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Linea TJet - LED Mods

Discussion in 'Do It Yourself' started by Parantap Chatterjee, May 11, 2013.

  1. Parantap Chatterjee

    Parantap Chatterjee Regolare

    Messages:
    250
    Gurgaon
    Gurgaon
    Linea T-Jet
    Yes , that would work. However I yet to examine the type of connectors the tail lights use , possible wiring schemes , harnesses etc. :) Modding the spoiler light was a safer bet.

    Am I allowed to post the exact prodcut links ? Do you know ?
  2. thomman85

    thomman85 Esperto

    i believe you can share information and product links.. its not like you are marketing it.
    Last edited: May 31, 2013
    1 person likes this.
  3. rishike007

    rishike007 Esperto

    Messages:
    1,416
    Mumbai-Pune
    Pune- Mumbai
    Grande Punto 1.2
    As this is DIY thread you can share the links so that people will try at there ends too :)
    1 person likes this.
  4. thomman85

    thomman85 Esperto

    very well answered..
    1 person likes this.
  5. Parantap Chatterjee

    Parantap Chatterjee Regolare

    Messages:
    250
    Gurgaon
    Gurgaon
    Linea T-Jet
  6. Parantap Chatterjee

    Parantap Chatterjee Regolare

    Messages:
    250
    Gurgaon
    Gurgaon
    Linea T-Jet
    DIY Fail - Homemade PCB Attempt

    As the title suggests , this is a failed DIY - read ahead at you own risk :)

    Having done the interior lights and spoiler brake lights with LED's , I decided to convert the boot lights as well , but using DIY PCB's. The DIY kit was purchased from EBay. Theoretically , the basic steps involved in etching a PCB are :


    • Create the board layout using a PCB software . I used PCB Wizard. Various other software are also available e.g. ExpressPCB , Fritzing (Multi-platform)
    • Transfer the layout using a laser printer to Toner Transfer Paper/Photo Paper and iron onto copper clad board
    • Etch the board using Ferric Chloride or other etchant
    • Remove toner using acetone

    The kit available on EBay is pretty self-sufficient and includes most components you would need to make a PCB. The only other things required are a laser printer (inkjet will not work) and familiarity with a PCB design software.

    The intended board was to have a simple 3x3 LED array , resistors and a voltage regulator. This is what the output looks like , printed on Toner Transfer Paper (comes with the kit).

    IMG-20130609-00113.jpg

    Also featured is the 5cmx4cm copper board

    Took me the better part of the afternoon to get the layout correct - component placement , printing at 100% , making sure all edges line up , trace width , hole sizes etc.. anyways , moving on ..:)

    Here is the design ironed onto the board.

    IMG-20130609-00116.jpg

    Red flag I failed to notice - some of the holes already looked warped. The toner probably got smudged due to too high a temperature during ironing and further smeared by incorrect rubbing. The difference from the design on paper is evident. There everything is sharp and all edges are well-defined.

    After this the board was etched using a Ferric Chloride solution. The packet of etchant was wrapped in around 10 layers by the seller :) and for good reason too. It stains everything it comes in contact with and should be handled carefully. To etch the board , you can either just put it in the solution and move it around. Alternatively , you can take a sponge , dip it in the etchant and rub away lightly on the copper. i used the second method and it was surprisingly fast. Took me about the 4-5 minutes to get all the copper off. It is suggested that you leave as much copper on the board as possible. While this may consume more toner while printing , it significantly reduces the etching time. The resultant board with holes drilled with a 1mm bit and a dremel :

    IMG-20130609-00117.jpg

    No go :mrgreen:. A pre-requisite of drilling the holes accurately is that the transfer should be fairly precise so that the holes have well-defined centers. The centers are obviously etched leaving you with a dimple surrounded by copper. The dimple acts as a guide for the drill bit. Since the holes I got were warped , the drill bit wandered all over the place and actually stripped some copper for some of the holes. On the brighter side , the component placement/sizes were spot on.

    I will just call this Board Rev. V1 and take another attempt in the coming weekends !
    2 people like this.
  7. rishike007

    rishike007 Esperto

    Messages:
    1,416
    Mumbai-Pune
    Pune- Mumbai
    Grande Punto 1.2
    Best of luck for the next attempt. This time you will definitely make it working... :)
  8. Parantap Chatterjee

    Parantap Chatterjee Regolare

    Messages:
    250
    Gurgaon
    Gurgaon
    Linea T-Jet
    LED Boot Light

    Finally managed to get the PCB and the boot lights done :). Some pictures :

    IMG-20130615-00122.jpg

    IMG-20130615-00123.jpg

    IMG-20130615-00124.jpg

    DSC_0018.jpg
    3 people like this.
  9. Parantap Chatterjee

    Parantap Chatterjee Regolare

    Messages:
    250
    Gurgaon
    Gurgaon
    Linea T-Jet
    Watch this space :idea:

    IMG-20130707-00131.jpg
  10. PatchyBoy

    PatchyBoy Esperto

    Messages:
    2,438
    Bangalore
    I am watching :D :D

    Rajan

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