THG TIM 2015, Technical Manual

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TIM 2015 Technical Manual v1 (February 2018) Page 25
Chapter 5 Upgrades
TIM 2015 has been designed with upgradeability in mind. The two components that you may wish to upgrade are the microcontroller or
PIC chip that contains the operating system of TIM 2015 and the microSD cards containing the voice files (voices).
The latest revision of the microcontroller is shown at the end of Chapter 8 of this manual. As it explains there, if you wish to upgrade this to
the latest version, you can do this for a nominal charge. Please send it (wrapped in aluminium kitchen foil) to
David Thorpe (UE)
10 Redwood Avenue
DUDLEY
DY1 3TT
...together with a cheque for £5 made out to Unusual Electronics and a return label giving your name and address. Alternatively you can buy
a fresh PIC programmed with the latest version of the software for £20.
If you wish to buy additional microSD 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@btinternet.com for an order form.
In the fullness of time, voice files will also be available to download (to put on your own microSD cards) from the TIM 2015 website,
www.TIM2015.uk . Customers will be notified by e-mail when updates are available.
Operating code PIC chip — firmware versions

2.0 (August 2015) . First ‘ready for prime time’ version.

2.1 (January 2016). Firmware modified to allow up to 16 different voices.

2.2 (January 2016). Method of saving call statistics improved.

2.3 (April 2016). Revised to take account of difficulty in decoding the radio time signal transmitted by MSF. The MSF transmissions
currently include data in the DUT1 field to indicate a small offset in the broadcast time in mS between UTC and UT1. One of TIM
2015’s data error-checking routines incorrectly flagged the field as an error condition and rejected the data in that field when it was