2020년 11월 7일 토요일

Toyota OEM microphone adapter for aftermarket receiver

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When I upgraded the stereo of my 2013 Toyota Sienna (although I don't own the car anymore), I found that most of aftermarket receivers a...
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2020년 10월 18일 일요일

Reviving a 10-year old cordless vacuum. Li-ion battery upgrade. It's alive!

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Parts 10 x high-drain 18650 Li-ion cells 5s Li-ion protection board Soft start circuit MOSFET (STP80NF55) 2 x 100k ohm resistor 4.7uF capaci...
2020년 5월 17일 일요일

Water bottle battery for bicycle lights

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1. Parts: Sanyo 20700 x 6 8A PCB and M/F Molex connectors 16AWG stranded wire DC extension cord 2. Weld taps on cells: for 8.4V output batte...
2020년 4월 19일 일요일

LED headlight - Radio noise filter

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After installing a pair of retrofit LED headlight bulbs, I started getting noise when listening FM radio using my care stereo. The RF noise...
2019년 12월 15일 일요일

2s Li-ion battery (bicycle light) charger for cars

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I made this for charging my bicycle light battery pack in the car. 1. A TP5100 charging module (ebay) has been used 2. Cut the co...

Multi-purpose variable voltage DC power supply for cars

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Intended use: charging laptops and smartphones in cars, for example, at a campsite without an electricity hook-up. Features: USB PD 1...

LED turn signal relay MOD

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1. Remove turn-signal relay from the car (TOYOTA 81980-02030) 2. The stock relay comes with a 0.03 Ohm current-sensing resistor, whic...