838-PEB PCB

The 838-PEB board allows a TI or Geneve user to choose their own PC ATX case and ATX power supply (24 pin) to be used based on the user's needs. In order to keep cost down and to allow the user to customize their unit the buyer must buy their own PC case and ATX power supply this unit does not come with unless added as option.

Note: If using with the TI-99/4A it is recommended to use the 838-IO Plus interface to replace the bulky TI-99/4A Flex Cable interface.  This can be purchased separate.  It is also recommended to use the 838-IO Plus ATX card and not the full-size card for a standard PEB.

The case offered will be a ATX Mid-Tower case (not included unless selected as option) with

• 2 x USB 2.0/USB3.0/Audio In/Out Front ports
• 1 x 3.5" external Drive Bays
• 3 x 5.25" external drive bays
• 5 x 3.5" internal Drive bays
• ATX Power supply mounts at top (not included)

If any of your PEB cards have had the voltage regulators removed and jumpered you will need to ensure you have added them back. I recommend 1.5 amp voltage regulators as 12v will be delivered to the 5v voltage regulators and be regulated by the voltage regulator down to 5.

The 838-PEB Board comes blank you may choose options for assembly.

This product has been designed around the 838-IO Plus card that replaces the Texas Instruments Flex Cable Interface. Depending on the case you choose, and purchase will depend on if you can use the existing 838-IO Plus PEB card (if you purchased it). If not, you will have to purchase the 838-IO Plus ATX version of the card, which is shorter to allow for the existing cables to be snaked through the standard PC IO slot and plug directly into the card.

The 838-PEB board has the below standard features:

• 8 x Expansion Slots
• USB Pass through Power
• USB Standby Power
• 4 x 12v Fan headers
• 1 x 12v tap
• 2 each of 3.3v and 5v power taps
• Front USB3 connector for power and data use
• Connects for Gotek1 and Gotek2 drives for external mods for use with Display and Rotary. USB Data Lines (D and D-) hooked to front USB ports for use with MicroGotek or other USB hardware
• RJ45 connected to Gotek1 and Gotek2 rotary and display headers for external hookups
• Power Switch and Power LED hookups
• connector for use with 838-Latching Relay Module

The 838-Latching Relay Module is required if a user will use the existing momentary power switch that all PC cases are equipped with. This module allows the momentary switch to act as a latching switch. Press to power on, press to power off. If the Latching relay module is not purchased, then the switch will have to be replaced with a latching switch to ensure the ATX power supply stays on.

I have designed a set of 3D printable PEB card rail guides, link to STL files below:

https://www.shift838.com/downloads/838-PEB-Rails.zip

STL Files for the 838-IO Plus case for the side-card that plugs into the 99/4A itself are linked below:

https://www.shift838.com/downloads/838IOPCASES.zip

838-PEB Manual:
http://www.shift838.com/downloads/838-PEB_manual.pdf

838-PEB Part 1: Introduction
https://youtu.be/Kap86ksHbUE

838-PEB Part 2: Demonstration
https://youtu.be/xh1Mq1HeC8M

• Availability: 1 In Stock
• Model: 838-PEBV1
• Brand: 838 Designs