Minimalist Arduino - Revision history

Marcin at 01:45, 5 September 2020

2020-09-05T01:45:16Z

← Older revision		Revision as of 01:45, 5 September 2020
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	\|image = [[File:~~arduino~~.jpg\|200px\|alt=Example alt text]]		\|image = [[File:minarduino.jpg\|200px\|alt=Example alt text]]
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	\|caption = Short description		\|caption = Short description

Marcin at 01:45, 5 September 2020

2020-09-05T01:45:03Z

← Older revision		Revision as of 01:45, 5 September 2020
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	\|titlestyle =		\|titlestyle =

	\|image = [[File:~~check~~.~~png~~\|200px\|alt=Example alt text]]		\|image = [[File:arduino.jpg\|200px\|alt=Example alt text]]
	\|imagestyle =		\|imagestyle =
	\|caption = Short description		\|caption = Short description

Marcin: /* Links */

2020-09-05T00:37:14Z

Links

← Older revision		Revision as of 00:37, 5 September 2020
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	=Links=		=Links=
	#Minimalist Arduino Log		*[[Minimalist Arduino Log]]

Marcin: Replaced content with "{{subst:dev+|1=Minimalist Arduino}} =Links= #Minimalist Arduino Log"

2020-09-05T00:36:48Z

Replaced content with "{{subst:dev+|1=Minimalist Arduino}} =Links= #Minimalist Arduino Log"

Show changes

Kienle: /* Assessment */

2020-08-07T17:05:29Z

Assessment

← Older revision		Revision as of 17:05, 7 August 2020
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	===VCC (pin 7/(20))===		===VCC (pin 7/(20))===
	* At 16MHz the operating voltage is 3.78..5.5V.		* At 16MHz the operating voltage is 3.78..5.5V. [https://electronics.stackexchange.com/a/117673]

	===RESET (pin 1)===		===RESET (pin 1)===

Kienle: /* March 2020 STEAM Camp */

2020-08-07T16:56:00Z

March 2020 STEAM Camp

← Older revision		Revision as of 16:56, 7 August 2020
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	==March 2020 STEAM Camp==		==March 2020 STEAM Camp==
	<html><iframe src="https://www.facebook.com/plugins/post.php?href=https%3A%2F%2Fwww.facebook.com%2Fmarcin.jakubowski.378%2Fposts%2F10220051505135085&show_text=true&width=552&height=697&appId" width="552" height="697" style="border:none;overflow:hidden" scrolling="no" frameborder="0" allowTransparency="true" allow="encrypted-media"></iframe></html>		<html><iframe src="https://www.facebook.com/plugins/post.php?href=https%3A%2F%2Fwww.facebook.com%2Fmarcin.jakubowski.378%2Fposts%2F10220051505135085&show_text=true&width=552&height=697&appId" width="552" height="697" style="border:none;overflow:hidden" scrolling="no" frameborder="0" allowTransparency="true" allow="encrypted-media"></iframe></html>

			[https://www.facebook.com/marcin.jakubowski.378%2Fposts%2F10220051505135085 FB link]

	=From Japan in 2009=		=From Japan in 2009=

Kienle: /* Assessment */

2020-08-07T16:51:00Z

Assessment

← Older revision		Revision as of 16:51, 7 August 2020
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	Thus, this would completely work to control things when powered up, such as a minimalist CEB Press. This could be a great apocalyptic option if one had components but no circuit boards/proto boards of any type to solder/plug onto.		Thus, this would completely work to control things when powered up, such as a minimalist CEB Press. This could be a great apocalyptic option if one had components but no circuit boards/proto boards of any type to solder/plug onto.

			===VCC (pin 7/(20))===
			* At 16MHz the operating voltage is 3.78..5.5V.

	===RESET (pin 1)===		===RESET (pin 1)===

Kienle: /* Oscillator Schematic */

2020-08-07T16:33:44Z

Oscillator Schematic

← Older revision		Revision as of 16:33, 7 August 2020
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	[[File:49AOJhP.png]]		[[File:49AOJhP.png]]

	From the ATmega328 datasheet.		From the ATmega328 datasheet. (XTAL1 is pin 9, XTAL2 is pin 10.)

	=Sourcing=		=Sourcing=

Kienle: /* RESET (pin 1) */

2020-08-07T16:28:50Z

RESET (pin 1)

← Older revision		Revision as of 16:28, 7 August 2020
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	===RESET (pin 1)===		===RESET (pin 1)===
	* RESET can be left unconnected ("floating") because it has a (weak) internal pull-up resistor.		* RESET can be left unconnected ("floating") because it has a (weak) internal pull-up resistor.
	** AN2519: "The Reset line has an internal pull-up resistor. If the environment is noisy, it can be insufficient and Reset may occur sporadically."		** AN2519: "The Reset line has an internal pull-up resistor. If the environment is noisy, it can be insufficient and Reset may occur sporadically." [https://www.microchip.com/wwwAppNotes/AppNotes.aspx?appnote=en591472]

	* RESET can be directly connected to +5V to have a defined voltage potential. The datasheet says: "Connecting unused pins directly to VCC or GND is not recommended, since this may cause excessive currents if the pin is accidentally configured as an output". However, in normal usage RESET is never reconfigured as a digital port (in fact, this can be only done by blowing the RSTDISBL fuse and not undone - nobody sane would do it!?), so directly connecting RESET to +5V seems acceptable.		* RESET can be directly connected to +5V to have a defined voltage potential. The datasheet says: "Connecting unused pins directly to VCC or GND is not recommended, since this may cause excessive currents if the pin is accidentally configured as an output". However, in normal usage RESET is never reconfigured as a digital port (in fact, this can be only done by blowing the RSTDISBL fuse and not undone - nobody sane would do it!?), so directly connecting RESET to +5V seems acceptable.

Kienle: /* RESET (pin 1) */

2020-08-07T16:28:08Z

RESET (pin 1)

← Older revision		Revision as of 16:28, 7 August 2020
Line 23:		Line 23:
	===RESET (pin 1)===		===RESET (pin 1)===
	* RESET can be left unconnected ("floating") because it has a (weak) internal pull-up resistor.		* RESET can be left unconnected ("floating") because it has a (weak) internal pull-up resistor.
			** AN2519: "The Reset line has an internal pull-up resistor. If the environment is noisy, it can be insufficient and Reset may occur sporadically."

	* RESET can be directly connected to +5V to have a defined voltage potential. The datasheet says: "Connecting unused pins directly to VCC or GND is not recommended, since this may cause excessive currents if the pin is accidentally configured as an output". However, in normal usage RESET is never reconfigured as a digital port (in fact, this can be only done by blowing the RSTDISBL fuse and not undone - nobody sane would do it!?), so directly connecting RESET to +5V seems acceptable.		* RESET can be directly connected to +5V to have a defined voltage potential. The datasheet says: "Connecting unused pins directly to VCC or GND is not recommended, since this may cause excessive currents if the pin is accidentally configured as an output". However, in normal usage RESET is never reconfigured as a digital port (in fact, this can be only done by blowing the RSTDISBL fuse and not undone - nobody sane would do it!?), so directly connecting RESET to +5V seems acceptable.
	** According to the datasheet: If +5V is connected, then there is a reset current of approx. 0A. If 0V (GND) is connected, it is approx. 100uA.		** According to the datasheet: If +5V is connected, then there is a reset current of approx. 0A. If 0V (GND) is connected, it is approx. 100uA.