JYE Tech Forum

To reduce the drain on the battery in the Off position <20uA, I split the charging/protection circuit from the step up converter so the On/Off switch can turn off the power to it. This step up converter is very tiny and it fits in the original external power jack location which I didn't need anymor...

@hvorfordetda, perfect description and very nice pictures.

Most of these step up converters use either FP6291 or SX1308, both of these chips are almost identical and both use the same feedback arrangement and programing resistors. Some of these converters come with a small trim pot where you can adjust the output voltage to the desired output. Some of these...

I am curious why JYE did this crazy encoder daughter board in the first place. If not for the reverse direction of the encoder leads it looks like it was originally designed NOT to use the daughter board at all. My guess would be that originally the plan was to obtain the encoder with the leads bent...

Here is my implementation of of the internal Li-Ion battery power. I studied carefully all my options and I believe it accomplishes ALL my requirements. 1. Complete battery protection. Over/short current protection, over/under charge/discharge voltage protection. 2. Lowest possible battery drain in ...