Software Installation Questions

HalloweenBob

Looks like I found it in an article that lists archives of old Raspbian versions. I found it here if this would be helpful to others. Do I have the right thing?

HalloweenBob

Just to be clear, is the correct version stretch or stretch lite?

daylanKifky

Lite has everything you need and is lighter

HalloweenBob

Had trouble loading the 'lite' version of Stretch. It complained about a undervoltage error. This was the same setup that loaded buster just fine. The only difference was the img file on the SD card. I switched to the full version of Stretch and it loaded fine. Afetr that I ran the command to start Notochord. It started, but I got errors. Any idea what these errors mean and how I can fix them?

HalloweenBob

In order to solve this can't write to mux error, do I need to have K-Ceptor's connected to the hub? I have 1 connected. It is set for position zero. I assume it's reading the default Biped configuration since I haven't changed anything. Do I need all the K-Ceptors hooked up, or does that have nothing to do with this error. I can't seem to move forward with this. I can't seem to get past this error.

daylanKifky

This problem was discussed on this forum before. It is adviced to search for a topic before posting. Have you tried the test described here?

HalloweenBob

I saw that. Turned out to have been a bad connection wire. Not the case for me. I have everything wired according to the diagram referenced. I will get a digital Volt meter and test all the testpoints tonight, but I don't know what else to do. I'm also having a small glitch in that half the time I start it up the Raspberry Pi does not boot up. I give it one or two more tries and it usually does. It's all brand new and seemed to successfully take the Stretch img, so I don't know what's going on there, either.

daylanKifky

HalloweenBob

The glitchs on boot might be caused by an inadequate power supply or cable. See this.

If you need support on the i2c problems please use the other thread

HalloweenBob

My Power supply is fine. I have a fully charged Power Bank at 2.1A. I repeated the same experiment with a wall-wart supply with a 2A output. I measured between TP7 (GND) and Pin 1 of JP1 (With the jumper off). I got 3.32V. I measured between TP7 and TP8 and got varying voltage between 1.98V and 2.39V, continuously fluctuating. Same exact result between TP7 and TP9. That was with the wires that go to the RaPi disconnected. Power was connected directly to the hub and the RaPi was not being powered. When I had the wires connected from J9 to the RaPi I got 0V between TP7 and TP8, and between TP7 and TP9. I have attached pictures showing my connections between the RaPi and the Hub. The Black wire goes from what I believe to be Pin 2 on the Hub to Pin 6 on the RaPi. The Purple wire goes from Pin 3 on the Hub to Pin 17 on the RaPi. The Red wire goes from Pin 4 on the Hub to Pin 3 on the RaPi, and the Orange wire goes from pin 5 on the Hub to Pin 5 on the RaPi. I am assuming that pin 1 of J9 on the hub is the pin closest to the USB A jack. That seems to be how it's laid out on the wiki page that you reference showing the diagram for the preferred configuration. I can also confirm that pin 24 of U1 is getting 3.32V assuming that I have it soldered in the right way around. (See attached pictures to confirm) I am hitting a big wall. Where do I go from here?

HalloweenBob

Can anyone confirm that I have all my chips mounted in the correct orientation?

admin

HalloweenBob

Keep in mind that this a public forum intended to share knowledge about chordata and help everyone making it work.

Whenever you use it, you should respect the Chordata community guidelines. Flooding around how desperate you are won't help solve your problems sooner, instead it difficults the job of our team on giving you support, and makes it harder for other people to find information.

As stated on the guidelines, if you need support it is your responsibility to post all the information needed to diagnose the issue on an organized manner.
(for example when you are listing a series of tests, using a bulleted list instead of a block of text would really help us understand what's going on).

Your latests posts are not related to any "Software installation problem", so they won't be taken into consideration here. Please ask for support on the Can't read mux with i2c thread, format your question correctly and include the results of the i2cdetect test.

HalloweenBob

I apologize if I didn't follow the guidelines. I don't want to duplicate things too much, but I will re-post these pictures and reformat my question in the other thread. I was answering the question about my power supplies and continued with other tests I was doing. Apologies again. You may delete my post here if it is a problem.

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