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USB to LR20/Battery D adapter — image 1

USB to LR20/Battery D adapter

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József Krizsik

József Krizsik

@JozsefKrizsik_489345

USB to LR20/Battery D adapter

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Model information

Source
Printables
Category
Electronics
License
GNU General Public License v3.0
DetailsFiles (2)Makes & comments (Makes: 0) (Comments: 0)Remixes (0)Collections (0)Related

USB powered LR20/D battery.

  • mini DC-DC step down converter (11x17mm or smaller)

https://www.aliexpress.com/item/4000938525410.html?spm=a2g0o.productlist.main.5.789ckc51kc51Ig&algo_pvid=a9838bfa-ce18-4c67-84f6-5aed02134cc2&algo_exp_id=a9838bfa-ce18-4c67-84f6-5aed02134cc2-2&pdp_npi=4%40dis%21USD%215.33%213.57%21%21%215.33%213.57%21%402101ef5e17051580594381509eef84%2110000011322538105%21sea%21HU%21137414099%21&curPageLogUid=5gwXJyDe0dRH&utparam-url=scene%3Asearch%7Cquery_from%3A

  • 2 pcs 3,5x15mm wood screw

  • USB A cable

  • some cable and soldering iron

Guide

  • Solder the USB cable +/- to the input of the DC converter

  • Solder some wire to the output of the DC converter

  • place the cable next to the screw (pay attention to the polarity!)

  • Set the output voltage. 1xAA 1.5V, 2xAA 3V, 3xAA 4.5V