Sunday, June 9, 2019

Crystal Capacitor Calculator

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I needed a simple crystal capacitor calculator, the formula used is: C = 2*C load – 2*C stray  (taken from  https://blog.adafruit.com/2012/...
1 comment:
Wednesday, April 10, 2019

Simple Open-Collector Comparator with Pull-up Resistor Hysteresis Level (Inverting Schmitt Trigger) Calculator

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Most of the calculators on the internet are designed for push-pull output comparator, while they are handy, I do find myself wanting to use ...
Tuesday, July 10, 2018

DIY Ultrasonic Cleaner (aka Sonicator)

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I recently needed a sonicator for my graphene experiments. Commercial units already available on the market, but, to satisfy my curiosity, ...
Tuesday, June 13, 2017

Low Cost Active Battery Balancer

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You might have noticed in my last posts that I used 120 pieces of recycled 18650 lithium cells alongside with 4S Lipo pack to power my ebike...
66 comments:
Wednesday, March 15, 2017

An Update on My eBike Project

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I mentioned in the last post that I bought 120 pieces of used 18650 cells from recycled laptop batteries to replace my exhausted 14S 8Ah LiP...
5 comments:
Thursday, January 12, 2017

Harvesting 18650 Cells from "Dead" Laptop Batteries

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I have been using Hobbyking's "Multistar High Capacity 4S 8000mAh" batteries on my ebike for exactly three months and now it ...
1 comment:
Wednesday, January 4, 2017

3D Printed LiPo Battery Box for My Ebike

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Visit my Thingiverse repo to view the STL files:  http://www.thingiverse.com/thing:2013381 Summary: -I printed this in Excelvan Coffe...
3 comments: