I2C adapter for clockport

strim · 31 December 2015, 21:34

I'm working on a small I2C adapter for clockport. This will allow connection of all kind of sensors and cool gadgets to Amiga. Sensors (temperature, pressure, acceleration), LCD displays, keypads, whatever else can talk I2C bus protocol.

It's open source just as any other Sakura project

https://github.com/Sakura-IT/akuhei

Prototype PCB pics:
http://c0ff33.net/drop/DSCN6430.JPG
http://c0ff33.net/drop/DSCN6431.JPG

Locutus · 31 December 2015, 22:16

Thats damn cool :-)

If you do a run of PCB's i wouldnt mind a couple.

strim · 01 January 2016, 13:49

There will be production run at some point. This is not assembled yet, some changes to the PCB might still be necessary.

I think that buying a complete device might be more economical (once they are available).

Locutus · 01 January 2016, 14:35

Seeing its a I2C controller, just sell a kit.

strim · 01 January 2016, 17:44

Assembled prototype:
http://c0ff33.net/drop/akuhei-proto-01.jpg

Locutus · 01 January 2016, 19:02

fucking cute :-)

Daedalus · 02 January 2016, 19:33

Nice!! Always thought of developing a GeekPort compatible interface for the clockport but never got too far. This would be awesome for hardware tinkerers like myself!

johnim · 02 January 2016, 22:06

nice work

strim · 09 January 2016, 00:32

Commencing prototype testing

cpiac64 · 09 January 2016, 01:10

very very nice

strim · 11 February 2016, 21:22

http://c0ff33.net/drop/P1070615.jpg

Locutus · 12 February 2016, 07:55

By the way, are you providing any software support?

Aeons ago in the dark ages i built the ICY (Z2 I2C from M. Boehmer) and used it for some projects in Uni. It came with a i2c.library with source.

My recollection is a bit vague about that but it might be interesting to take a look if its usable to adapt to this card.

Then again, I2C controller. DIY :-)

strim · 12 February 2016, 08:48

Quote:

Originally Posted by Locutus

It came with a i2c.library with source.

Coincidentally... https://github.com/Sakura-IT/i2clib

I got permission from the author to slap a BSD license on it and further develop it. I will add support for the new controller.

Also here's an example test program that bangs the hardware directly:
https://github.com/Sakura-IT/akuhei-.../src/akutest.c

Daedalus · 12 February 2016, 10:03

Excellent, I was going to ask whether it would be compatible with already existing APIs, however rare their usage might be.

andrewshahoff · 27 September 2017, 01:33

Any joy with I2C ? Did the prototype working and is it any point to purchase PCB and chip ?

I am thinking of start "Home Automation" project on I2C sensors and Amiga and when everything working port this system to Arduino.

strim · 03 October 2017, 10:24

Quote:

Originally Posted by andrewshahoff

Any joy with I2C ? Did the prototype working and is it any point to purchase PCB and chip ?

I am thinking of start "Home Automation" project on I2C sensors and Amiga and when everything working port this system to Arduino.

I have around 50 of these boards built. Just never got the time to write appropriate software (more useful than test program referenced above). Interested in writing something more useful?

idrougge · 03 October 2017, 19:19

Did you finish i2c.library support?

andrewshahoff · 23 October 2017, 19:43

Quote:

Originally Posted by strim

I have around 50 of these boards built. Just never got the time to write appropriate software (more useful than test program referenced above). Interested in writing something more useful?

For the beginning I got few PCBs and I2C chips. But in all this downloads , I cannot find the rest of parts

I mean paramethrs of capacitors + resistors , as well as voltage stabilizer ( 3 pin ?)

strim · 24 October 2017, 19:58

Quote:

Originally Posted by andrewshahoff

For the beginning I got few PCBs and I2C chips. But in all this downloads , I cannot find the rest of parts

I mean paramethrs of capacitors + resistors , as well as voltage stabilizer ( 3 pin ?)

I'm pretty sure you could extract this information from KiCad project files, that are available on GitHub. But to save you some time, here it is:

Code:

Clockport connector	J1	Molex 87758-2216	538-87758-2216	THT 2mm	Mouser	1
I2C Controller	U2	NXP PCA9564PW,112	771-PCA9564PW	TSSOP20	Mouser	1
Capacitor 1uF 0603	C1	Murata GRJ188R71E105KE11D	81-GRJ188R71E105KE1D	SMD 0603	Mouser	1
Capacitor 0.1uF 0603	C2-C3	Murata GRJ188R71H104KE11D	81-GRJ188R71H104KE1D	SMD 0603	Mouser	2
3.3V Regulator	U3	TI TLV70233DBVR	595-TLV70233DBVR	SOT-23-5	Mouser	1
Resistor 4.7k	R1-R2	Panasonic ERA-3AED472V	667-ERA-3AED472V	SMD 0603	Mouser	2
I2C Connector	J2	Molex 22-28-8051	538-22-28-8051	THT 2.54mm	Mouser	1

andrewshahoff · 25 October 2017, 01:01

Thank you!

31 December 2015, 21:34	#1
strim NetBSD developer Join Date: May 2012 Location: Warsaw, Poland Posts: 411	I2C adapter for clockport I'm working on a small I2C adapter for clockport. This will allow connection of all kind of sensors and cool gadgets to Amiga. Sensors (temperature, pressure, acceleration), LCD displays, keypads, whatever else can talk I2C bus protocol. It's open source just as any other Sakura project https://github.com/Sakura-IT/akuhei Prototype PCB pics: http://c0ff33.net/drop/DSCN6430.JPG http://c0ff33.net/drop/DSCN6431.JPG

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31 December 2015, 22:16	#2
Locutus Registered User Join Date: Jul 2014 Location: Finland Posts: 1,175	Thats damn cool :-) If you do a run of PCB's i wouldnt mind a couple.

01 January 2016, 13:49	#3
strim NetBSD developer Join Date: May 2012 Location: Warsaw, Poland Posts: 411	There will be production run at some point. This is not assembled yet, some changes to the PCB might still be necessary. I think that buying a complete device might be more economical (once they are available).

01 January 2016, 14:35	#4
Locutus Registered User Join Date: Jul 2014 Location: Finland Posts: 1,175	Seeing its a I2C controller, just sell a kit.

01 January 2016, 17:44	#5
strim NetBSD developer Join Date: May 2012 Location: Warsaw, Poland Posts: 411	Assembled prototype: http://c0ff33.net/drop/akuhei-proto-01.jpg

01 January 2016, 19:02	#6
Locutus Registered User Join Date: Jul 2014 Location: Finland Posts: 1,175	fucking cute :-)

02 January 2016, 19:33	#7
Daedalus Registered User Join Date: Jun 2009 Location: Dublin, then Glasgow Posts: 6,334	Nice!! Always thought of developing a GeekPort compatible interface for the clockport but never got too far. This would be awesome for hardware tinkerers like myself!

02 January 2016, 22:06	#8
johnim Amibay Mod/Staff Join Date: Jun 2010 Location: birmingham uk Age: 48 Posts: 1,019	nice work

09 January 2016, 00:32	#9
strim NetBSD developer Join Date: May 2012 Location: Warsaw, Poland Posts: 411	Commencing prototype testing

09 January 2016, 01:10	#10
cpiac64 Registered User Join Date: Apr 2010 Location: Italy Posts: 1,136	very very nice

11 February 2016, 21:22	#11
strim NetBSD developer Join Date: May 2012 Location: Warsaw, Poland Posts: 411	http://c0ff33.net/drop/P1070615.jpg

12 February 2016, 07:55	#12
Locutus Registered User Join Date: Jul 2014 Location: Finland Posts: 1,175	By the way, are you providing any software support? Aeons ago in the dark ages i built the ICY (Z2 I2C from M. Boehmer) and used it for some projects in Uni. It came with a i2c.library with source. My recollection is a bit vague about that but it might be interesting to take a look if its usable to adapt to this card. Then again, I2C controller. DIY :-)

12 February 2016, 10:03	#14
Daedalus Registered User Join Date: Jun 2009 Location: Dublin, then Glasgow Posts: 6,334	Excellent, I was going to ask whether it would be compatible with already existing APIs, however rare their usage might be.

27 September 2017, 01:33	#15
andrewshahoff Registered User Join Date: Sep 2017 Location: Dublin Posts: 12	Any joy with I2C ? Did the prototype working and is it any point to purchase PCB and chip ? I am thinking of start "Home Automation" project on I2C sensors and Amiga and when everything working port this system to Arduino.

03 October 2017, 19:19	#17
idrougge Registered User Join Date: Sep 2007 Location: Stockholm Posts: 4,332	Did you finish i2c.library support?

25 October 2017, 01:01	#20
andrewshahoff Registered User Join Date: Sep 2017 Location: Dublin Posts: 12	Thank you!

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