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Questions tagged [sbc]

SBC stands for single board computer. It is a complete computer on a single PCB, including processor/microcontroller, I/O and other features.

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22 views

SBC power on LED Indication

I am using SBC ABP 3000 in my application. The SBC will be placed inside a unit. I need to provide the SBC turn on and Off status to the external LED for indication. In the user manual, the J-status ...
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4answers
75 views

Understanding Raspberry Pi/SBC's at the same level as microcontrollers

I'm a fourth-year EE student and I have just recently started to dive a bit deeper into trying to understand how microcontrollers work at a low level when it comes to running code and performing its ...
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2answers
213 views

Why can't one use a Raspberry Pi (or any other computer) as a microcontroller?

Conceptually, I understand a microcontroller to be a very limited computer that can only run "one process". A microcontroller is what one would use when they want to interface with other ...
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35 views

Single board computers and screens power noise susceptibility

I have setups of some (five to ten) Raspberry Pi 2 or Raspberry Pi 3 single board computers running the same amount of screens. All computers and screens are connected to a single mains phase, ...
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0answers
29 views

M.2 to mini PCIE

I have an SBC with the following configuration on the M2 port If I require a mini PCIE device is it sufficient to make a breakout board and match pin to pin? We have a pcb engineer to handle the high ...
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1answer
59 views

Bridging Two UARTs on Same SBC

I recently started testing the UARTs on a RockpiE with the hardware v1.2 GPIO headers (https://wiki.radxa.com/RockpiE/hardware/gpio). In the 'boot/uEnv.txt' file, I disabled the console on uart2 by ...
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3answers
122 views

Reading a switch without a pull-up/pull-down resistor, for input into a script

The standard way to read a switch seems to be using a pull up/down resistor. I don't have one handy (I'm doing a one-off Raspberry Pi project while travelling and don't want to buy 100 resistors) - is ...
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42 views

Product Description for EMC test

I'm writing a document that should explain about a mini-PC in my company in order to give information for EMC test engineers who don't know the product. The mini-PC introduces high granularity modular ...
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342 views

How can I make a half-duplex UART to TTL converter for communicating to a servo with a HC04 and a HC126?

I have been trying to configure this circuit for some amount of time. I am using a HC04 chip and a HC126 chip. The HC04 is an inverter chip. The HC126 is a buffer gate. I found that for the servo ...
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0answers
49 views

name of standard USB tip

I wonder what is the name of USB ports like this. I'm searching for SBC with this kind of port but I can't find nowhere what's name of tips like that:
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0answers
56 views

Killed a component on Single Board Computer, SBC still functions

Primary question upfront: what is the general purpose of this IC, labeled "D820460". I found what appears to be the component HERE on digikey. Background: I have an SBC controlling tons of ...
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4answers
416 views

How to choose or design a suitable single board computer (SBC)? [closed]

Programmer here, making my first foray into anything hardware-specific. I need to deploy my software on dedicated hardware to around 1000 sites as part of a research project. The hardware is required ...
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2answers
93 views

How do I procure SoCs in small quantities? [closed]

I want to design an SBC but I am having difficulty with buying the SoC. I'm thinking of Snapdragon, Mediatek, Allwinner, Amlogic and Rockchip (These are the ones I know, if you know others I would ...
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2answers
145 views

What are some good replacement ICs for DIP UARTs? [closed]

Recently, I have been developing an SBC based on the Zilog Z80 microprocessor. Since my first design, a serial connection has been essential for the board to communicate with a PC or terminal. For ...
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0answers
137 views

UPS power supply for both router (12V, 2A) and up board squared (5V, 6A)

I was searching for an UPS (uninterruptible power supply) to power my Up Squared Board (5V, 6A) and my router (12V, 2A). So far I didn't find something suitable but here is my idea: Take a suitable ...
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1answer
55 views

Using narrower DDR RAM than controller

I have some ARM processor that have 72-bit width (8 for ECC) RAM controller. Can I buy eg. two 32bit chips and combine them? If yes then how? Can I buy just one 32bit and pull down rest of data pins ...
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1answer
189 views

Single Board Computer with no hardware memory for firmware [closed]

Im looking for a SBC that has Completely no hardware memory for the firmware (e.g BIOS, ,etc.), i think raspberry pi has that, except the bootloader which is ROM OR All firmware memory on the ...
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1answer
173 views

Which Board Should I Use For High Frequency GPS? [closed]

This is a very general question, hopefully with the amount of information I provide you will be able to steer me in the right direction. I am trying to build a very versatile GPS receiver, with ...
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1answer
243 views

Wire AC/DC Power-Supply to multiple devices

I plan to power 5 SBC boards through a single power-supply. Each board consumes 5V at 3A max. The power source is ordinary 230VAC (EU). I am uncertain how to connect everything in a sane way. Power-...
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3answers
2k views

Why is it important, in terms of ESD protection, to ground a PCB to its case (if not insulative)?

I have a 12V DC-powered SBC to mount inside a metal case. How important is it that I connect its ground(?) to the metal case on the interior? How is this going to protect against ESD events? From my ...
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2answers
655 views

How should I use a static-shielding bag prior to opening, and why?

After grounding the ESD mat and wearing the properly grounded anti-static wrist strap, what is the correct process to take the contents out of the static-shielding bag and take it onto the antistatic ...
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1answer
222 views

What is a safe way to carry around (wrt ESD safety) a single-board computer in an enclosure like this? [closed]

I have a single-board computer and an enclosure, which will hopefully look like this in the end: I have three small questions: If I only hold it from the edges while assembling the enclosure, do I ...
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1answer
770 views

Single board computer (SBC) with industrial grade [closed]

I was using single board computer (Raspberry Pi, Beaglebone) to develop prototypes. A new requirement is that the prototype should satisfy "industrial grade" with regarding to (for example): ...
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4answers
147 views

Linux on board without 3rd party modules. Where to start? [closed]

I would like to be able to design my own Linux board the way I design my own micro-controller boards. The complexity is obviously going to be higher from PCB design and assembly point of view, but I ...
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1answer
152 views

Why are some electronics seemingly unbreakable (phones) and others very fragile? [closed]

Specifically I am wondering about the mechanical strength of the surface mount connections in consumer electronics. Are some tougher than others? I've had a few experiences where an electronic ...
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1answer
58 views

single board computers sharing a microswitch

I have two independent single board computers (SBCs) connected to a common ground. I wish to have an input pin on each (both used concurrently) connected to a microswitch. When the microswitch closes ...
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2answers
782 views

100BASE-T two devices on a single ethernet port

I am trying to embed a SBC inside a device. Power, weight and space are very limited. The two devices need to communicate with each other via Ethernet using a crossover cable. I would like to solder ...
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2answers
834 views

Split External 5V PSU 4 ways

New here + reasonably new to electronics - can solder + hack, but anything finer I need help with! Building a games rig out of an old console case. I'm looking to have the PSU outside of the unit to ...
2
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1answer
177 views

EM compatibility of single board computers and laptops

Like a lot of people on this site, I own some single board computers (SBC) and microcontroller boards (UDOO, Raspberry Pi, Arduino, Atmel boards, etc.). I wonder about the electromagnetic emissions ...
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1answer
876 views

How do I get the physical dimensions of a DWG file? [closed]

How can I get the dimensions from this DWG file? I need the length and width as well the the precise locations of the mounting holes of this SBC (link to ZIP file below). http://dn.odroid.com/ODROID-...
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3answers
4k views

Designing a Single Board linux computer [closed]

I'd like to design a single board Linux computer, maybe something ARM-based but I really don't know that much about the hardware side of computers. Does anyone know where I could get some information ...
2
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1answer
186 views

Use of READY line on 8086 - is it mandatory?

Alright folks, I've recently begun working through the design of an 8086 single-board in my free time to play with (for lack of a better word, I need to experience the rush of being close to low-...
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1answer
48 views

The development board not detect SD card

I have problem on the SBC EM2440-III. when I insert sd card 4G or 8G into the board, it not detect sd card. I insert sd card 2G and work OK. please help me to solve the problem.
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1answer
581 views

SPI SBC communication

I am using MPC5748G controller, in that i want to communicate my SPI with the SBC chip on board i.e MC33905, By going through the data sheet I am sending the proper commands to SBC through SPI API's ...
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1answer
1k views

What is the difference between SBC & Development board?

I was searching for an dev board with RS 232 interface and with capability to implement ethernet interface as well(either on same board or using accessory board) then I came across Single Board ...
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2answers
443 views

What is this device?

I found this little device which got my attention. Maybe you can tell me what it is. Is it a I/O board with an OS running on it similar to Raspberry PI? ICs on the device: AMD: AM29F200BT-70EC "...
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3answers
662 views

Single Board Computer (SBC) suggestion for interfacing with DMA

I am taking over a project where a Spartan 6 FPGA provides the interface between an ADC and a DDR2 memory chip. The FPGA takes 16-bit data out of the ADC and stores it into the RAM at a rate of 28MHz. ...
2
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2answers
322 views

Software SPI implementation on SBC

I have a ts7800 SBC, and I need to communicate over an SPI bus. In their documentation they say that their is no hardware SPI, and they implement in their sample code "software SPI." For me, this ...
2
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1answer
592 views

PANDABOARD Booting

I have a PandaBoard and I do not, yet, have a SD/SDHC card reader to create an image for the board yet. Most of the information on the pandaboard.org web site walks through the creation of an SD ...
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2answers
3k views

Controller for greenhouse control system

I'm working in a project where we are developing a greenhouse control system, to take care of temperature, humidity... For the first step where we only log the parameters to an SD we have been using ...
3
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4answers
976 views

linux sbc recommendations [closed]

I realize this is nearly a dupe of SBC Recommendations , but I have slightly different specs in mind. Does anyone know of a single-quantity SBC with the following features? 32 bit CPU, something ...
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3answers
429 views

SBC Recommendations [closed]

I want to get started with embedded development and for my first project I thought of making a caller-ID type of appliance. Here's why I want a SBC for this: I want to be able to locally serve this ...
5
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2answers
535 views

COP8 MCU information needed

I have a problem with a sbc that I am repairing, the sbc is controlled by an 8-bit OTP microcontroller which I think is broken. I only get 200 ohms between pin Vcc and Vss, specifically the chip is ...