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#1
ESP32 / Re: ESP32-POE-ISO ESPHome: wro...
Last post by LubOlimex - Today at 08:11:02 AMThanks for sharing. The important part about PoE2 is that it uses ESP32-WROVER chip instead of ESP32-WROOM. Which leads to different Ethernet clock pin compared to ESP32-POE.
#2
ESP32 / Esp32c3-devkit-lipo with batte...
Last post by sa1003 - May 26, 2024, 11:44:21 PMHello, First sorry for my unprofessional question - absolute newbie 
I want to operate the board with a 2000mAh LiPo battery. I measured correct 4.2V with the multimeter. When i disconnect the usb, there's no power. How can i ensure, hat the battery takes over?
Greetz, Guido
I want to operate the board with a 2000mAh LiPo battery. I measured correct 4.2V with the multimeter. When i disconnect the usb, there's no power. How can i ensure, hat the battery takes over?
Greetz, Guido
#3
ESP32 / Re: ESP32-POE-ISO ESPHome: wro...
Last post by dhy2k - May 25, 2024, 09:09:14 PMThanks everyone - great thread.
I have been trying to get Olimex-POE2 working with ESPHome on ethernet. I've had no problem with the previous POE version, but wanted the POE2 upgrade for the greater power to do door locks etc.
All the standard stuff on the internet & ESPHome didn't want to work for bringing up the ethernet. Various errors including:
[D][esp-idf:000]: E (368) lan87xx: lan87xx_init(499): wrong chip ID
After a degree of fiddling (and connecting to the POE2 via USB-USB from my Macbook) this is the config that works for ESPHome & the Olimex-POE2. Just sharing to help anyone else with the same headache :-)
ethernet:
type: LAN8720
mdc_pin: GPIO23
mdio_pin: GPIO18
clk_mode: GPIO0_OUT
phy_addr: 0
power_pin: GPIO12
I have been trying to get Olimex-POE2 working with ESPHome on ethernet. I've had no problem with the previous POE version, but wanted the POE2 upgrade for the greater power to do door locks etc.
All the standard stuff on the internet & ESPHome didn't want to work for bringing up the ethernet. Various errors including:
[D][esp-idf:000]: E (368) lan87xx: lan87xx_init(499): wrong chip ID
After a degree of fiddling (and connecting to the POE2 via USB-USB from my Macbook) this is the config that works for ESPHome & the Olimex-POE2. Just sharing to help anyone else with the same headache :-)
ethernet:
type: LAN8720
mdc_pin: GPIO23
mdio_pin: GPIO18
clk_mode: GPIO0_OUT
phy_addr: 0
power_pin: GPIO12
#4
STMP1 / Re: Olimex STMP1 LIME - Error ...
Last post by Gaël - May 24, 2024, 05:16:59 PM> Using the modified SOM image without the AXP209 support on the LIME2 board would will lead to problems. The boards are different.
Indeed I notice a lot of problems with the SOM image but I was able to see that the startup problem disappeared.
> I can ask our Linux developers to make image for the STMP LIME2 board without AXP209 support (similar to the image we made for the STMP SOM board), however can you describe what interfaces and connectors of the LIME board do you use in your setup?
I never use the HDMI and the LiPo battery connector.
I always use the ethernet interface and MicroSD card connector.
MicroSD cards will be replaced by Flash modules soon.
I often use USB port (for Modbus with RS485 or RS232 converter).
I use CAN bus sometimes.
Indeed I notice a lot of problems with the SOM image but I was able to see that the startup problem disappeared.
> I can ask our Linux developers to make image for the STMP LIME2 board without AXP209 support (similar to the image we made for the STMP SOM board), however can you describe what interfaces and connectors of the LIME board do you use in your setup?
I never use the HDMI and the LiPo battery connector.
I always use the ethernet interface and MicroSD card connector.
MicroSD cards will be replaced by Flash modules soon.
I often use USB port (for Modbus with RS485 or RS232 converter).
I use CAN bus sometimes.
#5
STMP1 / Re: Olimex STMP1 LIME - Error ...
Last post by LubOlimex - May 24, 2024, 11:45:19 AMThe quick power cycle issue is expected behavior. I can replicate it on every board 100% of the time myself. It can't be fixed completely. There are few workarounds like using a battery or another source of power or disabling AXP209.
Using the modified SOM image without the AXP209 support on the LIME2 board would will lead to problems. The boards are different.
I can ask our Linux developers to make image for the STMP LIME2 board without AXP209 support (similar to the image we made for the STMP SOM board), however can you describe what interfaces and connectors of the LIME board do you use in your setup? Some things will not work without the AXP209 support. I believe the HDMI will not work among others.
Using the modified SOM image without the AXP209 support on the LIME2 board would will lead to problems. The boards are different.
I can ask our Linux developers to make image for the STMP LIME2 board without AXP209 support (similar to the image we made for the STMP SOM board), however can you describe what interfaces and connectors of the LIME board do you use in your setup? Some things will not work without the AXP209 support. I believe the HDMI will not work among others.
#6
UEXT / Re: MOD-IO2 relay opening/clos...
Last post by LubOlimex - May 24, 2024, 08:08:03 AMWe haven't measured it but some minimal delay is expected until the command is recognized by the PIC that issues the trigger. Best idea is to test empirically with small delay and increasing if necessary.
#7
UEXT / MOD-IO2 relay opening/closing ...
Last post by ilario - May 23, 2024, 07:30:46 PMIs there an estimation of how much is the expected time (milliseconds?) between sending the I2C command for opening/closing the relays and the actual opening/closing?
I am using the relays as part of a measurement system, and I got the doubt I should wait some (how much?) time between changing the relay status via I2C and actually starting a measurement.
Thanks!
I am using the relays as part of a measurement system, and I got the doubt I should wait some (how much?) time between changing the relay status via I2C and actually starting a measurement.
Thanks!
#8
ESP32 / Re: ESP32-Gateway - cannot run...
Last post by ddog - May 22, 2024, 04:19:48 PMI am new to Olimex. I am experiencing exactly the same issue. I have a Rev G board. Followed instruction as per Olimex Website.
Receive same error and switched to POE board. Problem solved.
Is there a resolution to this?
Regards,
D
Receive same error and switched to POE board. Problem solved.
Is there a resolution to this?
Regards,
D
#9
AM3352 / Re: Touchscreen compatibility ...
Last post by grewdraft - May 22, 2024, 06:19:24 AMQuote from: Christopher23 on May 17, 2024, 07:22:53 AMA good choice for a small touchscreen that is compatible with the AM3359-SOM-EVB-IND is the 4.3-inch LCD with resistive touchscreen from Waveshare. This monitor has a resolution of 480x272 and comes with a USB touch control board, making it easy to connect to the AM3359-SOM-EVB-IND via USB port.
Doesn't sound bad. Can you provide some more information about durability or price?
#10
STMP1 / Olimex STMP1 LIME - Error star...
Last post by Gaël - May 21, 2024, 03:04:58 PMHi Olimex!
I have random boot error at starting up with SMTP1 LIME.
On micro power cuts, some boards don't restart.
On 20 STMP157-OLinuXino-LIME2H-EXT (Rev_B) boards in production approximately 5 boards remain frozen after thunderstorm (its are distributed in several places so its do not suffer exactly the same power cuts).
I never have this problem when I reboot a board with a "shutdown -r now" (or "shutdown -r 00:00").
I did some tests and after some power cuts, the board stay frozen on :
When the board is frozen, the reset button don't help, the error returns.
A quick power cut doesn't help either.
For the error to disappear, the board need to be unplugged several seconds.
Quick power cuts seems to cause the problem every time.
NB1 : I tried with 1 A and 2 A power supply.
NB2 : I can't use LiPo battery to protect boards against micro power cuts because LiPo are not safe enough in the hot environments where boards are used (wood boiler).
NB3 : I did some tests with the https://ftp.olimex.com/TEMP/SOM-NO-AXP209/STM32MP1-OLinuXino-SOM-bullseye-minimal-20240328-133932.img.7z and I can't reproduce the problem with this image even with quick power cuts.
I have random boot error at starting up with SMTP1 LIME.
On micro power cuts, some boards don't restart.
On 20 STMP157-OLinuXino-LIME2H-EXT (Rev_B) boards in production approximately 5 boards remain frozen after thunderstorm (its are distributed in several places so its do not suffer exactly the same power cuts).
I never have this problem when I reboot a board with a "shutdown -r now" (or "shutdown -r 00:00").
I did some tests and after some power cuts, the board stay frozen on :
Code Select
U-Boot SPL 2021.04+olimex-1-20240312.134658 (Mar 12 2024 - 13:48:01 +0000)
Model: STM32MP1 OLinuXino-LIME
Init AXP209 PMIC
VDD Core set to: 1350 mvWhen the board is frozen, the reset button don't help, the error returns.
A quick power cut doesn't help either.
For the error to disappear, the board need to be unplugged several seconds.
Quick power cuts seems to cause the problem every time.
NB1 : I tried with 1 A and 2 A power supply.
NB2 : I can't use LiPo battery to protect boards against micro power cuts because LiPo are not safe enough in the hot environments where boards are used (wood boiler).
NB3 : I did some tests with the https://ftp.olimex.com/TEMP/SOM-NO-AXP209/STM32MP1-OLinuXino-SOM-bullseye-minimal-20240328-133932.img.7z and I can't reproduce the problem with this image even with quick power cuts.