ElectronicLoad - Revision history

Bertrik Sikken: /* Intro */

2021-11-28T22:05:04Z

Intro

← Older revision		Revision as of 22:05, 28 November 2021
Line 23:		Line 23:
	* https://hackaday.com/2021/11/17/scpi-on-teaching-your-devices-the-lingua-franca-of-laboratories/		* https://hackaday.com/2021/11/17/scpi-on-teaching-your-devices-the-lingua-franca-of-laboratories/
	* https://www.eevblog.com/forum/projects/smuview-a-sigrok-gui-for-power-supplies-multimeters-and-more/		* https://www.eevblog.com/forum/projects/smuview-a-sigrok-gui-for-power-supplies-multimeters-and-more/
			* inspiration: https://community.element14.com/technologies/test-and-measurement/b/blog/posts/programmable-electronic-load---scpi-interface-and-error-handling

	== Design ==		== Design ==

Bertrik Sikken: /* Random thoughts */

2021-11-22T14:28:25Z

Random thoughts

← Older revision		Revision as of 14:28, 22 November 2021
Line 52:		Line 52:
	* automatically reset cumulative counters when starting a log		* automatically reset cumulative counters when starting a log
	* conversion from SI units to other units, like mAh, Wh, etc?		* conversion from SI units to other units, like mAh, Wh, etc?
			* use SCPI to allow the electronic load to be controlled by a script or a GUI device, the script can then do intelligent stuff like sequencing through a battery capacity measurement cycle, solar cell P-V cycle, etc

	== Platform IO ==		== Platform IO ==

Bertrik Sikken: /* Software */

2021-11-22T14:26:40Z

Software

← Older revision		Revision as of 14:26, 22 November 2021
Line 39:		Line 39:
	=== Software ===		=== Software ===
	The [https://github.com/bertrik/ElectronicLoad source code is on github].		The [https://github.com/bertrik/ElectronicLoad source code is on github].

	~~Building blocks:~~
	* USB serial port, to receive commands from the user
	* command interpreter, to transform user input into actions
	* measurement loop, that continuously calculates voltage and current, and integrates them (from mA to mAh for example)
	* control loop, that maintains the desired behaviour (constant current, power, resistance)
	* logging logic, to log measured values to the output
	* sequencing logic, to perform the steps needed for particular measurement mode, e.g. solar panel characterisation

	=== Random thoughts ===		=== Random thoughts ===

Bertrik Sikken: /* Intro */

2021-11-20T16:59:15Z

Intro

← Older revision		Revision as of 16:59, 20 November 2021
Line 22:		Line 22:
	* investigate the SCPI protocol: https://www.circuitspecialists.com/images/ARRAY%20372x%20Series%20Electronic%20Load%20SCPI%20%20Programming%20Guide.pdf		* investigate the SCPI protocol: https://www.circuitspecialists.com/images/ARRAY%20372x%20Series%20Electronic%20Load%20SCPI%20%20Programming%20Guide.pdf
	* https://hackaday.com/2021/11/17/scpi-on-teaching-your-devices-the-lingua-franca-of-laboratories/		* https://hackaday.com/2021/11/17/scpi-on-teaching-your-devices-the-lingua-franca-of-laboratories/
			* https://www.eevblog.com/forum/projects/smuview-a-sigrok-gui-for-power-supplies-multimeters-and-more/

	== Design ==		== Design ==

Bertrik Sikken: /* Intro */

2021-11-19T15:22:33Z

Intro

← Older revision		Revision as of 15:22, 19 November 2021
Line 19:		Line 19:
	* draw a pre-defined current waveform from a battery, e.g. to simulate the current drawn by a mobile phone (short high current peaks, with longer plateaus in between)		* draw a pre-defined current waveform from a battery, e.g. to simulate the current drawn by a mobile phone (short high current peaks, with longer plateaus in between)

	Stuff to ~~TODO~~:		Stuff to investigate:
	* investigate the SCPI protocol: https://www.circuitspecialists.com/images/ARRAY%20372x%20Series%20Electronic%20Load%20SCPI%20%20Programming%20Guide.pdf		* investigate the SCPI protocol: https://www.circuitspecialists.com/images/ARRAY%20372x%20Series%20Electronic%20Load%20SCPI%20%20Programming%20Guide.pdf
			* https://hackaday.com/2021/11/17/scpi-on-teaching-your-devices-the-lingua-franca-of-laboratories/

	== Design ==		== Design ==

Bertrik Sikken: /* Intro */

2021-11-19T15:00:55Z

Intro

← Older revision		Revision as of 15:00, 19 November 2021
Line 18:		Line 18:
	* just measure current drawn by a device, at a high time resolution, and determine the amount of charge used per use cycle.		* just measure current drawn by a device, at a high time resolution, and determine the amount of charge used per use cycle.
	* draw a pre-defined current waveform from a battery, e.g. to simulate the current drawn by a mobile phone (short high current peaks, with longer plateaus in between)		* draw a pre-defined current waveform from a battery, e.g. to simulate the current drawn by a mobile phone (short high current peaks, with longer plateaus in between)

			Stuff to TODO:
			* investigate the SCPI protocol: https://www.circuitspecialists.com/images/ARRAY%20372x%20Series%20Electronic%20Load%20SCPI%20%20Programming%20Guide.pdf

	== Design ==		== Design ==

Bertrik Sikken: /* Installation */

2020-02-06T13:04:01Z

Installation

← Older revision		Revision as of 13:04, 6 February 2020
Line 63:		Line 63:
	=== Installation ===		=== Installation ===
	First you need to install pip, e.g. for debian Linux:		First you need to install pip, e.g. for debian Linux:
	sudo apt~~-get~~ install python-pip		sudo apt install python-pip

	Then you can use pip to install platformio		Then you can use pip to install platformio

Bertrik Sikken: /* Intro */

2018-09-04T16:03:14Z

Intro

← Older revision		Revision as of 16:03, 4 September 2018
Line 11:		Line 11:

	This page is about software I'm writing for my brother who is developing an 'electronic load'.		This page is about software I'm writing for my brother who is developing an 'electronic load'.
	An electronic load is a ~~thing~~ that draws current from a power source in a well-defined way.		An electronic load is a device that draws current from a power source in a well-defined way.

	~~A possible~~ use ~~case for an electronic load is to~~ discharge a battery with a constant current, while recording the voltage so you can make a nice discharge graph.		Possible use cases:
			* discharge a battery with a constant current, while recording the voltage so you can make a nice discharge graph and verify the total battery capacity.
	~~Another user case is to test~~ a solar panel, ~~drawing variable current from it while~~ measuring the voltage, to find the point where it delivers most power.		* characterize a solar panel, measuring the voltage while sweeping the current, to find the point where it delivers most power.
			* just measure current drawn by a device, at a high time resolution, and determine the amount of charge used per use cycle.
	~~Perhaps yet another use case is~~ just to measure current drawn by a ~~specific~~ device at a high time resolution, and determine the amount of charge used per use cycle.		* draw a pre-defined current waveform from a battery, e.g. to simulate the current drawn by a mobile phone (short high current peaks, with longer plateaus in between)

	== Design ==		== Design ==

Bertrik Sikken: Bertrik Sikken moved page ElectronicLoadR2 to ElectronicLoad: Universal

2018-09-02T20:41:08Z

Bertrik Sikken moved page ElectronicLoadR2 to ElectronicLoad: Universal

← Older revision	Revision as of 20:41, 2 September 2018
(No difference)

Bertrik Sikken: r2->r3

2018-09-02T20:40:04Z

r2->r3

← Older revision		Revision as of 20:40, 2 September 2018
Line 1:		Line 1:
	{{Project		{{Project
	\|Name=~~ElectronicLoadV2~~		\|Name=ElectronicLoad
	\|Picture=ElectronicLoadV2.png		\|Picture=ElectronicLoadV2.png
	\|Omschrijving=Software voor Electronic Load R2		\|Omschrijving=Software voor Electronic Load
	\|Status=Completed		\|Status=Completed
	\|Contact=bertrik		\|Contact=bertrik
Line 22:		Line 22:

	=== Hardware ===		=== Hardware ===
	For the hardware design, see https://www.tindie.com/products/jaspersikken/jaspers-electronic-load-r2/		For the hardware design, see https://www.tindie.com/products/jaspersikken/jaspers-electronic-load-r3/

	The basic principle of operation is that the electronic load has a circuit with a mosfet controlled by a microcontroller to draw a configurable constant current.		The basic principle of operation is that the electronic load has a circuit with a mosfet controlled by a microcontroller to draw a configurable constant current.
Line 33:		Line 33:

	=== Software ===		=== Software ===
	The [https://github.com/bertrik/~~ElectronicLoadR2~~ source code is on github].		The [https://github.com/bertrik/ElectronicLoad source code is on github].

	Building blocks:		Building blocks: