Looking for simple on off touch switch for 3.7v, appx 2.0a device. Considering the at42qt1012, but it looks like it starts at high power, then shifts to low power? Was also looking at push button power switch breakout....Id number 1400 but need it to be silent...no click?
Also...need to solder wires to the input output power gnd, etc as this will enclosed in shrink tubing for the device...possible?
Any suggestions?
On/off switch for project
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- adafruit_support_mike
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Re: On/off switch for project
How much current does the switch need to control?
- adafruit_support_bill
- Posts: 88099
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Re: On/off switch for project
The at42qt1012 is a logic-level switch. It can't switch 2A by itself. But you can use the output of the at42qt1012 to control a transistor to switch the higher current. For 2A, you would need a relatively beefy transistor. Since you are operating at 3.7v, the TIP120 would work.
https://www.adafruit.com/product/976
https://www.adafruit.com/product/976
Please be positive and constructive with your questions and comments.