Soft Power Switch - SparkFun SPX-17870

Index: SPF-19509 EAN: 5904422364526
A soft power switch that works in a similar way to the button on a laptop. One press will turn the system on, a sequence of presses can turn the system off, and in the event of an emergency, pressing and holding the button will allow for an emergency power disconnect. This is an ideal board for projects using battery power. The Sense / Control pin allows you to read the current state of the switch. The board is equipped with two JST connectors for battery connection.
Soft Power Switch - SparkFun SPX-17870
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Manufacturer: SparkFun

Product Description: Soft Power Switch - SparkFun SPX-17870

A soft powerswitchthat works in a similar way to the button on a laptop. One press will turn the system on, a sequence of presses can turn the system off, and in the event of anemergency, pressing and holding the button will allow foran emergency power disconnect. This is an ideal board for projects using battery power. The Sense / Control pin allows you to read the current state of the switch. The board is equipped with twoJSTconnectors for battery connection, the module is also equipped withLi-Polbattery charger circuit. There is also additional pin on the board, which allows you to read current consumption by the system. It works with voltage up to 12 V. It is equipped with a 3.3 V diode to protect the system from overvoltage.

The soft power switch is an experimental product from the SparX series. These are advanced solutions that do not go into regular production. They are created in very small quantities. They are tested by SparkFun but do not have its technical support.

Miękki przełącznik zasilaniaSoft power switch - SparkFun.
Przykład działania modułu
Example of soft switch module functioning.

Example of module usage

The most common use case is more or less like this:

  • The microcontroller starts executing code and checks if the power button is still pressed for X milliseconds.
  • If not, just tap it, go to sleep.
  • If yes, turn it on and run a normal program.

Later...

  • The user presses the power button in the normal program.
  • If the power button is pressed for
  • If the power button is pressed for >X milliseconds, it's time to shut down.

The module has a defect in the 22 uF capacitor used, which requires an override time of 13 seconds. Under normal conditions, the system will turn on as fast as it is specified in the code, so the problem should not arise, but there may be a problem with the long turn-off time of 13 seconds. By using an external button, this problem is completely eliminated.

Specification of soft power switch module

  • Operating voltage: up to 12 V
  • Maximum load: 4 A
  • Current consumption: up to 50 nA
  • Power status monitoring
  • Two JST 2.0 connectors for battery connection
  • Built-in Li-Pol battery charger
Miękki przełącznik zasilaniaSoft power switch.
Switch - type2 monostable

Same-day shipping

  • Crediting the payment for the order on our account on a business day before 10:00 AM means sending the goods on the same day.
  • All packages are being delivered by GLS Group courier and covered with insurance up to 1200 EUR.
  • You will receive a link to track your package and monitor the progress of delivery as soon as it is shipped.

Terms of delivery 

GLS - zone 1

Austria, Belgium, Croatia, The Czech Republic, Denmark, Germany, Netherlands, Poland, Slovakia 

  • Delivery time: 2-4 days
  • Delivery cost: from 4.18 EUR
  • Insurance: 1200 EUR
GLS - zone 2

Bulgaria, Estonia, France, Hungary, Italy, Latvia, Lithuania, Luxembourg, Portugal, Romania, San Marino, Slovenia

  • Delivery time: 2-5 days
  • Delivery cost: from 5.35 EUR
  • Insurance: 1200 EUR
GLS - zone 3

Finland, Greece, Ireland, Spain, Sweden 

  • Delivery time: 2-7 days
  • Delivery cost: from 7.67 EUR
  • Insurance: 1200 EUR

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