20-06-2013, 07:43 AM
(20-06-2013, 06:53 AM)milairuk Wrote: Just found another seller with the blue backlit http://www.ebay.co.uk/itm/Transistor-Tes...ltDomain_0&hash=item257f1e6670
This is the same guy - if its the V2 version, the auction description states this... V1s can be upgraded at any time to V2s by re-flashing the firmware.
(20-06-2013, 07:15 AM)Yorkie Wrote: Hmm, don't know what's going on with the displays.
Originally, the green version was offered from the supplier at the link that Nick gave at the start of this thread, as a cheaper alternative to the blue backlit one. As to the new version of the firmware, I don't know what additional advantages it confers, but I'm right at the bottom of the food chain which it comes to PICs, and the only V1 that I know of is (or rather was), the 'doodlebug' which menaced the south coast of England in the latter years of WW2.
Its not using a PIC - its an Atmel atmega uP. Small point, but important - different manufacturer, different way of programming, completely different architecture.
I will upgrade mine, and if its easy-ish (I have all the Atmel dev environment as they are my uP of choice), I'll offer an at-cost service to others.
Regarding the display - don't get too hung up on that - they are easy to change - the normal standard is for an interface known as H44780 - most generic LCDs offer this interface and I deeply suspect this one is no different - there is one other interface, but its not common. If you want to change your green-no-back-light display to a blue one, then its VERY cheap to do so , e.g. http://www.ebay.co.uk/itm/400458908216
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