Hi Michael, According to your signature, I live fairlu locally in Horsham, West Sussex. Please let me know if there is anything I can help you with now or in the future and feel free to message me off list.
I'm an electronics engineer too. Thanks! Christopher Obbard On Sat, 20 Feb 2021, 15:00 Michael A Ray via sigrok-devel, < sigrok-devel@lists.sourceforge.net> wrote: > Hello Gerhard, > > I'm familiar with IDC and DuPont connectors etc, and the 0.1 inch pitch > of a lot of electronic gizmos and connectors. > > Thanks for taking the time to help. Kevin has also helped to confirm > that what I suspected is perfectly true. > > How different things are now for those of us who can't see with smart > phone apps capable of doing optical character recognition. > > Thanks again. > > Mike > > On 20/02/2021 14:28, Gerhard Sittig wrote: > > On Sat, 2021-02-20 at 12:59 +0000, Michael A Ray via sigrok-devel wrote: > >> > >> On the broad face of the box there are legends reading: > >> > >> CH0 CH1 CH2 CH3 CH4 CH5 CH6 CH7 GND PWM1 > >> CH8 CH9 CH10 CH11 CH12 CH13 CH14 CH15 GND PWM2 > >> > >> I have managed to read this using an app on my iPhone called SeeingAI > >> that can read short text of this kind. > >> > >> But I am not certain which line of ten connectors is the first 8 > >> channels, plus GND and PWM, and which is the second. > > > > This connector format is referred to as IDC, and comes as pin > > headers (male, what you see on the device) and female (should be > > the cable side). This connector's pitch appears to be 100mil > > (0.1 inch spacing) which translates to 2.54mm spacing. > > > > There is a convention how to number those IDC pins. When you look > > _into_ the set of pins (that is: from the outside into the 2x10 > > connector of this device), and have the keying gap of one of the > > long sides to the left, then pin 1 by convention is in the upper > > left hand side. Pin 2 is on the upper right hand side. Pin 19 > > would be on the lower left hand side, pin 20 on the lower right > > hand side. Female connectors of course are mirrored. And there > > are vendors who don't heed this numbering and make up their own. > > So it's always good to check before use. > > > > Cannot tell whether http://www.jtagtest.com/pinouts/arm20 is > > accessible to you. It lacks the keying notch, but illustrates the > > numbering. Could not find ASCII art images in a quick search, > > most are png and pdf. It's a bummer. > > > > According to the above convention, pins 1, 3, 5, etc up to 15 > > are ch0, ch1, ch2, up to ch7. Pins 2, 4, etc up to 16 are ch8, > > ch9, etc up to ch15. Both pins 17 and 18 are GND. Pin 19 is PWM1, > > pin 20 is PWM2. > > > > That is my interpretation of the mugshot > > https://sigrok.org/wiki/File:Kingst_la2016_mugshot.png > > on the device wiki page https://sigrok.org/wiki/Kingst_LA2016 > > which suggests that the notch is on the connector's "top" and > > pointing to the cover of the device. > > > > > > virtually yours > > Gerhard Sittig > > -- > > If you don't understand or are scared by any of the above > > ask your parents or an adult to help you. > > > > > > _______________________________________________ > > sigrok-devel mailing list > > sigrok-devel@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/sigrok-devel > > > > > -- > Michael A. Ray > Analyst/Programmer > Witley, Surrey, South-east UK > > "Perfection is achieved, not when there is nothing more to add, but when > there is nothing left to take away." -- A. de Saint-Exupery > > https://cromarty.github.io/ > http://eyesfreelinux.ninja/ > http://www.raspberryvi.org/ > > > > > _______________________________________________ > sigrok-devel mailing list > sigrok-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/sigrok-devel >
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