Hoping to equip the apartment "talking" for hours, tried to collect an acceptable design using typical domestic chips. But once faced with the complexities of "firmware" electronic memory that is decided as the basis for their hours to accommodate wrist alarm TALKING WATCH - cheap Chinese consumer goods production. The result was a proposed information system.
An important part of the apartment talking hours is increasing in depending on the number of premises network of speakers and buttons. This gives you the opportunity to receive information about the exact time, while in any room or even in the corridor.
A circuit diagram (a), the power amp circuit Board (b) and the base unit (in) home talking hours (click to enlarge)
Wishing, for example, immediately after waking up from a dream to clarify the time click the button SB1. Triggered by getting the power supply, relays K1 and K5. The first of them instantly self-locking (through the normally closed K2.2, KZ.2, K4.2). The Contacts K1.1 it connects to the amplifier output, harvested transistors VT1-VT4, loudspeaker BA1 with volume control R1. Desmoplakin turnips K5 short-circuit contacts K5.1 (POLL) already starts at this point, the speech synthesizer TALKING WATCH, and in the bedroom sounds of speech information about the exact time. In other rooms speakers are comfortable.
Worth, going, say, to the kitchen, press the set button there SВ2 (in the hall - SВЗ, and in the corridor - SВ4), relay K1 if it is on the switch, inevitably returns to its original state. But paired with K5 K2 included (for other options - K3 or K4).
Triggered electronics and speaker BA2 (VAZ, BA4) generates speech information about time.
Home "talking" watches do not require debugging, convenient and reliable in operation. Also look very aesthetically pleasing, if you make the base block in elegant boxes with output on the front panel LCD screen indicator, reed pressing MODE, HR, MIN, and TALKING and stretching in each of the areas of wires (one pair for the button the second one is for the speaker) to be hidden under the baseboard.
However, limit to perfection, as you know, no. Home time service not exception. It is possible, in particular, to improve its energy security, replacing TALKING WATCH built-in mikromotoriky a bigger remote with a total voltage of 3 V or on the network adapter that will provide power supply and amplifier, and everything else is stable 5 and 20 In DC.
Author: V. Denisov