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TIM 2015 Technical Manual v1 (February 2018)

Page 18

Graphics courtesy of Technologystudent.com

For all of these reasons

it is essential to correct any cold or dry solder joints.

If you find one, the solder on the joint should be

removed with solder-wick braid or a solder sucker and care taken to ensure that a good joint is made when re-soldering it.

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Summary of Contents for TIM 2015

Page 1: ...TIM 2015 Technical Manual v1 February 2018 Page 1 TIM 2015 Speaking Clock TECHNICAL MANUAL...

Page 2: ...roblems when printing onto US Letter size 8 5 x 11 paper With Acrobat Reader for instance under Size Options you will see four options Fit Actual size Shrink oversized pages and Custom Scale One of th...

Page 3: ...are three things that we need to stress in order to avoid any confusion Accuracy The claim that we make for TIM 2015 is that it is accurate to within a second but no more In other words if you synchro...

Page 4: ...nderson Andrew Emmerson and the manufacturers and suppliers of various parts used The computer engraved panels are produced for us by Architectural Industrial Engravers Northampton http www aiengraver...

Page 5: ...Troubleshooting problem solving 4 Background information 5 Upgrades 6 The Catalex serial MP3 player 7 Creating new voices for TIM 2015 8 Revisions to this manual 9 Safety notice and legal disclaimer...

Page 6: ...onise the voice and time display updates module MOD3 also contains a separate memory chip which is not used The time of day speech announcements are handled by the Catalex player module MOD4 This cont...

Page 7: ...rightness is controlled using a PWM output from the microcontroller to driver transistor T3 The user interface is provided by a mechanical rotary encoder with switch When it is turned between each det...

Page 8: ...i Fi off Display brightness setting 34 half power Approx 0 7W Amplifier off Wi Fi off Display brightness setting maximum brightness Approx 1 14W Amplifier off Wi Fi active Display brightness setting m...

Page 9: ...TIM 2015 Technical Manual v1 February 2018 Page 9 Board dimensions 140 x 85mm...

Page 10: ...TIM 2015 Technical Manual v1 February 2018 Page 10 Board layout...

Page 11: ...TIM 2015 Technical Manual v1 February 2018 Page 11 Circuit diagram...

Page 12: ...sehold or general waste It should instead be handed over to the applicable collection point for the recycling of electrical and electronic equipment or returned to the supplier for disposal RoHS regul...

Page 13: ...has been set and retained in the RTC module Set the date and if it is not retained after power off check whether the CR2032 coin cell has become dislodged or requires replacement Error 01 VoiceHW The...

Page 14: ...occur if local radio interference such as a noisy thermostat or an unsuppressed passing motorcycle is stronger than the signal from the distant radio time signal transmitter and corrupts the radio sig...

Page 15: ...bruary 2018 Page 15 Catalex player blue module Micro SD card projecting slightly Side with lettering uppermost Coin cell in its holder with engraved lettering visible and uppermost Microcontroller chi...

Page 16: ...the soldering iron being used to heat the solder directly rather than the parts themselves Properly done the iron heats the parts to be connected which in turn melt the solder guaranteeing adequate he...

Page 17: ...eneral a good looking soldered joint is a good joint As mentioned it should be smooth bright and shiny If the joint has lumps or balls of otherwise shiny solder the metal has not wetted properly Not b...

Page 18: ...chnologystudent com For all of these reasons it is essential to correct any cold or dry solder joints If you find one the solder on the joint should be removed with solder wick braid or a solder sucke...

Page 19: ...bstituting another LED Is plug not making proper contact on the matching connector on the PCB If this is not the problem check and reflow if necessary the appropriate soldered joints on the PCB 3 Pres...

Page 20: ...of the cable has been pushed onto the pin header of the display the wrong way round See sketch in Chapter 4 Wiring The body of the plug lies back over covering the PCB it does not project over the edg...

Page 21: ...with the parallel serial jumper circled in red 6 The liquid crystal display does illuminate but it shows gibberish that changes constantly This is usually a loose wire connection in the flylead or el...

Page 22: ...a master volume control that you can operate by pressing the left hand knob and entering the Settings menu Scroll through until the arrow points to Voice Volume and press the knob again You can now al...

Page 23: ...was then put on a continuous soak test for several months during which time no problems occurred The opportunity was taken to fine tune some of the audio files Soak Testing is a type of performance t...

Page 24: ...ll as the minute was changing and the third stroke happened at the same moment that the minute changed on my IP phone which is synced to my internal NTP server About Unusual Electronics This is the fi...

Page 25: ...roSD cards containing the latest voice files these are available at cost 2 including inland postage at the time of writing Five voices are supplied per microSD card Please e mail andrew_emmerson btint...

Page 26: ...e is still plenty of other error checking carried out 2 4 October 2016 Option added to provide for time announcements given in 24 hour format 2 5 April 2017 Voice menu no longer mention Pat Simmons by...

Page 27: ...sequence begins with the time indicator With so called British voices this is a set of three pips that begin at 08 18 28 38 48 and 58 seconds In this way the last of these three pips will occur at ex...

Page 28: ...ening The software makes a check to see whether these files are present and if so an on screen message indicates that a USA voice has been selected Times in the 24 hour format include hours files name...

Page 29: ...or skilled we advise you not to make any alterations to this scheme of things otherwise commands from the microcontroller PIC chip will probably fail to work The files that you create need to be stor...

Page 30: ...and where you place the audio within the file is critical to getting things right too The following details are correct for the Pat Simmons British voice Other voices will use slightly different timin...

Page 31: ...to 159 WAV contain the minutes from 1 to 59 These also run for 1 3 seconds with the audio starting at 0 30 seconds File 200 WAV contains the word Precisely It lasts 2 1 seconds with the audio beginni...

Page 32: ...mplete cycle 080 3 0 seconds 00x 3 1 seconds 1xx 1 3 seconds 2xx 2 0 seconds TOTAL 9 4 seconds not 10 00 seconds because we need to take account of the latency or delays that occur while the Catalex c...

Page 33: ...ning that the final And ten seconds segment is truncated If alternatively I add a period of silence after the toneburst in 080 then the beep is sounded too early What am I doing wrong When I was writi...

Page 34: ...latter but please confirm It is the latter because the Catalex unit cannot play more than one file at a time I contacted Catalex about their Serial Play command back in 2015 and they said it did not...

Page 35: ...t to 1 The Catalex player is an ingenious device and priced attractively It is not very sophisticated however and it cannot play more than one file at a time If instructed to say sound the three pips...

Page 36: ...mand for the pips file 98ms earlier than second x8 or second x0 for USA format voices to allow the pips to start playing promptly at second x8 or x0 8 Fragmentation of the data on the microSD card cau...

Page 37: ...moving any excess silence you may find they will work then You may need to remove excess silence from other files 14 In any 10 second voice file the actual speech tone and pauses should not exceed 9 8...

Page 38: ...9715958 1st Play 3 339516163 Folder 7 Track 3 3 299515963 2nd Play 3 309262037 0 151778221 Folder 8 Track 3 3 363430023 1st Play 3 359964848 Folder 8 Track 3 3 33957386 2nd Play 3 32967186 0 172188044...

Page 39: ...the item is in the FAT table Renaming won t change that Folder 16 Track 3 3 511431932 1st Play 3 514756918 Folder 16 Track 3 3 481031179 2nd Play 3 491523981 0 334040165 Folder 17 Track 3 3 542538166...

Page 40: ...6545 0 499085 Folder 10 Track 80 3 298041105 3 308758974 Folder 10 Track 80 3 228356123 3 237987995 Folder 10 Track 9 3 512026072 3 51099205 Folder 10 Track 128 1 548631191 1 54822588 Folder 10 Track...

Page 41: ...micro seconds in between each check of the input buffer so this could be subtracted Timing report Catalex Full Sequence freshly formatted to FAT16 B 1st run Sequence 2nd run Sequence Extra time Extra...

Page 42: ...0 3 058138132 3 047650814 Folder 1 Track 9 3 158977985 3 149448872 Folder 1 Track 128 1 36714983 1 346889019 Folder 1 Track 250 2 065678835 9 64994478 2 075988054 9 619976759 0 0 Folder 5 Track 80 3 2...

Page 43: ...41852045 Folder 20 Track 250 2 44029808 11 522866 2 450479984 11 53380084 1 876312 1 868589 Full Sequence side by side First Run Second Run FAT16 A FAT16 B FAT32 FAT16 A FAT16 B FAT32 Folder 1 9 64655...

Page 44: ...ou intend making an entirely new recording the process will be greatly simplified if you conform as closely as possible to the same format and timing of phrases as the standard British speaking clock...

Page 45: ...e you may care to apply compression EQ and reverb delay to make it sound even better Here you generally need to experiment as what sounds good depends on both the microphone and the 6 Good equipment h...

Page 46: ...nds thereafter This USA format is valid in most countries Many but not all USA format voice files include a preamble such as Good Morning Good Afternoon or Good Evening and when the microcontroller de...

Page 47: ...to it now and again In some cases errors occur only at certain times of day usually when the and 45 seconds is cut short in its prime and replaced by the next toneburst or pips This indicates that the...

Page 48: ...d advice provided in the User Assembly and Technical Manuals and any advertisements and leaflets are purely advisory and given in good faith without any legal engagement or responsibility Errors and o...

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