USB TTL 9V Stepdown Voltmeter Male Multi Module DIY Gadget

For a number of DIY Projects for me the suitable power sources have been missing . I solved this problem with the self-made multi-module .It provides the continuous control of voltage via USB or 9V. Schematic and Bill of Materials Are required : 9V battery clipjumper cableUSB TTL moduleStep Down ...

By: bastelking



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from Instructables: exploring - technology http://ift.tt/1ydL5SA