"New?" Things like RFID tags have been doing so for several decades, and prominent companies like Analog and TI have a whole range of energy-harvesting ICs.
I've been looking to swap in a rechargeable battery for a 3-Button Mini Remote Control (LiftMaster 890MAX). The remote control's case 60 mm x 35 mm, the device pulls 3V at 225mAh, and I'd like to replace the 3V CR2023 with an RJD2032C1 rechargeable coin cell battery from CDE.<p>The idea is to affix a thin, lightweight, high-efficiency 3V - 5V solar cell to the back of the case that can trickle-charge the battery, such as the SM141K06TFV from ANYSOLAR ($10.98, 184 mW, 58.6 mA, 4.15 V, 45 mm x 22 mm x 1.5 mm).<p>Ideally, the remote control would be battery-free, but not having to swap the battery more than once a decade would work. Any ideas on how to accomplish this?
I love energy harvesting it’s one of my favorite topics in embedded land.<p>I’ve been toying with a chip that harvests power from an NFC phone near by and it’s super neat to have a microcontroller just do its thing with no direct attached power supply.
How much ambient power is typically available in different environments? I skimmed the article but didn't catch any clear information.<p>Also, if I collect ambient wifi power, for example, instead of reflecting wifi - to whatever extent I do that - I create a sort of black hole. How does that affect availability of the wifi signal for its intended use?
Im assuming this is something related to Maxwell Chikumbutso's "invention" ?<p><a href="https://www.prv-engineering.co.uk/free-energy-vehicle-innovation-or-impossible-dream/" rel="nofollow">https://www.prv-engineering.co.uk/free-energy-vehicle-innova...</a><p>His on national tv promoting this with the president of the country. Alot of people think its a grift, the devices seem to be simply inverters.