-H works with IAR EW via OpenOCD GDBserver. This product:
https://www.olimex.com/Products/ARM/JTAG/ARM-USB-TINY-H/
First start the GDB server via OpenOCD and then in IAR under Project→Settings→Debugger select GDB Server for the Driver. Then go to Project→Settings→Debugger→GDB Server and set the TCP/IP address field to the IP address of your GDB server. This is typically something like "localhost:3333". It is also explained here:
https://www.olimex.com/Products/ARM/JTAG/_resources/Manual_IAR.pdf
https://www.olimex.com/Products/ARM/JTAG/ARM-USB-TINY-H/
First start the GDB server via OpenOCD and then in IAR under Project→Settings→Debugger select GDB Server for the Driver. Then go to Project→Settings→Debugger→GDB Server and set the TCP/IP address field to the IP address of your GDB server. This is typically something like "localhost:3333". It is also explained here:
https://www.olimex.com/Products/ARM/JTAG/_resources/Manual_IAR.pdf
#89
NXP / Re: How to setup LPC2378-STK a...
Last post by bradleyr436 - September 23, 2025, 05:38:53 PMId think the FTDI will do the full rs232; its in a box in storage unassembled so far.
Do you sell a JTAG solution that works with IAR? or if i search on ebay perhaps, what is the needed JTAG? dozens of jtag this and jtag that,
Do you sell a JTAG solution that works with IAR? or if i search on ebay perhaps, what is the needed JTAG? dozens of jtag this and jtag that,
#90
New Products release / Re: RP2350-PICO2-BB48
Last post by raybellis - September 23, 2025, 04:02:51 PMGreat to see a breadboard friendly RP2350B board at last! 
Any word on when it'll be available from other distributors? The €80 minimum order charge to the UK is somewhat prohibitive.
Any word on when it'll be available from other distributors? The €80 minimum order charge to the UK is somewhat prohibitive.