i'm looking for "single board computer with embedded arm Linux" manufacture - Page 1
Forum section: electronics / general

author: iven
author_rank: Newbie
timestamp: February 03, 2018, 05:53:14 am
content: Hello, I'm looking for "single board computer with embedded arm Linux" manufacture to design and build simple single board computer with dual wifi without GPIO and HDMI and the sound card also I don't need to add ethernet.updating the detailslike a clone raspberry pi 3:- Quad-Core (1.2GHz or higher) 64bit CPU.- 1GB or 2GB RAM.- Two wireless LAN 2.4 GHz (like two chips) if you can add third one with 5GHz.- EMMC or I don't know what you call it with 16GB.- Embedded ARM Linux (I'm working on this customization with my own copy with specific configuration).- built-in (power bank board) to connect it with Li-ion batterythe things not wanted:- pin extended GPIO- USB ports- Pole stereo output and composite video port- HDMI- CSI camera port for connecting- DSI display port for connecting- Micro SD portif able to do this please contact me on ivenprvb@gmail.com

author: amspire
author_rank: Super Contributor
timestamp: February 03, 2018, 06:20:42 am
content: Quote from: iven on February 03, 2018, 05:53:14 amBy dual WiFi, do you mean 2.4 + 5GHz dual-band WiFi, or do you actually want two completely separate Wifi channels?Also what are the other requirements: RAM, ROM, speed, etc? Is this for embedded use?

author: Kean
author_rank: Unknown
timestamp: February 03, 2018, 10:44:59 am
content: Yeah, you need to provide quite a bit more info on requirements - e.g. embedded ARM Linux boards can range from 16MB to 4Gb RAM.And what exactly are you looking for - a designer, a manufacturer, an off the shelf board? What quantity? Open source design or proprietary?

author: iven
author_rank: Newbie
timestamp: February 04, 2018, 07:03:08 am
content: Quote from: amspire on February 03, 2018, 06:20:42 amHellolike a clone raspberry pi 3:- Quad-Core (1.2GHz or higher) 64bit CPU.- 1GB or 2GB RAM.- Two wireless LAN 2.4 GHz (like two chips) if you can add third one with 5GHz.- EMMC or I don't know what you call it with 16GB.- Embedded ARM Linux (I'm working on this customization with my own copy with specific configuration).- built-in (power bank board) to connect it with Li-ion batterythe things not wanted:- pin extended GPIO- USB ports- Pole stereo output and composite video port- HDMI- CSI camera port for connecting- DSI display port for connecting- Micro SD portif able to do this please contact me on ivenprvb@gmail.com

author: iven
author_rank: Newbie
timestamp: February 04, 2018, 07:04:56 am
content: Quote from: Kean on February 03, 2018, 10:44:59 amlike a clone raspberry pi 3:- Quad-Core (1.2GHz or higher) 64bit CPU.- 1GB or 2GB RAM.- Two wireless LAN 2.4 GHz (like two chips) if you can add third one with 5GHz.- EMMC or I don't know what you call it with 16GB.- Embedded ARM Linux (I'm working on this customization with my own copy with specific configuration).- built-in (power bank board) to connect it with Li-ion batterythe things not wanted:- pin extended GPIO- USB ports- Pole stereo output and composite video port- HDMI- CSI camera port for connecting- DSI display port for connecting- Micro SD portif able to do this please contact me on ivenprvb@gmail.com

author: IconicPCB
author_rank: Super Contributor
timestamp: February 04, 2018, 11:49:08 am
content: check out Olimex offering.

author: iven
author_rank: Newbie
timestamp: February 04, 2018, 03:30:09 pm
content: Quote from: IconicPCB on February 04, 2018, 11:49:08 amI didn't receive any offer please send me to this email: ivenprvb@gmail.com

author: DC1MC
author_rank: Super Contributor
timestamp: February 04, 2018, 03:52:30 pm
content: Dear Iven there are VERY few boards with dual Wi-Fi interface, usually people are using an extra USB WiFi adapter if they want to make routers or repeaters.The only board I've found for you is this one:https://mqmaker.com/product/witi-board/

author: iven
author_rank: Newbie
timestamp: February 04, 2018, 03:58:27 pm
content: Quote from: DC1MC on February 04, 2018, 03:52:30 pmDear I need to build own customized board and after that, i need to build special device for the first sample we need big quantity

author: CharlieEcho
author_rank: Regular Contributor
timestamp: February 04, 2018, 04:10:07 pm
content: What's the purpose of the dual wifi in the same band?This might be of interest:http://imti.co/post/145442415333/raspberry-pi-3-wifi-station-ap

author: IconicPCB
author_rank: Super Contributor
timestamp: February 04, 2018, 09:48:12 pm
content: Offering as in repertoire not commercial proposal.Visit Olimex website to see what they can offer.

author: Kean
author_rank: Unknown
timestamp: February 04, 2018, 10:18:37 pm
content: Having two WiFi chips on the same board & antennas close together is asking for interference & throughput problems.Many WiFi implementations can run multiple isolated SSIDs, so I'd suggest you look at that before custom hardware.

author: amspire
author_rank: Super Contributor
timestamp: February 04, 2018, 11:01:46 pm
content: If you really do need two WiFi systems, the cheapest solution may be two boards connected by gigabit ethernet. There are flat ethernet cables available that could make this reasonably neat.If this is for appliance use, it is also worth thinking about using Openwrt Linux instead of say a Debian based Linux.Openwrt has much ram/rom/cpu lower requirements then normal Linux and yet is is genuinely running Linux. Fairly complex services can often run in 64M ram, 16M rom and a processor running at 400MHz. A company specializing in Openwrt is Gl.inet (www.gl-inet.com). Their boards run of 5V and so all that is needed for battery use is the same hardware that you find in USB battery packs.Openwrt has a full developer environment to allow you to generate a rom image of a Linux that exactly meets you needs if you find the default builds unsuitable. It can me mostly configured by just ticking the boxes of the component you need and it then generates the O/S image file for the ROM. You get a comprehensive web interface with means of providing firmware upgrades. A typical O/S binary file for a system with a number of complex networking tasks built in and a fairly sophisticated web interface, SSH, SSL, VPN could be 8M Bytes. If you want to throw in Python for scripting, it gets bigger depending on how many libraries you need.And as Kean mentioned, are you sure you really need two complete WiFi systems rather then multiple SSIDs running on one WiFI?

author: Kean
author_rank: Unknown
timestamp: February 04, 2018, 11:10:17 pm
content: Another one worth looking at ishttps://www.8devices.com/Either use their module(s) on your own main board, or ask them to do a custom design.