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A clean and professional design with this small but versatile PCB based on Atmega328P Arduino Pro Mini board.
A clean and professional design with this small but versatile PCB based on Atmega328P Arduino Pro Mini board.
88 backers pledged CA$ 3,035 to help bring this project to life.

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Turn your messy Arduino projects into a clean design for 2$ project video thumbnail
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Turn your messy Arduino projects into a clean design for 2$

CA$ 3,035

88

Here's how to turn your messy Arduino projects for only $2.

With this card, you can make your Arduino project that can include wireless card like the popular NRF24L01 or WIFI (ESP8266) or Bluetooth HC06. In addition, your project can have a 2x16 LCD, a 4x4 keypad, two servos, a temperature sensor (1-wire) and an internal 3.7v li-po battery. All in one with this customizable PCB. If you consider the time you save for assembling without even thinking to save time of debugging. All that for less than $2 USD!

Why using Pro Mini board? Simply because it is the cheapest (about 2$) and the smallest design with Atmega328P. No need USB interface, just use one FTDI to upload your sketch for all of your projects. 

Top side of the Pro Mini Breakout
Top side of the Pro Mini Breakout
Bottom side of the Pro Mini Breakout
Bottom side of the Pro Mini Breakout

This PCB is designed for this version of Pro Mini board (3.3v or 5v)

Use this version of Pro Mini board (3.3v or 5v). Note the A6-A7 pins
Use this version of Pro Mini board (3.3v or 5v). Note the A6-A7 pins
Pro Mini Breakout assembled
Pro Mini Breakout assembled
Bottom view with internal battery
Bottom view with internal battery

Specifications

With this PCB you can use:

  • Wireless cards NRF24L01 or WiFi ESP8266 or Bluetooth HC06 (one at a time)
  • Supply voltage from 3.3 volts to 12 volts via 1.35mm power jack.
  • Power source: Internal or external LiPo battery or power supply.
  • Popular 2x16 LCD display (HD44780) with backlight and brightness trim .
  • 1x4 or 4x4 keypad matrix.
  • 2 servos direct pinout connectors.
  • Temperature sensor (DS18S20) or other 1-wire device.

Plus:

  • Pull-up resistors for A6 and A7 (if 4x4 keypad used).
  • Configurable voltage jumper (RAW or direct power).
  • 1.35mm power jack for supply or charging internal battery.
  • 4 analog pins if 1x4 keypad used.
  • 8 analog pins if no keypad used.
  • 3 digital pins if servos and 1-wire device is not used.
  • Additional digital pin if NRF24L01 is not used.
  • 6 digital pins if no LCD is used.

Download schematic here

Download complete datasheet here

Sketches examples for using device on the board:

I offer rewards with passive components to avoid you having to find the right parts that fit perfectly on PCB.

With each order, I include the two surface mount resistances  (R1 and R2) because not all electronics enthusiast that have it stock.

About Rewards:

I offer 3 types of rewards:

  • A - PCB only (available in quantity of 1/4/8/16 pcs)
  • B - PCB with passive components (available in 1/4/8/16 pcs)
  • C - PCB with passive components including LiPo battery (available in 1/4/8/16 pcs)

* Based on exchange rate of 1,335% from xe.com on novembre 21th 2015.

***Lipo battery charge warning***  

As you may have seen in the schematic, there is no electronic management of the battery charge (current, voltage or time limitation). Therefore the user must be very careful when charging the battery. Always charge the battery from a standard USB port and for a maximum of 45 minutes. Charging LiPo batteries can be dangerous if not done carefully. You should always have an eye on the battery when charging. You should know what you do, so be careful.

Risks and challenges

The biggest challenge for this project was to put most of popular components in a small package to meet the maximum needs of Arduino enthusiasts.

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Questions about this project? Check out the FAQ

Support

  1. Select this reward

    Pledge CA$ 2 or more About $1.49

    ($1,50 USD) It's a good way to tell me "Nice job or good project idea" and to follow me in my next projects. Thank you! :)

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  2. Select this reward

    Pledge CA$ 7 or more About $5

    Reward 1A - Not sure it is for you? Try with one PCB. Not a big risk! (Includes two surface mount resistors, unassembled). It amounts to $5.25 USD.

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  3. Select this reward

    Pledge CA$ 12 or more About $9

    Reward 1B - One try out kit. Including one PCB with passive components (connectors, resistors, diode, potentiometer and power jack). Unassembled. It amounts to $9.00 USD each.

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    10 backers
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  4. Select this reward

    Pledge CA$ 17 or more About $13

    Reward 1C - One try out kit. Including one PCB with passive components (like reward 1B) plus 150mah 3.7 volts LiPo battery. Unassembled. It amounts to $12.75 USD each.

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    19 backers
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  5. Select this reward

    Pledge CA$ 22 or more About $16

    Reward 4A - Receive 4 PCBs and discover how it is simple to make clean projects. (Includes surface mount resistors, unassembled). It amounts to $4.13 USD each.

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    5 backers
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  6. Select this reward

    Pledge CA$ 34 or more About $25

    Reward 8A - Receive 8 PCBs and start new projects off right. (Includes surface mount resistors, unassembled).It amounts to $3.19 USD each.

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    3 backers
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  7. Select this reward

    Pledge CA$ 38 or more About $28

    Reward 4B - Receive PCB and passive components you need (connectors, resistors, diode, potentiometer and power jack) for 4 projects. With this kit, no need to rack their brains to find the good parts. It amounts to $7.13 USD each.

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    9 backers
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  8. Select this reward

    Pledge CA$ 53 or more About $40

    Reward 16A - Receive 16 PCBs for small production or if you have lots of projects in mind. (includes surface mount resistors, unassembled). It amounts to $2.48 USD each.

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    0 backers
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  9. Select this reward

    Pledge CA$ 53 or more About $40

    ***EARLY BIRD SPECIAL***
    Reward 20A - You're serious one! Receive 20 PCBs instead of 16 for small production or if you have lots of projects in mind. (Includes surface mount resistors, unassembled). 4 PCB for free that it amounts to 2$ USD each. In addition, this reward will shipped in priority.

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    Limited 12 backers
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  10. Select this reward

    Pledge CA$ 55 or more About $41

    Reward 4C - Receive PCB and passive components (like reward 4B) plus 150mah 3.7 volts LiPo battery for 4 projects. Unassembled. It amounts to $10.31 USD each.

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    13 backers
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  11. Select this reward

    Pledge CA$ 62 or more About $46

    Reward 8B - Receive PCB and passive components you need (connectors, resistors, diode, potentiometer and power jack) for 8 projects. With this kit, no need to rack their brains to find the good parts. Unassembled. It amounts to $5.81 USD each.

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    3 backers
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  12. Select this reward

    Pledge CA$ 94 or more About $70

    Reward 8C - Receive PCB and passive components you need (like reward 8B) plus 150mah 3.7 volts LiPo battery for 8 projects. Unassembled. It amounts to $8.81 USD each.

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    3 backers
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  13. Select this reward

    Pledge CA$ 99 or more About $74

    Reward 16B - Receive PCB and passive components you need (connectors, resistors, diode, potentiometer and power jack) for 16 projects. Unassembled. It amounts to $4.64 USD each.

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    0 backers
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  14. Select this reward

    Pledge CA$ 159 or more About $119

    Reward 16C - Receive PCB and passive components (like reward 16B) plus 150mah 3.7 volts LiPo batteries for 16 projects. Unassembled. It amounts to $7.45 USD each.

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Funding period

- (60 days)