V5 ESD Protection Board

An ESD Protection board for the V5

Note to anybody potentially buying this board: We've noticed that there is an issue with the board where the holes aren't the correct size for the RJ11 jack. The SIGBots electronics team is currently making a new PCB design for the board to fit the jack properly.

This is an ESD protection board for the V5 Brain to help prevent dead ports or dead motors. This solution is not competition legal but can be very easily removed before a competition. This board sits in-between a port on the brain and a motor. Technical information about RS-485 Bus Protection can be seen here:

The schematic of the board

Specs

Everything you need for a functioning board is listed here as well as OSH Park link to buy our custom board:

Vendor

Qty

MPN

Vendor Part #

Description

Unit Cost

Ext

Digi-Key

1

CDSOT23-SM712

CDSOT23-SM712CT-ND

TVS DIODE

$1.53

$1.53

Digi-Key

2

A-2004-3-4-LP-N-R

AE10381-ND

RJ9/11 Jack- 4P4C unshielded

$0.56

$1.12

OshPark

1

29IVKKai

PCB (Set of 3)

$1.27

$1.27

Total

$3.92

Installation

1. The first step should be to install the TVS Diode, which should be soldered onto the D1 pads.
2. The second and final step should be to drop in and solder jacks into the J1 and J2 Section of the board.

Files

Schematic File:

Board File:

Teams Contributed to this Article:

  • BLRS (Purdue SIGBots)