Go to advanced search

by MH6
Tue Apr 18, 2017 4:26 pm
Forum: Compute Module
Topic: 3G/4G/LTE modem for CM3 and I/O board
Replies: 4
Views: 22301

Re: 3G/4G/LTE modem for CM3 and I/O board

There are plenty of devices you can buy that provide a USB interface which you can utilize. For instance: http://nimbelink.com/skywire-cellular-modem/ http://www.multitech.com/brands/socketmodem-cell Please keep in mind that most 4G LTE modems like this are still fairly expensive. You can maybe find...
by MH6
Tue Apr 18, 2017 2:40 pm
Forum: Compute Module
Topic: CM3 vertical socket
Replies: 15
Views: 8625

Re: CM3 vertical socket

Just finished soldering mine and I'm happy to report it's working :mrgreen: https://pbs.twimg.com/media/C9cmry7XgAANQqB.jpg:large Which part did you end up going with? I long ago gave up trying to find a decent source for cheap, low quantity vertical SODIMM connectors outside of China. The horizont...
by MH6
Thu Dec 29, 2016 5:01 pm
Forum: Compute Module
Topic: Has the CM3 launched?
Replies: 11
Views: 2364

Re: Has the CM3 launched?

That will be very helpful. I kind of like the idea of the CM3 Lite having the option for adding your own eMMC. Say, what? I've never heard of a way to add your own eMMC to a CM3. There are two versions of the CM3. The CM3 and the CM3L (or CM3LT). The former has 4GB eMMC on it. The later has none an...
by MH6
Thu Dec 29, 2016 4:47 pm
Forum: Compute Module
Topic: Has the CM3 launched?
Replies: 11
Views: 2364

Re: Has the CM3 launched?

Well if nothing else at least we get to peruse the datasheet. Maybe someone already posted it, but its the first I'm seeing of it. Ahem - https://www.raspberrypi.org/documentation/hardware/computemodule/datasheet.md put up in October (https://www.raspberrypi.org/forums/viewtopic.php?f=98&t=162690) ...
by MH6
Thu Dec 29, 2016 3:53 pm
Forum: Compute Module
Topic: Has the CM3 launched?
Replies: 11
Views: 2364

Re: Has the CM3 launched?

Well if nothing else at least we get to peruse the datasheet. Maybe someone already posted it, but its the first I'm seeing of it.

http://www.farnell.com/datasheets/2175850.pdf

That will be very helpful. I kind of like the idea of the CM3 Lite having the option for adding your own eMMC.
by MH6
Mon Jul 18, 2016 6:19 pm
Forum: Off topic discussion
Topic: See who has finally decided to get a raspberry pi :D
Replies: 12
Views: 2688

Re: See who has finally decided to get a raspberry pi :D

I think Nintendo just saw one of the various Raspberry Pi powered 3D printed mini-Nintendos and thought "Wait a minute....we should make that!" :lol:
by MH6
Mon Jul 18, 2016 6:16 pm
Forum: Off topic discussion
Topic: ArduCAM with Broadcom BCM2835 SoC
Replies: 40
Views: 6494

Re: ArduCAM with Broadcom BCM2835 SoC

I'm hoping I can grab a dozen before anything happens. I would love something like this to stick on my own boards and not have to deal with the SODIMM connector and the Pi CM. Don't get me wrong, I love the Pi CM, and I'm really hoping the CM3 will actually come out soon, but this form factor is nic...
by MH6
Thu Apr 14, 2016 6:42 pm
Forum: Compute Module
Topic: Diagnosing problems with LAN9514 and Ethernet Jack
Replies: 8
Views: 4643

Re: Diagnosing problems with LAN9514 and Ethernet Jack

Hi, the XTAL I use is a ceramic SMD type: http://www.reichelt.de/Crystals-SMD-Ceramic-Case/25-000000-MJ/3/index.html?ACTION=3&GROUPID=4003&ARTICLE=85011&OFFSET=500&LANGUAGE=EN That one seems to be out of specs a little bit (only drives 100uW), but works fine on several boards. If you soldered the c...
by MH6
Tue Mar 29, 2016 5:54 pm
Forum: Compute Module
Topic: Diagnosing problems with LAN9514 and Ethernet Jack
Replies: 8
Views: 4643

Re: Diagnosing problems with LAN9514 and Ethernet Jack

Hi, I also did it with the reference schematic for the LAN9514 and it works without any problems. The difference I can see between your schematic and the reference is, that you did not connect the JTAG-Pins except TDO to VDD and on of the Test-Pins is not connected. Atached is my schematic I use. D...
by MH6
Tue Mar 29, 2016 5:03 pm
Forum: Compute Module
Topic: CM (Jessie Lite) Randomly Fails to Boot
Replies: 4
Views: 1159

Re: CM (Jessie Lite) Randomly Fails to Boot

There is a problem using the "sdhost" driver on the CM - I haven't got to the bottom of it yet, which is why current kernel configs now use the older "mmc" driver on CM. However, the most recent Raspbian releases were made the day before that commit, so the default is still currently "sdhost". I wo...
by MH6
Sun Mar 27, 2016 10:30 pm
Forum: Compute Module
Topic: Diagnosing problems with LAN9514 and Ethernet Jack
Replies: 8
Views: 4643

Re: Diagnosing problems with LAN9514 and Ethernet Jack

I recall back when Pis were new (so new they weren't really available) that a batch had to go back to the factory because the wrong kind of RJ-45 jack was installed. Something about built-in "magnetics". The J3011 ethernet jack I am using has built-in magnetics. Same as the one the LAN9514i referen...
by MH6
Sun Mar 27, 2016 2:02 am
Forum: Compute Module
Topic: Diagnosing problems with LAN9514 and Ethernet Jack
Replies: 8
Views: 4643

Diagnosing problems with LAN9514 and Ethernet Jack

I recently built a custom Pi CM board, and everything seems to be working OK except for the ethernet jack. I am utilizing a LAN9514 IC to split the CM's USB line into an ethernet port and 4 USB ports. I have an eth0 interface available, but the Ethernet port's LEDs do not light up when a cable is pl...
by MH6
Sat Mar 26, 2016 10:47 pm
Forum: Compute Module
Topic: CM (Jessie Lite) Randomly Fails to Boot
Replies: 4
Views: 1159

Re: CM (Jessie Lite) Randomly Fails to Boot

So I decided to use the latest nightly build of Raspbian Wheezy NoX. Works perfectly.

I'll give Jessie Lite another try in a few months.
by MH6
Sat Mar 26, 2016 9:45 am
Forum: Compute Module
Topic: CM (Jessie Lite) Randomly Fails to Boot
Replies: 4
Views: 1159

CM (Jessie Lite) Randomly Fails to Boot

So I recently installed the 2016-03-18 version of Jessie Lite on my CM, and have since been having trouble booting. It will sometimes work, and sometimes not work, and I'm not sure what the cause is. I've added "dtoverlay=mmc" to my cmdline.txt to see if that helped fix the problem, but it did not. ...
by MH6
Thu Dec 03, 2015 9:54 pm
Forum: General discussion
Topic: Pi 3D Viewer
Replies: 9
Views: 2411

Re: Pi 3D Viewer

Have any screenshots of it?
by MH6
Wed Aug 26, 2015 6:12 pm
Forum: Troubleshooting
Topic: USB Device Speed (USB2.0/USB1.1) Issues for 4G Modem
Replies: 6
Views: 2907

Re: USB Device Speed (USB2.0/USB1.1) Issues for 4G Modem

Here is a picture of my current prototype. The modem works perfectly when the green USB cable is connected to a non-powered hub instead of directly to the Pi. If connected directly to the Pi, it only works if I force USB 1.1 mode.

Click here for full-size
Image
by MH6
Wed Aug 26, 2015 6:35 am
Forum: Troubleshooting
Topic: USB Device Speed (USB2.0/USB1.1) Issues for 4G Modem
Replies: 6
Views: 2907

Re: USB Device Speed (USB2.0/USB1.1) Issues for 4G Modem

If you have a RPi B+ or later, you could increase the USB BUS from 600ma to 1200ma if you have a decent 5V2A PSU https://projects.drogon.net/testing-setting-the-usb-current-limiter-on-the-raspberry-pi-b Sorry, forgot to mention I've already added max_usb_current=1 to my /boot/config.txt I was hopef...
by MH6
Wed Aug 26, 2015 2:59 am
Forum: Troubleshooting
Topic: USB Device Speed (USB2.0/USB1.1) Issues for 4G Modem
Replies: 6
Views: 2907

USB Device Speed (USB2.0/USB1.1) Issues for 4G Modem

I have a 4G LTE modem that connects to my Raspberry Pi 2 B+ via USB. When directly connected to the Pi, the device does not show up, and I get repeated messages like this in dmesg [ 42.045357] usb 1-1.4: new high-speed USB device number 17 using dwc_otg [ 42.305364] usb 1-1.4: new full-speed USB dev...

Go to advanced search