Lithium Battery Boost Power Supply Comparison

I purchased two boost converters or DC to DC power supplies, or whatever else people want to call them on eBay. One was a LiPower board from Sparkfun for $14.95. I assume it’s made in the US, has a battery connector and can be soldered with 0.1in pitch terminals. It’s setup for low voltage drop…

Cheap 5V power from that 3.7V LiPo

I currently have all projects on hold while I join a BMP085 break out board from SparkFun with a 8pin PIC into a barometer for my upcoming section hike of the PCT in September (I’m fairly certain I wouldn’t have a job nor wife if I declared I was going to through-hike). This year I’m…

PIC-based ESR meter

My homebrew ESR meter spots a cap that is less than desirable. If anyone is interested I have my .asm code I am happy to share. The board is an Olimex prototyping development kit I got from ‘microcontrollershop’. It’s all assembler .. No C version and no desire to work on this anymore. The electrical…

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