Breadboard - Revision history

Adamcolton: /* Sockets */

2021-04-18T15:49:16Z

Sockets

← Older revision		Revision as of 15:49, 18 April 2021
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	* General IO???		* General IO???

	I'm stuck on IO. One argument is to give every socket a set of pins. But some modules need a lot of pins and others only need one - power modules need 0 IO. So another argument is make it easy to change with jumpers. The breadboard has 65 rows and the perf board has about 80 perimeter pins.		I'm stuck on IO. One argument is to give every socket a set of pins. But some modules need a lot of pins and others only need one - power modules need 0 IO. So another argument is make it easy to change with jumpers. The breadboard has 65 rows and the perf board has about 80 perimeter pins. I think I'm leaning towards giving every socket just 2 IO dedicated IO pins. Modules that need more can have a soldered ribbon cable making it easy to plug into a breadboard.

	Modules		Modules

2021-04-18T15:46:32Z

← Older revision		Revision as of 15:46, 18 April 2021
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	* Gnd		* Gnd
	* General IO		* General IO
			* I2C (2 pins)
			* SPI (3 pins)
			* General IO???

			I'm stuck on IO. One argument is to give every socket a set of pins. But some modules need a lot of pins and others only need one - power modules need 0 IO. So another argument is make it easy to change with jumpers. The breadboard has 65 rows and the perf board has about 80 perimeter pins.

	Modules		Modules

2021-04-18T15:36:51Z

Sockets

2021-01-08T21:13:43Z

Sockets

← Older revision		Revision as of 21:13, 8 January 2021
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	Simpler would be to just give every module a bank of general IO pins. On one side would be just 2 pins, V+ and ground. On the other would be something like 15 pins.		Simpler would be to just give every module a bank of general IO pins. On one side would be just 2 pins, V+ and ground. On the other would be something like 15 pins. Though I kind of like the idea of also adding a high side driver that provides + and - 10V relative to V+.

	==== Power Module ====		==== Power Module ====

2021-01-05T17:19:49Z

Sockets

← Older revision		Revision as of 17:19, 5 January 2021
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	* Zener diode ( current limit R → zener in parallel with pot and voltage meter)		* Zener diode ( current limit R → zener in parallel with pot and voltage meter)

	Simpler would be to just give every module a bank of general IO pins. ~~Each module~~ would ~~have a sort of trapezoid footprint; 5~~ pins ~~top left~~, 10 pins ~~middle right~~, ~~5 pins bottom left~~.
			Simpler would be to just give every module a bank of general IO pins. On one side would be just 2 pins, V+ and ground. On the other would be something like 15 pins.

			==== Power Module ====
			Buck/Boost that takes power from the main supply at outputs it.
			* Set Voltage
			* Set Current Limit
			* Enable Breaker
			* Output On/Off

			It doesn't make sense to have both current break and current limit, so it will do one or the other.

	=== Storage ===		=== Storage ===

2021-01-05T16:48:53Z

Sockets

← Older revision		Revision as of 16:48, 5 January 2021
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	* V I probe		* V I probe
	* Zener diode ( current limit R → zener in parallel with pot and voltage meter)		* Zener diode ( current limit R → zener in parallel with pot and voltage meter)

			Simpler would be to just give every module a bank of general IO pins. Each module would have a sort of trapezoid footprint; 5 pins top left, 10 pins middle right, 5 pins bottom left.

	=== Storage ===		=== Storage ===

2021-01-05T16:12:56Z

Sockets

← Older revision		Revision as of 16:12, 5 January 2021
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	=== Sockets ===		=== Sockets ===
	Rather than the built in peripherals, I may be able to design a socket system. ~~Maybe 2 or 3 sizes~~. Modules would plug in, they would connect to Power, Vcc and Gnd. Power is the plug level input allowing the module to access higher power where necessary. I could also provide I2C or SPI back to the Arduino.		Rather than the built in peripherals, I may be able to design a socket system. I think the small perf boards I have would be the perfect size. Modules would plug in, they would connect to Power, Vcc and Gnd. Power is the plug level input allowing the module to access higher power where necessary. I could also provide I2C or SPI back to the Arduino.

	Socket Pins		Socket Pins
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	* General IO		* General IO

			Modules
	* LED bank		* LED bank
	* Pots w/ voltage meter		* Pots w/ voltage meter

2021-01-05T16:11:33Z

Sockets

← Older revision		Revision as of 16:11, 5 January 2021
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	=== Sockets ===		=== Sockets ===
	Rather than the built in peripherals, I may be able to design a socket system. Maybe 2 or 3 sizes. Modules would plug in, they would connect to Power, Vcc and Gnd. Power is the plug level input allowing the module to access higher power where necessary. I could also provide I2C or SPI back to the Arduino.		Rather than the built in peripherals, I may be able to design a socket system. Maybe 2 or 3 sizes. Modules would plug in, they would connect to Power, Vcc and Gnd. Power is the plug level input allowing the module to access higher power where necessary. I could also provide I2C or SPI back to the Arduino.

			Socket Pins
			* Plug V+
			* Regulator V+
			* Gnd
			* General IO

	* LED bank		* LED bank
	* Pots		* Pots w/ voltage meter
	* Buttons		* Buttons
	* Switches		* Switches
Line 63:		Line 69:
	* Negative Feedback Op Amp		* Negative Feedback Op Amp
	* V I probe		* V I probe
	* Zener diode ( current limit R → zener in parallel with pot)		* Zener diode ( current limit R → zener in parallel with pot and voltage meter)

	=== Storage ===		=== Storage ===

2020-07-01T15:48:48Z

← Older revision		Revision as of 15:48, 1 July 2020
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	=== Storage ===		=== Storage ===
	I want enough storage built in so that I can store the breadboards not in use, all the socket modules and the wires. And tweesers.		I want enough storage built in so that I can store the breadboards not in use, all the socket modules and the wires. And tweesers.

			== V1 ==
			This all sounds great, but it's a lot of work. I should bootstrap with a simpler version.

			=== Layout/Storage ===
			Since this should be simple, I will prototype this. So 3 boards, sockets, voltage breakout. Everything. Also storage for parts.

			=== Power ===
			Fairly simple - DC jack for input fed into a buck converter. I'll use a standalone voltage module. I can rewire the pot to a nice one on the board. I'll add one of the pico fuses for protection.

	[[Category:Electronics]]		[[Category:Electronics]]

2020-07-01T15:44:09Z

← Older revision		Revision as of 15:44, 1 July 2020
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	I will use an op amp for the current limit. The input will come from a PWM on the Arduino. Op amp feeds a mosfet. https://www.youtube.com/watch?v=tIrfChM1f7Q		I will use an op amp for the current limit. The input will come from a PWM on the Arduino. Op amp feeds a mosfet. https://www.youtube.com/watch?v=tIrfChM1f7Q

			I can have the max current limit relatively low because it's intended to protect sensitive control circuits. If I'm trying to drive power components they can can access the power line directly.

	=== Arduino ===		=== Arduino ===
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	I think the input can be just a rotary encoder. Output could be either and LCD or an OLED. Former is easier, latter gives me more options.		I think the input can be just a rotary encoder. Output could be either and LCD or an OLED. Former is easier, latter gives me more options.

			Arduino Nano has 14 IO (6PWM 6ADC)
			* Current limit (PWM)
			* Current Cutoff (PWM)
			* Voltage limit (PWM)
			* Rotary encoder (3 digital)
			* Power Voltage (ADC)
			* Vcc (ADC)
			* Current (ADC)
			* Display (???)

	=== Sockets ===		=== Sockets ===