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SMD August – Cooking SMD Stars

smd-star
For SMD August we’re breaking out the toaster oven and controller to cook some SMD stars.  Participants are likely to end up with a working product but they’re more likely to end up more knowledgable about the electronics fabrication process.

Apparently real SMD hackers only use solder paste and toaster ovens so we’re here to prove them right.

Using a stencil you’ll be applying solder paste, a little better than I did I hope – am planing to add a template to make this easier.

Next you’ll be placing your components by hand.

SMD August – Cooking SMD Stars

Finally baking your project to perfection in the toaster oven.

SMD August – Cooking SMD Stars

There is only one stencil and one oven controller so I’m spreading the tickets out across the night.  Please make sure you can come at the allotted time or buy a ticket for another time. You’re welcome to come early and watch.

The end product is the smd star project from July’s beginners workshop but the focus is on the process.  The price reflects the need to buy the stencil and paste.

No special skills required except patience and reasonable hand co-ordination.

When: 28 August 2014, times vary
Where: VHS, 270 E 1st Ave, Vancouver
Cost: $8 plus Eventbrite Fee
Tickets:

Eventbrite - SMD August - SMD Star Paste and Oven Workshop (7pm)
Eventbrite - SMD August - SMD Star Paste and Oven Workshop (8pm)
Eventbrite - SMD August - SMD Star Paste and Oven Workshop (9pm)

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MakeyMakey Bootloader programming over ICSP

I’ve been asked about how I programmed the bootloader so I’m putting the doco here. For all my AVR work I use a bus pirate v3 with the stk500 firmware. I have a cable I made that adapts the bus pirate to the 6 pin AVR ICSP connector.

For MakeyMakey I made an adapter cable to convert the 6 pin AVR ICSP connector to the MakeyMakey header. I prototyped the cable using individual 0.1″ socket to pin cables and then moved them to single 2×3/1×6 housings to make the cable permanent.

The MakeyMakey schematic decodes the header in two parts

MakeyMakey Bootloader programming over ICSP

A random ICSP image from google images.
MakeyMakey Bootloader programming over ICSP

The pin mapping is

Code:
orange  MISO   6x1-6   2x3-1
yellow  MOSI   6x1-5   2x3-4
green   VCC    6x1-4   2x3-2
blue    GND    6x1-3   2x3-6
purple  RESET  6x1-2   2x3-5
grey    SCK    6x1-1   2x3-3

MakeyMakey Bootloader programming over ICSP