Shipped! They were very quick at turning around the depanelizing of the other 92 orders and getting these in the post. Obviously nothing huge in terms of news until I [ … ]

Finally! 2 days ahead of schedule, now OSH Park needs to ship them. With any luck I’ll be attempting to reflow the boards late next week, early July. Wow, how [ … ]

I’ve been testing my reflow oven setup and I’m having mixed feelings on using this specific toaster oven. Essentially it maxes out at 1 deg / sec but it can [ … ]

Firstly I want to give a huge thanks to Paul Archer. In my day job my employer has signs everywhere that say “Verify your design inputs”, and to that end [ … ]

Circuit Board design with the exception of the antenna and all respective parts (except the nRF51422 which I already have in my possession) have been ordered. They should arrive Tuesday [ … ]

Some slow progress, but it’s coming along. The schematic is about 90% done, but the PCB has barely been touched. I’ve just been doing some trials making sure it all [ … ]

Phew. It’s taken a bit, but in theory – and in individual component measurement, I am down to just about 5ma of current. On a CR2450 battery this should be [ … ]

After spending 3 hours literally looking at bike cranks, holding them in very different ways, in different light, cutting out pieces of cardboard and tucking them in different places I [ … ]

Quick Video showing the basics working. It’s not truly calculating power yet, but that is a minor calculation. I’m mainly debugging and trying to figure out power consumption right now.

Minor coding changes can have a major effect on current consumption. The above was taken running a while loop to wait for the DRDY line to de-assert itself. Notice the [ … ]