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Here's a word from our other sponsors In addition to Würth Elektronik and element14 Energy Micro and Linear Technology are also sponsors of the Energy Harvesting Solution To Go Challenge. This is the result of another test run on the e-paper.   According to its datasheet the e-paper uses 0mA except when the display is updated with a new image. When the display is updated it typically draws 8mA for the duration of the update with a short 40mA pulse when its DC/DC converter initiali ...
Early Morning Amnesia This is the result from my work from the Ultimate RoadTest. A road test that was sponsored by element14 and Texas Instruments. Read on to find out why it is here.     Unlike what the deer says the Energy Harvesting Solution To Go RoadTest Challenge is sponsored by Würth Elektronik, element 14, Energy Micro and Linear Technology.     The EFM32 offers five power modes. These are described in many document including page 4 of http://cdn.energymi ...
First: the good news:I found the problem! Now the bad news: I've still got to find the solution....   Recap In my post from yesterday I told that the output at Vout on the LTC3108 was very low. It was about 800mV. Today I did some experiments: I desoldered the LTC3108, and replaced it with the one from the demonstration board; to my surprise, the VOUT was zero volt, but the LDO voltage was 2.2V, and the VSTORE (excess energy storage) pin was 5.25V! Was VOUT defective? No, it was badly sold ...
Yesterday I had everything I needed: Components from Farnell, samples of the microcontroller from EnergyMicro, and PCB's from Wuerth / WE-Direkt  ! And to further thank the main contributors to this build: From left to right: coil by Wuerth, LTC3108 from Linear and of course the GiantGecko from EnergyMicro!   Building and debugging - No power, no connection........  I had some trouble getting the design going. I soldered everything in place, omitting a few C's to play with ...