Darren Groves Posted January 1, 2016 Report Share Posted January 1, 2016 Even the seller doesn't know what it is...... http://www.ebay.co.uk/ulk/itm/191720748058 Link to comment Share on other sites More sharing options...
dougbgt6 Posted January 1, 2016 Report Share Posted January 1, 2016 Looks like an early digital clock? The slivery clip, back left, might clamp a battery? And the red and yellow wires run to a time set switch? Worth every bit of £30 quid! Link to comment Share on other sites More sharing options...
KevinR Posted January 1, 2016 Report Share Posted January 1, 2016 Looks like some form of kit built digital rev counter to me. Earth wire, power wire and a wire to the coil to count pulses ? Don't think its a clock as there is no crystal on the board to act as the time reference. Link to comment Share on other sites More sharing options...
dougbgt6 Posted January 1, 2016 Report Share Posted January 1, 2016 Wow! You can see there's no crystal? Eye's like a hawk. No wonder you're an administrator! Link to comment Share on other sites More sharing options...
Unkel Kunkel Posted January 1, 2016 Report Share Posted January 1, 2016 -it ain't no Triumph, bruv No idea- DIY electronics with display unit -rev counter? speedo? decades away from most Triumphs . Daily Mail will run a story about it being left by a time traveller Link to comment Share on other sites More sharing options...
JohnD Posted January 1, 2016 Report Share Posted January 1, 2016 PCB marked E1(7?)1 3181; could be other characters before that. Can't find a PCB or kit with that serial number. Can see a Texas Semiconductor chip 2121: that's an "LMH2121 3 GHz Fast-Responding Linear Power Detector with 40 dB Dynamic Range": http://www.ti.com/lit/ds/symlink/lmh2121.pdf Would that fit a rev counter kit? Can't read any of the other chips. Anyone got resolution improving software - Photoshop? And rev counter at all? two paired of displays: each one has one digit with seven bars to display the numbers , plus two vertical central bars - letters? Other has the same seven, with a '+' and a '-' symbol. Strange. John Link to comment Share on other sites More sharing options...
KevinR Posted January 1, 2016 Report Share Posted January 1, 2016 The TI chips are 74xx series TTL devices. The "2121" reference is probably a batch number - the LMH2121 device is far too modern, and it's a surface mount device in a totally different package. The quality of the soldering that can be seen is rather poor, and the flux has not been cleaned off. The board part number I can read is E71 3181 Enhancement with photo shop is not helping much. Link to comment Share on other sites More sharing options...
Pete Lewis Posted January 1, 2016 Report Share Posted January 1, 2016 The holes in the front almost look like old radio knob spacing wire colours any clues. Red feed , yellow elec aerial, digi radio convertor, imobilser alarm speed trap detector well theres nowt on tv pete Link to comment Share on other sites More sharing options...
JohnD Posted January 2, 2016 Report Share Posted January 2, 2016 That faux leather pad beneath the PCB shows that this is a DiY effort, for sure. Perpetrator nicked the flap off an old purse/handbag? John Link to comment Share on other sites More sharing options...
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