Zmanim display
Most shuls print a sheet. Someone has to make it, someone has to notice when it is out of date, and for eleven months of the year it is nobody's job. A screen that works the times out for itself never goes stale.
The times are not fetched from a website and they are not typed in by anyone. The board is given your shul's latitude and longitude once, and works out every zman on the screen itself, for the day it is currently showing. Change nothing and it is still correct in five years.
That matters most at the two ends of Shabbos. A zman that is wrong by a few minutes in the wrong direction is not a rounding error — it shortens Shabbos. The board is checked against the published Chabad times, zman by zman, and it does not round in the direction that would let Shabbos out early.
Alos hashachar, misheyakir, netz, sof zman krias shema, sof zman tefillah — with the shita your shul actually holds by.
Chatzos, mincha gedola, mincha ketana, plag hamincha.
Shkia, tzeis hakochavim, and Friday candle lighting at your shul's own minhag for how early.
The Hebrew date rolls over at shkia, not at midnight — so the wall never says yesterday all evening.
Once a screen knows what day it is, a great deal stops needing a person. The parsha, the Hebrew date, the yahrzeits that fall today, whose birthday it is, whether tonight is Rosh Chodesh, and which Yom Tov screen should be up — all of it follows, and none of it is typed in weekly.
What you do write yourself is the part only you know: minyan times, shiurim, a notice about the kiddush. Those you change from your phone, and the wall has them inside a minute.
People stand and look. The times are right to the minute, and the notices reach everybody without anyone taping a sheet to the wall. — the Rav of the shul where the first board runs
| The screen | Any TV or monitor with an HDMI socket. Most shuls already have one, or buy one for a couple of hundred dollars. |
|---|---|
| The device | $180 once. We buy it, set it up with your board already on it, and post it to you. It plugs into the HDMI socket. |
| The service | $49 a month, or $490 a year. |
| Installation | Plug in the device, join it to the shul wifi once. There is nothing to configure on the wall. |
| If the wifi drops | The board keeps running. Times are worked out on the screen, so a week without internet changes nothing on the wall. |
| Languages | Hebrew and English. |