I suspect many readers of this sub forum will already be aware of the various PCB's that Groupgets offer to accommodate a FLIR Lepton thermal imaging core. I am posting this purchase for several reasons.
1. This is a neat little PCB that may find use with those who own a faulty FLIR One product and wish to use the Lepton Core from it as a web cam or other applications.
2. The price of this Pure Thermal 2 PCB (without Lepton) is normally $99 but a chap in the UK is selling them for £50 or less. I paid £45 for mine on an offer. The auction is here:
https://www.ebay.co.uk/itm/Purethermal-2-I-O-board-for-lepton-sensors/264913675071?hash=item3dae15e33f:g:ts4AAOSwLfBfBxWX3. Highlighting the PCB's usefulness for anyone who does not already know about its availability.
4. A question .... is mine genuine
The quality is somewhat lacking in areas !
So I saw these Pure Thermal 2 PCB's for sale in the UK a while ago. They were being offered with a Lepton Core and sold for significant sums of money. The PCB without the Lepton was then offered for sale for a still significant sum of money so I passed over the auction without much temptation. Recently I saw the PCB on offer for £45 and was tempted. That offer ended and the price rose to £50. This week I offered £45 and it was accepted. The PCB arrived today so decent delivery by the seller
The Pure Thermal series of PCB's from GroupGets have been around in one form or another for a while. The latest models are the Pure Thermal 2 and Pure Thermal Mini. These latest releases provide a micro USB port for communications and programming, unlike previous models that required an active programming adapter. The layout component density of the Pure Thermal PCB 2 is pretty good but the Mini version shrinks it further for those tight for space.
I will not reproduce what the Pure thermal PCB is capable of as that is covered here:
https://groupgets.com/manufacturers/getlab/products/purethermal-2-flir-lepton-smart-i-o-moduleAs an open project the schematic and firmware is made available to everyone
Such an open project will hopefully encourage many projects that aim to meet various needs and get the best out of the Lepton Cores. The PCB supports all versions of Lepton core, including the radiometric versions. There is much scope for software development here
Groupgets provide plenty of documentation and software builds for the Pure thermal series of PCB's and they have already appeared in projects like the DIY thermal camera that was detailed on this forum. If you have an Lepton that is not usable in its current host, one of these little PCB's may enable use of that dormant core. It is VERY unusual for the Lepton core to fail in the FLIR One Cameras unless heavily abused in some way.
So moving on to my question about my unit being genuine ? In an open project like this, does "Genuine" actually mean anything I wonder. The seller states that he bought a number of Lepton Cores and Pure thermal 2 PCB's and did not need them all. This may well be completely true but a little voice in my head wonders whether these are clone PCB's as the finish is not as I would have expected from GroupGets. The Micro USB socket is slightly off angle and one shell securing tab is left unsoldered. The PCB cutting appears crude and has left glass fibre strands sticking out down the edges. This may well be the quality of the genuine GroupGets boards but I have no way to know except to write to GroupGets and ask. Personally I do not care though as I bought the PCB at a reduced cost in order to experiment with it. If its processor works as expected and the PCB works I having nothing to complain about
All I will say is that the UK seller is providing these PCB's for around half what one would cost from the USA. Make your own mind up as to whether they are worth buying
I attach some pictures of the diminutive Pure Thermal 2 PCB and a size comparison to the FLIR ONE G2 camera PCB. As shown, this is in with my test F1G2 and F1G3 as it will be used for testing Lepton cores and possibly a project that I have in mind for when I get the time to play.
Fraser