Pimoroni Galactic Unicorn Hello World - Revision history

Mol: /* Connect to Arduino UNO */

2023-12-07T07:58:05Z

Connect to Arduino UNO

← Older revision		Revision as of 10:58, 7 December 2023
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	print(a)		print(a)
	</syntaxhighlight>		</syntaxhighlight>

			The Arduino Code is in Girhub: https://github.com/tinkertechtrove/pico-pi-playing/blob/main/arduino-i2c/sketch_i2c_sub/sketch_i2c_sub.ino

Mol: /* Connect to Arduino UNO */

2023-12-07T07:53:58Z

Connect to Arduino UNO

← Older revision		Revision as of 10:53, 7 December 2023
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	More information:		More information:
	https://www.youtube.com/watch?v=Wkk1aNWj6sQ		* https://www.youtube.com/watch?v=Wkk1aNWj6sQ
			* https://www.youtube.com/watch?v=Wh-SjhngILU

	== Programming ==		== Programming ==

Mol: /* Connect to Arduino UNO */

2023-12-07T07:49:51Z

Connect to Arduino UNO

← Older revision		Revision as of 10:49, 7 December 2023
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	Pull-up resistors: I2C Bus Pullup Resistor Calculation (Texas Instruments, Feb 2015).		Pull-up resistors: I2C Bus Pullup Resistor Calculation (Texas Instruments, Feb 2015).

			<syntaxhighlight lang="python">
			from amchine import Pin, I2C
			from time import sleep

			MSG_SIZE=15
			i2c = I2C(0, scl=PIN(17), sda=PIN(16), freq=100000)
			addr = i2c.scan()[]
			i2c.writeto(addr, 'Hi from Pi')
			sleep(0.1)
			a = i2c.readfrom(addr, MSG_SIZE)
			print(a)
			</syntaxhighlight>

Mol: /* Connecting to other sensors */

2023-12-07T07:47:15Z

Connecting to other sensors

← Older revision		Revision as of 10:47, 7 December 2023
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	== Connecting to other sensors ==		== Connecting to other sensors ==

	2 x QW/ST Connections (4 pin 1.00 mm pitch Stemma QT / Qwiic). Stemma QT works on both, 5V and 3.3V logic, but Pico W is a 3.3 V system.		2 x QW/ST Connections (4 pin 1.00 mm pitch Stemma QT / Qwiic). Stemma QT works on both, 5V and 3.3V logic, but Pico W is a 3.3 V system and Arduino Uno 5V.


	* Stemma is Adafruit's [three or four pin JST PH with 2.00 mm pitch. The three pin for analog IO devices and four pin is for I2C.] Stemma QT is a smaller version of the four pin Stemma format, with a 1.0 mm pitch, and is only for I2C.		* Stemma is Adafruit's [three or four pin JST PH with 2.00 mm pitch. The three pin for analog IO devices and four pin is for I2C.] Stemma QT is a smaller version of the four pin Stemma format, with a 1.0 mm pitch, and is only for I2C.
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	Galactic Unicorn uses GP4 and GP5 for its I2C interface. You can use the constants in the shared pimoroni module to set up the I2C interface. https://github.com/pimoroni/pimoroni-pico/blob/main/micropython/modules/galactic_unicorn/README.md#using-breakouts		Galactic Unicorn uses GP4 and GP5 for its I2C interface. You can use the constants in the shared pimoroni module to set up the I2C interface. https://github.com/pimoroni/pimoroni-pico/blob/main/micropython/modules/galactic_unicorn/README.md#using-breakouts

			Master, Slave

	More information		More information
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	* https://arduino.stackexchange.com/questions/16292/sending-and-receiving-different-types-of-data-via-i2c-in-arduino		* https://arduino.stackexchange.com/questions/16292/sending-and-receiving-different-types-of-data-via-i2c-in-arduino

	~~Check this~~: https://www.youtube.com/watch?v=Wkk1aNWj6sQ		=== Connect to Arduino UNO ===

			Pico W is a 3.3 V system and Uno 5V system, so a logic level shifter (converter) should be used.

			Pull-up resistors: I2C Bus Pullup Resistor Calculation (Texas Instruments, Feb 2015).


			More information:
			https://www.youtube.com/watch?v=Wkk1aNWj6sQ

	== Programming ==		== Programming ==

Mol: /* Connecting to other sensors */

2023-12-03T20:06:51Z

Connecting to other sensors

← Older revision		Revision as of 23:06, 3 December 2023
Line 5:		Line 5:
	== Connecting to other sensors ==		== Connecting to other sensors ==

	2 x QW/ST Connections (4 pin 1.00 mm pitch Stemma QT / Qwiic). Stemma QT works on both, 5V and 3.3V logic.		2 x QW/ST Connections (4 pin 1.00 mm pitch Stemma QT / Qwiic). Stemma QT works on both, 5V and 3.3V logic, but Pico W is a 3.3 V system.


	* Stemma is Adafruit's [three or four pin JST PH with 2.00 mm pitch. The three pin for analog IO devices and four pin is for I2C.] Stemma QT is a smaller version of the four pin Stemma format, with a 1.0 mm pitch, and is only for I2C.		* Stemma is Adafruit's [three or four pin JST PH with 2.00 mm pitch. The three pin for analog IO devices and four pin is for I2C.] Stemma QT is a smaller version of the four pin Stemma format, with a 1.0 mm pitch, and is only for I2C.
	* Qwiic is Sparkfun's connector type		* Qwiic is Sparkfun's connector type

Mol: /* Connecting to other sensors */

2023-12-03T20:01:25Z

Connecting to other sensors

← Older revision		Revision as of 23:01, 3 December 2023
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	* https://github.com/nickgammon/I2C_Anything		* https://github.com/nickgammon/I2C_Anything
	* https://arduino.stackexchange.com/questions/16292/sending-and-receiving-different-types-of-data-via-i2c-in-arduino		* https://arduino.stackexchange.com/questions/16292/sending-and-receiving-different-types-of-data-via-i2c-in-arduino

			Check this: https://www.youtube.com/watch?v=Wkk1aNWj6sQ

	== Programming ==		== Programming ==

Mol: /* Connecting to other sensors */

2023-12-03T19:17:15Z

Connecting to other sensors

← Older revision		Revision as of 22:17, 3 December 2023
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	Stemma QT		Stemma QT
	* ~~Green~~ for ~~SCL~~		* Black for GND
	* White for SDA
	* Red for V+		* Red for V+
	* ~~Black~~ for ~~GND~~		* Blue for SDA
			* Yellow for SCL

	Galactic Unicorn uses GP4 and GP5 for its I2C interface. You can use the constants in the shared pimoroni module to set up the I2C interface. https://github.com/pimoroni/pimoroni-pico/blob/main/micropython/modules/galactic_unicorn/README.md#using-breakouts		Galactic Unicorn uses GP4 and GP5 for its I2C interface. You can use the constants in the shared pimoroni module to set up the I2C interface. https://github.com/pimoroni/pimoroni-pico/blob/main/micropython/modules/galactic_unicorn/README.md#using-breakouts

Mol: /* Connecting to other sensors */

2023-12-03T19:15:08Z

Connecting to other sensors

← Older revision		Revision as of 22:15, 3 December 2023
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	The buttons and the QW/ST connectors are the only means to interface with Galactic Unicorn, and Wifi of course. It is possible to get StemmaQT to male jumper wire adapters for use with I2C devices or for basic GPIO access.		The buttons and the QW/ST connectors are the only means to interface with Galactic Unicorn, and Wifi of course. It is possible to get StemmaQT to male jumper wire adapters for use with I2C devices or for basic GPIO access.

			Stemma QT
			* Green for SCL
			* White for SDA
			* Red for V+
			* Black for GND

	Galactic Unicorn uses GP4 and GP5 for its I2C interface. You can use the constants in the shared pimoroni module to set up the I2C interface. https://github.com/pimoroni/pimoroni-pico/blob/main/micropython/modules/galactic_unicorn/README.md#using-breakouts		Galactic Unicorn uses GP4 and GP5 for its I2C interface. You can use the constants in the shared pimoroni module to set up the I2C interface. https://github.com/pimoroni/pimoroni-pico/blob/main/micropython/modules/galactic_unicorn/README.md#using-breakouts

Mol: /* Connecting to other sensors */

2023-12-03T18:46:59Z

Connecting to other sensors

← Older revision		Revision as of 21:46, 3 December 2023
Line 5:		Line 5:
	== Connecting to other sensors ==		== Connecting to other sensors ==

	2 x QW/ST Connections (4 pin 1.00 mm pitch Stemma QT / Qwiic)		2 x QW/ST Connections (4 pin 1.00 mm pitch Stemma QT / Qwiic). Stemma QT works on both, 5V and 3.3V logic.
	* Stemma is Adafruit's [three or four pin JST PH with 2.00 mm pitch. The three pin for analog IO devices and four pin is for I2C.] Stemma QT is a smaller version of the four pin Stemma format, with a 1.0 mm pitch, and is only for I2C.		* Stemma is Adafruit's [three or four pin JST PH with 2.00 mm pitch. The three pin for analog IO devices and four pin is for I2C.] Stemma QT is a smaller version of the four pin Stemma format, with a 1.0 mm pitch, and is only for I2C.
	* Qwiic is Sparkfun's connector type		* Qwiic is Sparkfun's connector type

Mol: /* Programming */

2023-11-25T07:21:09Z

Programming

← Older revision		Revision as of 10:21, 25 November 2023
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	=== Thonny ===		=== Thonny ===

	# Connect the USB cable while '''bootsel''' button is pressed: RPI-RP2 is found on device manager.		# Connect the USB cable while '''bootsel''' button is pressed: RPI-RP2 is found on device manager. If not working, check other cable.
	# Copy the ''pimoroni-galactic_unicorn-v1.20.6-micropython.uf2'' to RPI-RP2.		# Copy the ''pimoroni-galactic_unicorn-v1.20.6-micropython.uf2'' to RPI-RP2.
	# Start thonny; see the right down corner that correct device is connected. If not, choose it from the list (right down corner).		# Start thonny; see the right down corner that correct device is connected. If not, choose it from the list (right down corner).