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  • Author Author: shabaz
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VIKI (Versatile Intelligent Controller for Industry) Schematic, Bill of Materials and Component Placement Diagrams

shabaz

Introduction

VIKI is intended to be a collaborative project to create an easy-to-assemble open-source device with uses in enterprise or industry as a controller with edge computing capability. It's intended to allow prototyping of solutions at low cost. There is an article discussing VIKI at high level here. It's intended to be super-easy to solder with just a regular soldering iron (a fine iron tip helps!) for non-electronics-engineers to assemble too, and then concentrate on creating interesting solutions. VIKI works standalone or with add-on devices (there is expansion capability).

 

This document contains clickable links to all the parts and component references for assembly, and component placement diagrams for the revision 1 board.

In initial tests the board appears to be functioning (not everything has been tested yet), but it is a new design so it is likely to change as bugs are found, and improvements are made.

Also, there is some flexibility, not all components need to be soldered if not all functionality is needed, and some component values can be changed to suit specific needs.

If you come up with improvements, or have ideas for use-cases, please do share them in a blog post or in the comments below, so that everyone can benefit as the design evolves.

The board files will be shared in the next few days too, and source code as it is developed.

 

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Component Placement Diagram - Top Side

 

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Component Placement Diagram - Underside

 

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Bill of Materials

Notes:

Bold parts are on board underside.

There are no resistors R1 and R2, they are left unpopulated on the board.

There are two options for LCD1 depending on desired backlight color.

The parts are listed in a suggested order for manual assembly.

The smaller parts are placed first, and the resistors provide some protection for the more static-sensitive parts placed later.

 

 

 

Product NameManufacturerQuantityBuy KitBuy Kit
(R7, R9, R12, R14) 2.7k 08054Buy NowBuy Now
(R3, R6, R11, R13, R21, R22, R23, R24, R27) 27k 08059Buy NowBuy Now
(R4, R5, R8, R10, R25, R26, R28, R29, R15, R16) 220R 08058Buy NowBuy Now
(R15, R16) 10k 08052Buy NowBuy Now
(R17, R18, R19, R20) 47R 08054Buy NowBuy Now
(FB1) Ferrite Bead 0805 HZ0805E601R-10HZ0805E601R-10Laird1Buy NowBuy Now
(U3) TPS79133 3.3V LDO SOT23-5TI1Buy NowBuy Now
(C1, C6, C8, C9) 100n 06034Buy NowBuy Now
(C7) 10n 06031Buy NowBuy Now
(c3, C4, C5) 2.2u TANTB3Buy NowBuy Now
(C2) 10u 25V1Buy NowBuy Now
(C10) 1u 08051Buy NowBuy Now
(D2) BAT54 (no suffix)1Buy NowBuy Now
(D8) BAT54C (C suffix)1Buy NowBuy Now
(U2) SI8641BB-B-IS1SI8641BB-B-IS1 Digital IsolatorSilicon Labs1Buy NowBuy Now
(J1, J2) FFC Top Contact 8-way 1mmWurth2Buy NowBuy Now
(OPTO1, OPTO2) HCPL-814-000EHCPL-814-000E2Buy NowBuy Now
(F1) 500mA PolySwitch1Buy NowBuy Now
(D5, D6) BAS16NXP2Buy NowBuy Now
(Q1, Q2) BC8472Buy NowBuy Now
(D3, D4) TVS 36V Bidir2Buy NowBuy Now
(D7) STPS3L40UFSTPS3L40UF 40V 3A Schottky1Buy NowBuy Now
(D9) TVS 6V Bidir SMAJ6.0CA1Buy NowBuy Now
(U1) REE-0505SREE-0505S 5V Isol. DC ConverterRecom1Buy NowBuy Now
(SW1, SW2) Push Switch D6 Series2Buy NowBuy Now
(LCD1 White) MCCOG21605B6W-FPTLWIMCCOG21605B6W-FPTLWIMidas1Buy NowBuy Now
(LCD1 Blue option) MCCOG21605B6W-BNMLWIMCCOG21605B6W-BNMLWIMidas1Buy NowBuy Now
(RL1, RL2) PCN-105D3MHZPCN-105D3MHZ2Buy NowBuy Now
(D1) RED 3mm LED (Short lead: Cathode)1Buy NowBuy Now
(SW4) SS12SDP2SS12SDP2 Slide Switch1Buy NowBuy Now
(PL1, PL2, PL3, PL4) PTSM 0,5/ 4-HH-2,5-THR 4-way TerminalPhoenix Contact4Buy NowBuy Now
(P1) PSTD 0,65X0,65/40-2,54 40-way DILPhoenix Contact1Buy NowBuy Now
(PLG1, PLG2, PLG3, PLG4) PTSM 0,5/ 4-P-2,5 4-way Plugs push-fitPhoenix Contact4Buy NowBuy Now
RPI-BC 107,6 DEV-KIT KMGY EnclosurePhoenix Contact1Buy NowBuy Now

 

Additional parts (not from Farnell/Newark):

Product NameManufacturerQuantity
(MIC1) SPH0645LM4H AdafruitAdafruit1

 

Schematic

 

image

  • It's alive : )

    Here's a five-second video of it, directly controlling a Cree mains LED lamp:

     

    It's not really intended for directly controlling mains like this, but it will work. The issue is that the connectors are for an enclosed control panel or cabinet - they are push-fit, and have no strain relief for external mains wiring. So today it should be used for low voltage. In a revision 2 I'm going to look for different connectors.

    As far as functionality is concerned, I'm happy that the following things work and are supported with code that can run from Linux shell, or bash scripts, (or any other script) and Python and so on:

    lcd_print

    relay_out

    opto_in

     

    These all use normal stdin/stdout, and command line parameters.

    So, to control the lamp, I just typed this in the command line:

    ./relay_out --allon
./relay_out --alloff

     

    As an example, these could be run from a Python program to (say) repeatedly flash the lights as a warning every second.

     

    The LCD screen is displaying the IP address, that is done with a systemd service, which calls the lcd_print program with the acquired IP address on startup.

  • Hi Shabaz,

     

    This is a nice idea!. When do you think it will be available for a Road Test? image

     

    Luis

  • in reply to fmilburn

    Hi Frank,

     

    That's awesome! It will be helpful to see how the assembly goes, and your feedback. Also maybe one day the thermocouple functionality could be useful for your reflow oven project. I'll keep updating here as the testing progresses.

    Currently basic input/output has been tested partially, and the buttons and display, and code written for it (they compile into executables in /usr/local/bin) that can be run from Python, shell scripts etc. I wrote some Linux man pages for some of them:

    image

     

    I hope to test the microphone capability next.

  • Hi Shabaz,

     

    I would like to build one and follow along but will wait until you have the first one functioning and then order parts.

     

    Frank