sparkfun Weevil Eye Information & Instructions Download Page 1

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The Weevil Eye kit is an introductory electronics kit designed to help the novice electronics

enthusiast learn about things like soldering and resistance. The Weevil Eye is designed

to look like a little beetle whose eyes glow in accordance with the ambient light

level – the less light detected, the brighter the friendly weevil’s eyes will glow. There is

no programming involved and all soldering is beginner friendly, so this kit is perfect for

the embedded electronics novice.

Kit includes:

• Weevil Eye PCB
• Red Diffused 5mm LEDs (qty 2)
• 47k Ohm Resistor
• 220 Ohm Resistors (qty 2)

• Transistor (2N3904)
• Miniature Photocell
• Coin Cell Battery Holder
• 20mm Coin Cell Battery

Kit Information & Instructions

Weevil Eye

WARNING:

Please wear safety goggles. This kit requires soldering and clipping leads.

Summary of Contents for Weevil Eye

Page 1: ...ed the brighter the friendly weevil s eyes will glow There is no programming involved and all soldering is beginner friendly so this kit is perfect for the embedded electronics novice Kit includes Wee...

Page 2: ...straight onto the iron and try to apply the solder with the iron SOLDERING TIPS SOLDERING TIPS Solder flows around the leg and fills the hole forming a volcano shaped mound of solder Error Solder ball...

Page 3: ...Bend the legs downward Locate the 47k Resistor position on the board 47K 220 220 QUICKSTART YOUR FIRST COMPONENT STEPS1T012 3 4 Insert the resistor into the PCB 5 Push the resistor in so it is nearly...

Page 4: ...the soldering iron s sweet spot so it touches both the leg and the metal ring Hold for two seconds 11 Solder the next leg into place 12 Clip off the excess 10 Your solder joints should look like this...

Page 5: ...ottom of the board Orientation for this device doesn t matter Transistor 2N3904 It s the only three pin device and it s black Notice the silkscreen white print on the board resembles a half circle Mak...

Page 6: ...nents are polarized CONTINUE ON THE TOP OF THE BOARD LEDs Insert the LEDs into the front of the board Each LED has a short leg and a long leg The short leg goes into the hole labeled Also make sure it...

Page 7: ...E BOTTOM OF THE BOARD Battery Clip Turn the board over and align the battery clip with the white footprint on the Weevil Eye s back Make sure the legs stick through the board and that the part is layi...

Page 8: ...f not cover the sensor with your finger to test If your Weevil s eyes aren t lighting up don t worry Start with some simple troubleshooting Check your solder joints to make sure your components have a...

Page 9: ...melt metal It is normal for the handle of the soldering iron to heat up a bit Hold it like a pencil and move your hand further away from the tip if the heat is uncomfortable The solder smokes because...