See this nice article by Adafruit, which explains how to run an Arduino Uno at 16Mhz with 3.3v. Both the Arduino Pro Mini and the Uno use the same ATmega328p chip, and they claim that even though running at 16Mhz is out of specs, it should work.
As Ignacio mentioned in his answer his answer, there will be no alternative to downclocking the Mini Pro if you want to play it safe and stay within the specs. If you are willing to take the chance, remove the 5v regulator as suggested, and connect a regulated 3.3v to Vin. Consider the hazards; they might include device resets, misbehaving code or malfunctioning I/O pins. If you are using an unregulated 3v voltage source, you will need to step up the voltage - using DC DC step up converter such as this one. (By the way - you could also find a step up converter to 5v - hence problem solved...)
In addition, see this SO answer for more details. The safe clock speed for the ATmega328p operating at 3.3v would be 13.33Mhz. For reference, here is the Safe Operating Area graph from the datasheet supplied in the answer:
enter image description here
See this nice article by Adafruit, which explains how to run an Arduino Uno at 16Mhz with 3.3v. Both the Arduino Pro Mini and the Uno use the same ATmega328p chip, and they claim that even though running at 16Mhz is out of specs, it should work.
As Ignacio mentioned in his answer, there will be no alternative to downclocking the Mini Pro if you want to play it safe and stay within the specs. If you are willing to take the chance, remove the 5v regulator as suggested, and connect a regulated 3.3v to Vin. Consider the hazards; they might include device resets, misbehaving code or malfunctioning I/O pins. If you are using an unregulated 3v voltage source, you will need to step up the voltage - using DC DC step up converter such as this one. (By the way - you could also find a step up converter to 5v - hence problem solved...)
In addition, see this SO answer for more details. The safe clock speed for the ATmega328p operating at 3.3v would be 13.33Mhz. For reference, here is the Safe Operating Area graph from the datasheet supplied in the answer:
enter image description here
See this nice article by Adafruit, which explains how to run an Arduino Uno at 16Mhz with 3.3v. Both the Arduino Pro Mini and the Uno use the same ATmega328p chip, and they claim that even though running at 16Mhz is out of specs, it should work.
As Ignacio mentioned in his answer, there will be no alternative to downclocking the Mini Pro if you want to play it safe and stay within the specs. If you are willing to take the chance, remove the 5v regulator as suggested, and connect a regulated 3.3v to Vin. Consider the hazards; they might include device resets, misbehaving code or malfunctioning I/O pins. If you are using an unregulated 3v voltage source, you will need to step up the voltage - using DC DC step up converter such as this one. (By the way - you could also find a step up converter to 5v - hence problem solved...)
In addition, see this SO answer for more details. The safe clock speed for the ATmega328p operating at 3.3v would be 13.33Mhz. For reference, here is the Safe Operating Area graph from the datasheet supplied in the answer:
enter image description here
See this nice article by Adafruit, which explains how to run an Arduino Uno at 16Mhz with 3.3v. Both the Arduino Pro Mini and the Uno use the same ATmega328p chip, and they claim that even though running at 16Mhz is out of specs, it should work.
As Ignacio mentioned in his answer, there will be no alternative to downclocking the Mini Pro if you want to play it safe and stay within the specs. If you are willing to take the chance, remove the 5v regulator as suggested, and connect a regulated 3.3v to Vin. Consider the hazards; they might include device resets, misbehaving code or malfunctioning I/O pins. If you are using an unregulated 3v voltage source, you will need to step up the voltage - using DC DC step up converter such as this one. (By the way - you could also find a step up converter to 5v - hence problem solved...)
In addition, see this SO answer this SO answer for more details. The safe clock speed for the ATmega328p operating at 3.3v would be 13.33Mhz. For reference, here is the Safe Operating Area graph from the datasheet supplied in the answer:
enter image description here
See this nice article by Adafruit, which explains how to run an Arduino Uno at 16Mhz with 3.3v. Both the Arduino Pro Mini and the Uno use the same ATmega328p chip, and they claim that even though running at 16Mhz is out of specs, it should work.
As Ignacio mentioned in his answer, there will be no alternative to downclocking the Mini Pro if you want to play it safe and stay within the specs. If you are willing to take the chance, remove the 5v regulator as suggested, and connect a regulated 3.3v to Vin. Consider the hazards; they might include device resets, misbehaving code or malfunctioning I/O pins. If you are using an unregulated 3v voltage source, you will need to step up the voltage - using DC DC step up converter such as this one. (By the way - you could also find a step up converter to 5v - hence problem solved...)
In addition, see this SO answer for more details. The safe clock speed for the ATmega328p operating at 3.3v would be 13.33Mhz. For reference, here is the Safe Operating Area graph from the datasheet supplied in the answer:
enter image description here
See this nice article by Adafruit, which explains how to run an Arduino Uno at 16Mhz with 3.3v. Both the Arduino Pro Mini and the Uno use the same ATmega328p chip, and they claim that even though running at 16Mhz is out of specs, it should work.
As Ignacio mentioned in his answer, there will be no alternative to downclocking the Mini Pro if you want to play it safe and stay within the specs. If you are willing to take the chance, remove the 5v regulator as suggested, and connect a regulated 3.3v to Vin. Consider the hazards; they might include device resets, misbehaving code or malfunctioning I/O pins. If you are using an unregulated 3v voltage source, you will need to step up the voltage - using DC DC step up converter such as this one. (By the way - you could also find a step up converter to 5v - hence problem solved...)
In addition, see this SO answer for more details. The safe clock speed for the ATmega328p operating at 3.3v would be 13.33Mhz. For reference, here is the Safe Operating Area graph from the datasheet supplied in the answer:
enter image description here
See this nice article by Adafruit, which explains how to run an Arduino Uno at 16Mhz with 3.3v. Both the Arduino Pro Mini and the Uno use the same ATmega328p chip, and they claim that even though running at 16Mhz is out of specs, it should work.
As Ignacio mentioned in his answer, there will be no alternative to downclocking the Mini Pro if you want to play it safe and stay within the specs. If you are willing to take the chance, justremove the 5v regulator as suggested, and connect a regulated 3.3v to Vin as suggested, and consider. Consider the hazards, whichhazards; they might include device resets, misbehaving code or malfunctioning I/O pins. If you are using an unregulated 3v voltage source, you will need to step up the voltage - using DC DC step up converter such as this one. (By the way - you could also find a step up converter to 5v - hence problem solved...)
In addition, see this SO answer for more details. The safe clock speed for the ATmega328p operating at 3.3v would be 13.33Mhz. For reference, here is the Safe Operating Area graph from the datasheet supplied in the answer:
enter image description here
See this nice article by Adafruit, which explains how to run an Arduino Uno at 16Mhz with 3.3v. Both the Arduino Pro Mini and the Uno use the same ATmega328p chip, and they claim that even though running at 16Mhz is out of specs, it should work.
As Ignacio mentioned in his answer, there will be no alternative to downclocking the Mini Pro if you want to play it safe and stay within the specs. If you are willing to take the chance, just connect a regulated 3.3v to Vin as suggested, and consider the hazards, which might include device resets, misbehaving code or malfunctioning I/O pins. If you are using an unregulated 3v voltage source, you will need to step up the voltage - using DC DC step up converter such as this one. (By the way - you could also find a step up converter to 5v - hence problem solved...)
In addition, see this SO answer for more details. The safe clock speed for the ATmega328p operating at 3.3v would be 13.33Mhz. For reference, here is the Safe Operating Area graph from the datasheet supplied in the answer:
enter image description here
See this nice article by Adafruit, which explains how to run an Arduino Uno at 16Mhz with 3.3v. Both the Arduino Pro Mini and the Uno use the same ATmega328p chip, and they claim that even though running at 16Mhz is out of specs, it should work.
As Ignacio mentioned in his answer, there will be no alternative to downclocking the Mini Pro if you want to play it safe and stay within the specs. If you are willing to take the chance, remove the 5v regulator as suggested, and connect a regulated 3.3v to Vin. Consider the hazards; they might include device resets, misbehaving code or malfunctioning I/O pins. If you are using an unregulated 3v voltage source, you will need to step up the voltage - using DC DC step up converter such as this one. (By the way - you could also find a step up converter to 5v - hence problem solved...)
In addition, see this SO answer for more details. The safe clock speed for the ATmega328p operating at 3.3v would be 13.33Mhz. For reference, here is the Safe Operating Area graph from the datasheet supplied in the answer:
enter image description here