Find helpful customer reviews and review ratings for Honeywell Rondostat HR- 20 Radiator Thermostat Timer at Read honest and unbiased. ft3/hr m3/hr ft3/hr m3/hr ft3/hr m3/hr. VR 1/2 x 1/2. 10d. VR 20e . Control Engineering review; contact your Honeywell. ft3/hr m3/hr ft3/hr m3/hr. SV 10d. SV 1/2 x 1/2. 20e. . applications require Honeywell Home and Building Control.

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I will try it improve. A good battery gives ideally mAh, which means 65 years. I have same pinout like HR20, it mean that we can use same programming cable and honywell serial level or serial USB convertor. But with wireless extension it is not problem it is syncronized from master.

Hello, Jiri Dobry here are a logfile about the loss of pulses problem. Display is not fully updated: It not depend to HR20 unit, but on valve. This is signalization where motor stop logical level.

OpenHR Firmware for Honeywell Rondostat HR20E –

We need it to document “magic indexes” on setting Gxx and Sxxxx commands or watches Txx command Changelog: I am not wery experienced with Windows and have no license so I really would prefer a Linux based development platform.

Install the program, chut it, modify the new cfg and restart the program. Do you have an explanation? Which Amtel chip does the rondostat have? We don’t know how to set it via serial line, how to bugug problematic situation etc. To display the set and the current temperature the uC slave receives the information via the HRRSconnector. Note that this pin-numbering is opposite to the one described in the German documents.


hr-20r Please see to eeprom. But it would be nice if you could explain what the exact function or way of use of the master is. Since I know how to program in.

I have a problem with version Can you give me an SVN-Account for the project? If you don’t touch the wheel and confirm the standard value of with the PROG key the stored value is sometimes and sometimes Did anyone else experience the same problems?

Temperature reading during motor run: No honeywekl or punctuation in the commands are accepted. This bug was fixed and I was not abble to see that you are use too old version before bugfix.

So the next release will require only. Except this I can’t recomend I2C bus over all valves. Estimated delivery dates – opens in a new window or tab include seller’s handling time, origin Post Code, destination Post Code and time of acceptance and will depend on postage service selected and receipt of cleared payment – opens in a new window or tab.


Now what the attacker can do some days later: Concerning a new regulator model, I have unfortunately no experience and would have to do a lot of experimenting and development work to get something reasonable to work. NET is quite powerful. And the Is value should be limited for keeping the contoller responsive even if it is what you call hijacked. The temperature can be set in the eeprom block temperaturebut it is not a nice way because of the required calculation of the necessary value.

See other items More Yesterday I bought me a HR20, connected my spi-programmer to the corresponding pins and set the fuses to l: Blinking segment indicate with values is on view. Currently the idea is to use an Atmel ATmega88 could be changed to ATmega48 or ATmega if the control store requirements turn out to be smaller or larger. You can still see all customer reviews for the product. But I have no logging data, so I am still very uncertain about the effect. If you will use smaller prescaler you will increase volume of CPU wake-ups and it is not good for bateries.


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It is unbelivable for me, that Rev can lost some motor steps. I used the Makefile from the repo with only one little modification: Also missing is the possibility honeyaell assign this temps to the switching time. Hello Jiri, my “partial calibration” was only a thought for a workaround to automatically correct the actual position. It depends on the current position of the wheel. An additional option is the 3 wire USI connection.

Customer reviews

It’s a very simple job these things have to do and for them to fail so often is really bad. You can tune this value config. It works, but need some cleanups.

It is not problem. When updating this memory honeywelk, also set location to the same value. It is possible use bootloader to flash this device.

LED can be moved to another pin than PD7 16 but tell me it. I like the product when it works – its what happens when it doesn’t that is annoying. It is needed for force communication from selected slave.