After several requests and queries for the now long-obsolete HF-08 logger, originally produced back in the last century (just)  I now have a completely new one.:

 

www.g4jnt.com/HF-10.htm  

 

It has :

  4 analogue channels with input conditioning options

  10 bit A/D resolution  (hence the name !)

  Precision voltage reference

  COM Port or USB interface to host.  The USB makes use of a virtual com port chip installed on the PCB)

  Could also be used with with Bluetooth or optical interface modules

  ASCII text output, optimised for reading into Excel or similar for analysis / plotting

  Link selectable sampling at 80ms to 5 minute intervals

  In circuit reprogrammable so the module can be upgraded or new functionality added whithout changing the hardware.

 

Andy

 

PCBs are in manufactures, and I expect to have the first units availalble by around middle of October