<![CDATA[Monarco HAT]]>https://forum.rexygen.com/category/6RSS for NodeWed, 20 May 2026 13:54:09 GMTThu, 05 Jun 2025 21:40:32 GMT60<![CDATA[Monaco hat problem]]>Hi Phil,

A colleague has already responded to your query via support. To ensure we have all the information, I’m adding some additional questions here on the forum as well. We need more details from you:

Has the problem been present since the beginning, or did something change? What has changed? Did the LEDs work well before? What REXYGEN project are you using? Can you try running the "0121-09 Monarco HAT Demo Example" and see if you can trigger the LEDs? What does the system log say?

Best regards,
Jan

]]>https://forum.rexygen.com/topic/580/monaco-hat-problemhttps://forum.rexygen.com/topic/580/monaco-hat-problemFri, 03 May 2024 16:58:04 GMT<![CDATA[Modbus over RS485 and USB]]>@mikeyh
Hello Mike,

Yes, it's possible to use both RS485 for RTU on the Monarco and the USB on the RPi for RTU simultaneously. Check out the illustrative example "0121-11_Monarco_HAT_Modbus_RTU_Loopback_USB." This example features two distinct Modbus drivers: one for /dev/ttyAMA0 (Monarco HAT) and another for /dev/ttyUSB0.

Cheers,
Jan

]]>https://forum.rexygen.com/topic/391/modbus-over-rs485-and-usbhttps://forum.rexygen.com/topic/391/modbus-over-rs485-and-usbWed, 16 Aug 2023 03:55:24 GMT<![CDATA[SSD Storage]]>Hi Mike,

I know that @RexPeter use it on his setups with REXYGEN - maybe he can share some experiences with that.

Kind Regards,
Tomas

]]>https://forum.rexygen.com/topic/389/ssd-storagehttps://forum.rexygen.com/topic/389/ssd-storageTue, 15 Aug 2023 00:43:28 GMT<![CDATA[Fan Speed Control with Counter]]>@mikeyh You are welcome.
Cheers,
Jan

]]>https://forum.rexygen.com/topic/321/fan-speed-control-with-counterhttps://forum.rexygen.com/topic/321/fan-speed-control-with-counterTue, 02 Aug 2022 04:08:29 GMT<![CDATA[Power Over Ethernet]]>@reitinge No worries, I was just wondering. Thank you for the reply

Cheers

Mike

]]>https://forum.rexygen.com/topic/305/power-over-ethernethttps://forum.rexygen.com/topic/305/power-over-ethernetTue, 17 May 2022 22:22:15 GMT<![CDATA[Monarco Hat RTC]]>@reitinge Hi Jan,

Thank you. I've installed it and will try it today.

Cheers

Mike

]]>https://forum.rexygen.com/topic/253/monarco-hat-rtchttps://forum.rexygen.com/topic/253/monarco-hat-rtcThu, 08 Jul 2021 19:55:36 GMT<![CDATA[Raspberry Pi OS image with REXYGEN for Monarco HAT]]>Hello,
we have released image with the REXYGEN 2.50.10-next (2.50.10.13233) which is available in our official repository.

]]>https://forum.rexygen.com/topic/249/raspberry-pi-os-image-with-rexygen-for-monarco-hathttps://forum.rexygen.com/topic/249/raspberry-pi-os-image-with-rexygen-for-monarco-hatWed, 30 Jun 2021 07:50:22 GMT<![CDATA[Issues with data logging]]>Hi Bruno,
sorry for a late response. Could you please post here a print screen of your ARC and TRND blocks properties? I assume that you have RexArc installed on your device with command sudo apt install rexarc
and you export data from the archive to CSV using a command in RexArc (please, correct me if you are using different approach). Could you please copy this command as well?

How much difference is there in time stamps? Can't it be caused by a wrong set time zone? In the ARC block, there is a parameter ldaymax. This parameter set the maximum size of archive per day (see doc here. This could be the reason why some data is missing.

Best regards,
Jan

]]>https://forum.rexygen.com/topic/244/issues-with-data-logginghttps://forum.rexygen.com/topic/244/issues-with-data-loggingFri, 18 Jun 2021 09:06:06 GMT<![CDATA[Peer to Peer Connetion with laptop]]>@mikeyh Hi Mike,

thanks for question. This is not about REXYGEN settings but Linux/Raspberry Pi OS settings.

The easiest way is to configure the RPi to have a static IP address.
Other method is to configure RPi to wait for DHCP server and if it won't receive any IP address then use fallback to static IP. This approach combines best from both static and DHCP.

Try to Google the keywords from above to get the up-to-date instructions.

Kind Regards,
Tomas

]]>https://forum.rexygen.com/topic/232/peer-to-peer-connetion-with-laptophttps://forum.rexygen.com/topic/232/peer-to-peer-connetion-with-laptopFri, 26 Mar 2021 01:28:50 GMT<![CDATA[5V DOUT]]>@fabio
add poznámka: Je to vidět z výše zmíněného obrázku. Jakmile mezi DOUT a GND připojíte odpor a DOUT bude mít hodnotu OFF, vznikne napěťový dělič. Podle připojeného odporu dopočtete napětí, které bude mezi DOUT a GND. Nicméně procházející proud bude stále pravděpodobně nedostatečný. DOUT je prostě dělaný tak, aby se spínal s externím napětím.

Buď si za 12V předřaďte odpor tak, aby Vám vycházelo požadované napětí (5V) , nebo použijte externí zdroj 5V nebo sežeňte 12V ventilátor. Výpočty a konečnou volbu nechám na Vás.

S pozdravem,
Reitinger

]]>https://forum.rexygen.com/topic/214/5v-douthttps://forum.rexygen.com/topic/214/5v-doutSun, 07 Feb 2021 11:54:06 GMT<![CDATA[Leakage from USB]]>@mikeyh Hi Mike,

Monarco HAT is grounded through Raspberry Pi (via 40 pin header). For complex grounding you should also ground GND output of power supply used to power Monarco HAT and Monarco HAT metal case. Could you please try it?

Cheers,
Tomas

]]>https://forum.rexygen.com/topic/209/leakage-from-usbhttps://forum.rexygen.com/topic/209/leakage-from-usbMon, 01 Feb 2021 00:04:33 GMT<![CDATA[RC Servo PWM control.]]>You are welcome 🙂

]]>https://forum.rexygen.com/topic/162/rc-servo-pwm-controlhttps://forum.rexygen.com/topic/162/rc-servo-pwm-controlMon, 16 Nov 2020 11:20:20 GMT<![CDATA[Modbus using 485 output and USB]]>Hi Mike,

there is also one post at old REXYGEN forum which might help you:
https://www.rexcontrols.cz/forum/viewtopic.php?id=17

Cheers,
Tomas

]]>https://forum.rexygen.com/topic/136/modbus-using-485-output-and-usbhttps://forum.rexygen.com/topic/136/modbus-using-485-output-and-usbThu, 10 Sep 2020 04:18:02 GMT<![CDATA[Configuring Analog inputs]]>Hi Mike,

I wasn't 100% right, sorry for that.

It is prohibited to use both flags for AI at the same time by the compiler. The solution is not that straightforward however it is possible:

use just "MNR_AI1" flag to set the current mode use SDC write flag, address 0x00A - bits 01 and 02 (see docs: https://github.com/monarco/monarco-hat-documentation/blob/master/Monarco_HAT_SPI_Protocol.md#service-channel-register-description) when in current mode you need to manually convert the value by following formula 10V = 52.475 mA

If you need any additional help, let me know.

Cheers,
Tomas

]]>https://forum.rexygen.com/topic/125/configuring-analog-inputshttps://forum.rexygen.com/topic/125/configuring-analog-inputsMon, 03 Aug 2020 05:11:17 GMT