guides:virtual_modem:section_2
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guides:virtual_modem:section_2 [2018-09-17 18:32] admin created |
guides:virtual_modem:section_2 [2022-12-17 19:45] omolini [Section 2 - Shopping list] |
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| - | ====== Section 2: Shopping list ====== | + | ====== Section 2 - Shopping list ====== |
| - | | **Raspberry Pi 3 Model B/B+** {{ :tutorials:pics:raspberry_pi_3_model_b.png?nolink&200 |}} | $30 (either model B or B+ should work fine) | | + | | **[[https://ebay.us/NLr0zk|Raspberry Pi 3 Model B/B+]] \\ [[https://ebay.us/JPBC5D|Raspberry Pi Zero W or newer]]** \\ {{:tutorials:pics:raspberry_pi_3_model_b.png?nolink&225|}} {{:guides:pics:raspberry-pi-zero-w.jpg?nolink&150|}} | $15-30 \\ Virtual modem has been tested \\ with [[https://ebay.us/NLr0zk|Raspberry Pi 3 model B]] and [[https://ebay.us/JPBC5D|Raspberry Pi Zero W]]. \\ Other Raspberry Pi models should work as well. | |
| - | | **8GB or larger MicroSD memory card** {{ :tutorials:pics:microsd_32gb.png?nolink&150 |}} | $5 eBay | | + | | **[[https://ebay.us/W07zWR|8GB or larger MicroSD memory card]]** \\ {{:tutorials:pics:microsd_32gb.png?nolink&150|}} | $5 [[https://ebay.us/W07zWR|eBay]] | |
| - | | **USB Power Adapter** {{ :guides:pics:usb_power_adapter.png?nolink&150 |}} | $5 eBay | | + | | **[[https://ebay.us/aUN6Xq|USB Power Adapter]]** \\ {{:guides:pics:usb_power_adapter.png?nolink&150|}} | $5 [[https://ebay.us/aUN6Xq|eBay]] | |
| - | | **USB to serial RS-232 interface adapter** {{ :guides:pics:usb_to_rs232.png?nolink&200 |}} | $5 eBay | | + | | **[[https://ebay.us/QnFezr|Prolific USB-to-Serial adapter]]** \\ {{:guides:pics:usb_to_rs232.png?nolink&200|}} | $8 [[https://ebay.us/QnFezr|eBay]]. Get the one with the \\ **Prolific chipset** (explanation below). | |
| - | | **Serial RS-232 null modem cable FEMALE/FEMALE** {{ :guides:pics:null_modem_cable.png?nolink&200 |}} | $5 eBay | | + | | **[[https://ebay.us/aAxPub|Serial RS-232 Null Modem cable FEMALE/FEMALE]]** or a \\ **[[https://ebay.us/C7wul7|Null Modem F/F Adapter]]** \\ {{:guides:pics:null_modem_cable.png?nolink&200|}} {{:guides:pics:null_modem_adapter.png?nolink&200|}} | $5 [[https://ebay.us/b2WT5G|eBay]] | |
| - | ^ **Total project cost** ^ **$50** ^ | + | ^ **Total project cost** ^ **~ $38-$53** ^ |
| - | You can also choose to use a **Raspberry Pi Zero**, which will save you $10-$15 from the total price, but you'll have to include extra adapters, USB hubs, etc). For the sake of simplicity in this tutorial, we'll be going with the fully features **Raspberry Pi 3 Model B**. | + | You can also choose to use a **Raspberry Pi Zero** which will save you some $15 from the total price, but for the sake of simplicity, we'll be using the **Raspberry Pi 3 Model B** on this tutorial. I've only tested these two Raspberry Pi's, but I see no reason why Virtual Modem wouldn't work with other Raspberry Pi models. |
| - | If you already have a running copy of Raspbian on your Raspberry Pi and just want to set up the serial interface and PPP, you can skip ahead to the [[#Physical connections|relevant part]]. | + | ===== Important note about USB-to-Serial adapters and pre-Pentium era computers ====== |
| + | I have found in my testing, that the cheapest USB-to-serial adapters do not fare well with some older, pre-Pentium era computers with certain UART chips. The cheaper "molded blue plastic" USB-to-serial adapters would not work at all with a 386-class system with an **8250** UART, even at 9600 baud. However, it would work fine with my 486 system which had a **16550AF** UART running at 56 kbit/s. If you're unsure which UART chip you have, you can check it easily in DOS 6 by running the MSD tool. In the DOS prompt, type MSD to run the program, go to Com Ports (Press key C) and it will show the UARTs available. Commond UARTs are **8250, 16450 and 16550**. | ||
| - | On to the next part! | + | If you are planning on using a 486 or older computer with either a **8250** or a **16450** UART, you can work around this limitation by using a genuine [[https://ebay.us/QnFezr|Prolific USB-to-Serial adapter]], or upgrade the computer by adding a serial I/O card with a **16550AF** UART chip. Please note that **8250** and **16450** UARTs will still be limited, and cannot handle much faster transfer speeds than about 9600 bit/s. To verify the chipset under Windows 10, plug in the adapter, open up Device Manager. Under "Ports" you will see the Prolific adapter identify as "Prolific USB-to-Serial Comm Port". |
| + | \\ | ||
| + | \\ | ||
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| + | {{:guides:pics:usb-prolific.png?300|}} {{:guides:pics:uart16550.jpg?450|}} | ||
| - | | << 1 - Introduction | This Page | 3 - Setting up Raspbian >> | | + | Optimal configuration for use with the Virtual Modem. A Prolific adapter and computer that has a 16550 UART. |
| + | \\ | ||
| + | \\ | ||
| + | \\ | ||
| - | ==== Skip to other sections ==== | + | {{:guides:pics:usb-serial-adapters.jpg?400|}} |
| + | |||
| + | Two types adapters compared. Top one is a Prolific adapter, with a Null-Modem adapter attached, and the bottom one is a generic "CH 340" USB-to-Serial adapter. This is only indicative. USB-to-Serial adapters come in all shapes and sizes. If you buy a Prolific adapter from eBay, make sure the item description specifically states it's a Prolific adapter. That way you'll have buyer protection in case the adapter you receive turns out to be something else. | ||
| + | |||
| + | ---- | ||
| + | |||
| + | On to the next chapter! | ||
| + | |||
| + | | [[Guides:Virtual Modem|<< 1 - Introduction]] | [[Guides:Virtual Modem:Section 2|This Page]] | [[Guides:Virtual Modem:Section 3|3 - Setting up Raspbian >>]] | | ||
| + | |||
| + | ===== Skip to other sections ===== | ||
| * [[Guides:Virtual Modem|Section 1 - Introduction]] | * [[Guides:Virtual Modem|Section 1 - Introduction]] | ||
| - | * [[Guides:Virtual Modem:Part 1|Section 2 - Shopping list]] | + | * **[[Guides:Virtual Modem:Section 2|Section 2 - Shopping list]] << You are here** |
| - | * [[Guides:Virtual Modem:Part 2|Section 3 - Setting up Raspbian on Raspberry Pi]] | + | * [[Guides:Virtual Modem:Section 3|Section 3 - Setting up Raspbian]] |
| - | * [[Guides:Virtual Modem:Part 3|Section 4 - Installing Virtual Modem]] | + | * [[Guides:Virtual Modem:Section 4|Section 4 - Setting up Virtual Modem]] |
| + | * [[Guides:Virtual Modem:Section 5|Section 5 - Using Virtual Modem]] | ||
| + | * [[Guides:Connecting Windows 3.1 to the Internet]] | ||
| + | * [[Guides:Connecting Windows 9x to the Internet]] | ||
| + | * [[Guides:Connecting Windows 2000 to the Internet]] | ||
| + | |||
| + | //Note, this page uses affiliate links to EBay. Income used from affiliate links help us support this website and the Raspberry Pi Virtual Modem project.// | ||
| ---- | ---- | ||
| - | Questions? Comments? [[:Contact Information|Contact Me!]] | + | ==== Get In Touch With Us! ==== |
| + | Share your thoughts and report bugs on Discord. \\ | ||
| + | [[https://discord.gg/4w6CpZ8|{{:images:social-discord.png?nolink|}}]] | ||
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| + | |||
| + | {{tag>Guides Guides:Networking}} | ||
guides/virtual_modem/section_2.txt · Last modified: 2022-12-17 19:55 by omolini
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