Electronics Module Boards Library eXPerience

Various modular-designed electronics boards created for home learning projects.

These MOdule Boards (MOBs) are useful for:

• doing experiences
• testing specific components functions
• prototyping complex projects by modular approach
• expanding and interfacing components functions
• having fun building simple circuits

Contents of the MOBs library

• ExpressPCB custom components library containing the ExpressPCB files of schematic and pcb components used for drawing the MOBs layout

MOBs operating at both 3V3 and 5V

• mob-psu-distribution : 8-lines power bus expansion module board
• mob-io-array-switch-and-led-4x : 4-switch input array and 4-led output array module board
• mob-io-array-led-8x : 8-led output array module board
• mob-io-array-switch-8x : 8-switch input array module board
• mob-io-matrix-switch-4x4 : 4x4 input switch matrix module board
• mob-io-matrix-led-4x4 : 4x4 led matrix module board
• mob-fn-cbank-26.4mF : 26400uF Capacitor bank
• mob-if-midi : midi in/out/thru module board
• mob-voltage-divider-pot-2x : voltage-divider potentiometers module board

MOBs operating only at 5V

• mob-psu-5v : psu 5V module board
• mob-if-rs232 : rs232 interface board
• mob-mcu-pic16f6x8 : Microchip PIC 16F6x8 microcontroller module board

MOBs for audio experiences

• mob-audio-psu-9v-5v : psu 9V (VCC) and 5V (VR) module board
• mob-audio-jack : audio TRS jack 1/4" adapter module board
• mob-audio-io-stage : audio input and output stages module board

Specifications

Schematics and PCB layouts are designed with ExpressPCB free CAD software.

MOBs naming convention

• mob (module board)
• mob-psu (power supply unit)
• mob-io (input/output unit)
• mob-if (interface unit)
• mob-fn (function controller unit)
• mob-mcu (micro controller unit)

PCB Specifications

• PCB layout are designed on paperboard sizes: 2x8cm, 5x7cm, 7x10cm
• Each MOB is designed with the power connector (PWR) with the positive pin on left, a bulk capacitor (C) and a power-on led indicator (DL) (yes, I have surplus of components!)
• Activity leds are:
  • 3mm green led for power status indicator
  • 3/5mm green led for normal activity indicator
  • 3/5mm yellow led for warning status indicator
  • 3/5mm red led for error, fault or wrong status indicator
  • 3/5mm blue led for request of manual intervent
• Led current limiter resistors: R=1Kohm
• Digital line pull-up resistors: R=10Kohm
• IC decoupling capacitors: C=100nF
• Board bulk capacitors: C=10uF

ExpressPCB Custom Components Library

• ExpressPCB components used for MOBs are customized and named as "MOB_name_size"
• Paperboard layout templates are also saved as ExpressPCB custom components and named as "MOB__Paperboardsize"
• ExpressPCB custom components size units, unless otherwise specified, are 1/10 of inches
• PCB layout traces are 0.05", pads are 0,065"

Changes

See file CHANGES for the project resources change log

Future Plans for the MOBs Library

• Add more MOBs!

About

Author : Alessandro Fraschetti (mail: gos95@gommagomma.net)

License

This eXPerience is licensed under the MIT license