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€2,502
pledged of €15,000pledged of €15,000 goal
58
backers
Funding Unsuccessful
The project's funding goal was not reached on Mon, June 10 2019 9:54 AM UTC +00:00
Last updated June 10, 2019

DIY portable soldering iron KIT

You receive the PCB that I've designed and all the parts so you could assemble your own portable iron with digital temperature control

DIY portable soldering iron KIT

You receive the PCB that I've designed and all the parts so you could assemble your own portable iron with digital temperature control

€2,502
pledged of €15,000pledged of €15,000 goal
58
backers
Funding Unsuccessful
The project's funding goal was not reached on Mon, June 10 2019 9:54 AM UTC +00:00
Last updated June 10, 2019

About

Thank you! First of all, I need the goal of 15000 because otherwise this is not profitable. The parts for each kit cost around 17 euros. Shipping is very expensive going from 13 to 22 euros for some countries. So, for a kit of 45 euros the earnings are low. 

I've been working on this board for more than a year and made a few versions and tests till the PCB worked without problems. The idea of this project is to have the board and the components and following my videos and guides, mount your own soldering iron. By that you will learn all the processes from schematic to layout to PCB manufacture, then soldering SMD and through hole components, bootloader burn, Arduino coding, PID, temperature control and much more.  The main goal of this project is to give the oportunity to other DIYers to practice at the same time they watch my YouTube tutorials with this board. The collected founds will help me get mold-injected cases instead of 3D printed and improve the board, tests and specs so it could be a commercial product. 


 What's on the PCB? 

the PCB
the PCB

 On the PCB we have the next components:

  • One ATMEGA328p-AU microcontroller chip
  • Vibration sensor
  • Buck converter circuit
  • 2 side push buttons
  • Thermocouple amplification OPAMP
  • Notification LEDs
  • Power MOSFET
  • OLED display 128 x 32 pixels
  • Metal clips for soldering iton tip
  • Notification buzzer
  • UART and SPI pads for bootlaoder burn and programming
  • DC plug input

Demonstration video 

We can set the temperature from 250ºC up to 480ºC. We can set the sleep time from OFF up to 10 minutes, the pre-set temperature which is the temperature that we will have when we first power on the iron. The iron automatically enters sleep mode and it will automatically exit sleep mode when the iron is moved due to the vibration sensor. 


1. Basic KIT

This is what you get if you order the basic kit. You won't receive the FTDI programmer or the power cable. 

2. Full KIT

With this kit you receive all you need to mount this unit and also to program the chip and power it from a LiPo battery.

3. Premium KIT

Premium kit is the same as FULL kit but you get 2 ATmega328 chip and 2 boards in case you mess up one while soldering SMD.



Temperature read 

Temperature read components
Temperature read components

To read the temperature we use an amplifier. The thermocouple is in series with the heater so we have to connect the negative and positive pins to an OPAMP, amplifiy the voltage drop over the thermocouple and then graph the output and obtain the temperature. 

Power control

Power MOSFET control
Power MOSFET control

The temperature is controlled by a PID system. This will create a PWM signal. This signal will be applied to a BJY that is used as a driver for the p-MOSFET. The mosfet will control the power applied to the iron tip and by that the temperature. Each loop there is a small power-off so we could read the thermocouple voltage drop. 

3D printed case

3D printed case for the unit
3D printed case for the unit

This project has a 3D printed case that I've designed and that you could print with PLA of any colour or transparent. Don't worry, after hours of testing, the base part of the iron tip was not hot enough to melt the plastic. I could easily touch the base of the iron tip with my hand, only the tip is getting hot. 

Risks and challenges

One of my main concern is that soldering SMD components might be tricky for some people. That’s why I recommend you the premium kit with double ATmega chip and double PCB. Anyway, with this kit you have the opportunity to learn how to solder SMD components since I will provide a detailed video on how to do that with your components.

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Support

  1. Select this reward

    Pledge €2 or more About $3

    Thanks for your Support!

    With this, you support this project. I'm sharing all the learning videos and open source projects for free, but, you would get an extra special video about this project. Thank you very much.

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    4 backers

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  2. Select this reward

    Pledge €6 or more About $7

    Thanks for your triple Support!

    With this, you triple support this project. This is the same as the tier above but you will also get:
    A .ZIP file with the PCB GERBERS, full part list with buy links for each component, full guide and code for the soldering iron.

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    13 backers

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  3. Select this reward

    Pledge €45 or more About $51

    1 x DIY soldering iron BASIC-KIT

    * Shipping Included *
    This KIT will give you all the components that you need to mount the PCB and make it work and also the 3D printed case. But it won't include the external FTDI programmer or power cable for a LiPo battery. *You will have to SOLDER EVERYTHING YOURSELF* following my guide videos so don't worry. By that you will learn more: schematic, layout, soldering, coding, final product.

    Includes:
    • 1 x soldering iron PCB
    • 1 x ATMEGA328p-AU chip
    • 1 x T12 soldering iron tip
    • 1 x 3D printed case
    • 1 x all small components: res, cap, mosfet, display, connectors
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    Ships to Anywhere in the world
    9 backers

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  4. Select this reward

    Pledge €55 or more About $62

    1 x DIY soldering iron FULL-KIT

    * Shipping Included *
    This KIT will give you all the components that you need to mount the PCB and make it work, the 3D printed case, the T12 iron tip but also an external FTDI programmer and a power cable with LiPo connector so you will have the iron ready for use. *You will have to SOLDER EVERYTHING YOURSELF* following my guide videos and schematics so don't worry.

    Includes:
    • 1 x soldering iron PCB
    • 1 x ATMEGA328p-AU chip
    • 1 x T12 soldering iron tip
    • 1 x 3D printed case
    • 1 x LiPo power cable to DC plug
    • 1 x FTDI programmer
    • 1 x all small components: res, cap, mosfet, display, connectors
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    Ships to Anywhere in the world
    14 backers

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  5. Select this reward

    Pledge €60 or more About $67

    1 x DIY soldering iron PREMIUM-KIT

    * Shipping Included *
    This kit is the same as the one above but it will give you 2xPCBs and 2xATMEGA328 microcontrollers instead of just one, in case that something fails while soldering. This KIT will give you all the components that you need to mount the PCB and make it work and also the 3D printed case. But it won't include the external FTDI programmer or power cable for a LiPo battery. *You will have to SOLDER EVERYTHING YOURSELF* following my guide videos so don't worry. By that you will learn more: schematic, layout, soldering, coding, final product.

    Includes:
    • 2 x soldering iron PCB
    • 2 x ATMEGA328p-AU chip
    • 1 x T12 soldering iron tip
    • 1 x 3D printed case
    • 1 x FTDI programmer
    • 1 x LiPo power cable to DC plug
    • 1 x all small components: res, cap, mosfet, display, connectors
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    Ships to Anywhere in the world
    13 backers

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  6. Select this reward

    Pledge €80 or more About $90

    2 x DIY soldering iron BASIC-KIT

    * Shipping Included *
    Two BASIC-KITs. These KITs will give you all the components that you need to mount two PCB and make them work and also the 3D printed cases. But it won't include the external FTDI programmers or power cables for a LiPo battery. *You will have to SOLDER EVERYTHING YOURSELF* following my guide videos so don't worry. By that you will learn more: schematic, layout, soldering, coding, final product.

    Includes:
    • 2 x DIY soldering iron BASIC-KIT
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    4 backers

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  7. Select this reward

    Pledge €400 or more About $447

    10 x DIY soldering iron BASIC-KIT

    * Shipping Included *
    You will receive a box with 10 basic kits for the soldeirng iron with all you need to mount 10 products.

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    Ships to Anywhere in the world
    0 backers

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Funding period

- (40 days)