Pages: [1]   Go Down
Author Topic: Why is Ethernet so expensive?  (Read 2485 times)
0 Members and 1 Guest are viewing this topic.
0
Offline Offline
Newbie
*
Karma: 0
Posts: 17
Arduino rocks
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

An Arduino Uno costs $30. An Uno with Ethernet costs $65. A Raspberry Pi with Ethernet, 512MB RAM, HDMi video and an SD card slot costs $40. An Adafruit Ethernet shield sells for $45, more than the complete Raspberry Pi.

Presumably the adding Ethernet to a Pi cost a few dollars. Why is Ethernet so expensive with Arduino?

Julian
Logged

SE USA
Offline Offline
Faraday Member
**
Karma: 41
Posts: 3783
@ssh0le
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

cause its custom external hardware no one uses to handle the bulk of the interface, the pi has it in the chip to start with
Logged


0
Offline Offline
Newbie
*
Karma: 0
Posts: 17
Arduino rocks
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Looking at the schematics, the Raspberry Pi seems to use a LAN9512 "Hi-Speed USB 2.0 hub and high-performance 10/100 Ethernet controller". On Digikey these are $3.80 for 100+.

The Wiznet ethernet chip used in the Uno Ethernet costs $4.76 for 100+ from Sparkfun.

These two solutions seem comparable to me. I still don't understand why adding Ethernet to an Arduino costs more than the Arduino on its own. I appreciate costs go down with volumes but an Ethernet shield is still at the top end of shield prices.
Logged

Global Moderator
Netherlands
Offline Offline
Shannon Member
*****
Karma: 220
Posts: 13846
In theory there is no difference between theory and practice, however in practice there are many...
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

In another thread someone proposed to use the Pi as the new ethernet "device" for Arduino.. Makes sort of sense ....
Logged

Rob Tillaart

Nederlandse sectie - http://arduino.cc/forum/index.php/board,77.0.html -
(Please do not PM for private consultancy)

Seattle, WA USA
Online Online
Brattain Member
*****
Karma: 631
Posts: 50133
Seattle, WA USA
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Quote
These two solutions seem comparable to me. I still don't understand why adding Ethernet to an Arduino costs more than the Arduino on its own. I appreciate costs go down with volumes but an Ethernet shield is still at the top end of shield prices.
The schematics and circuit board design are available, at no cost. The list of parts used is available, at no cost. If you think you can source all the parts, and assemble your own board cheaper, go right ahead.
Logged

Chile
Offline Offline
Edison Member
*
Karma: 35
Posts: 1251
Arduino rocks?
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

http://www.ebay.com/itm/MiNi-ENC28J60-Ethernet-LAN-Network-Module-For-Arduino-SPI-AVR-PIC-LPC-STM32-/170929813328?pt=LH_DefaultDomain_0&hash=item27cc35f750
Logged

My website: http://ried.cl

Tacoma, WA
Offline Offline
Full Member
***
Karma: 4
Posts: 192
Arduino rocks
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

eried: That is an ENC28j60 chipset, not a Wiznet. It will gobble up the ram on an Uno like nobodies business, and the standard ethernet library doesn't support it AT ALL.
BTW: If you think the ethernet is expensive, look at the WiFi.. EeeGads.. I suppose if you HAVE to prototype a WiFi setup... Remember the Arduino is just an educational/prototyping platform. Prototyping is generally always more expensive than mass production, even if this is prototyping on a mass scale.
Logged

Brian from Tacoma, WA
Arduino evangelist - since Dec, 2010.

Chile
Offline Offline
Edison Member
*
Karma: 35
Posts: 1251
Arduino rocks?
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

eried: That is an ENC28j60 chipset, not a Wiznet. It will gobble up the ram on an Uno like nobodies business, and the standard ethernet library doesn't support it AT ALL.
BTW: If you think the ethernet is expensive, look at the WiFi.. EeeGads.. I suppose if you HAVE to prototype a WiFi setup... Remember the Arduino is just an educational/prototyping platform. Prototyping is generally always more expensive than mass production, even if this is prototyping on a mass scale.

http://www.ebay.com/itm/Ethernet-Shield-W5100-For-Arduino-2009-UNO-Mega-1280-2560-/270955738702?pt=LH_DefaultDomain_0&hash=item3f1638764e

Little extra <10 usd
Logged

My website: http://ried.cl

Offline Offline
Newbie
*
Karma: 0
Posts: 1
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

get the last comment ethernet shield + this mini 5V portable wifi router smiley-wink
http://www.ebay.com/itm/TP-LINK-Wireless-Portable150M-802-11n-Wi-Fi-Router-For-Apple-Samsung-TL-WR702N-/371063816003?pt=COMP_EN_Routers&hash=item5665207f43
Logged

Offline Offline
Full Member
***
Karma: 7
Posts: 139
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Find out what a 56kbaud ethernet modem cost in 1984, and weighed, and you'll be congratulating the engineers for cutting those by quite a few orders of magnitude.
Logged

Pages: [1]   Go Up
Jump to: