Robot Badge

Overview

These are notes and files relating to the 'Learn To Solder' Robot Badge.This badge kit has been produced to use at events as a simple soldering exercise and promote the hackspace. This badge was based upon a simple flashing LED badge that was seen at UK Maker Faire 2011 in Newcastle. This robot shaped badge was designed by Matt Little based on an idea by Rob Keating from PCB manufacturers, Beta Layout. Beta Layout produced a number of batches of these PCBs for Nottingham Hackspace.

Parts List - Simple

The simple version of the badge is just an LED wired derectly with a battery. A colour changing LED is used to make it a bit more interesting.

Part	Details	Supplier
3V Battery	CR2032	eBay 1 Cost: £10 for 100 eBay 2 Cost: £10 for 100
Battery clip	To hold above	Rapid: 18-3585 Cost: £0.312 100+ Farnell: 908654 Cost: £0.442 100+ Digikey UK: BK-888-ND Cost: £0.1674 100+
LED	5mm colour chaging	Rapid: 55-1906 £0.4326 100+ eBay 1: Cost: £6.99 for 30 eBay 2: Cost: £3.50 for 30
Pin	13mm panel pin	Stones hardware £0.56 for box (100pcs) eBay 1 £1.60 for box
Badge Clip	To fit above pin	eBay 1: Cost: £4.99 for 100 eBay 2: Cost: £3 for 100

Parts List - SMD

The SMD version of the badge was designed for more advanced users so they can learn to do surface mount soldering or use an SMD oven. The circuit is a Flip Flop Two Transistor Flasher. The schematic diagram is here: ADD a PHOTO/PDF HERE

Part	Reference	Details	Supplier
Capacitor	C1, C2	Control flash rate. 10uf used	Supplier
Resistor	R2, R3	Control Flash Rate. 100k used	Rapid: 72-1437
Resistor	R1, R4	Limit LED current. 0 ohm with 3V battery.	Supplier
Transistor	Q1, Q2	NPN type. S0323. BC817W used.	Farnell: 2114873
LED	D3, D4	Details	Supplier

100k resistors Rapid - 72-1437 £0.15 for 100pcs 10uf capacitors RS - 7407546 £0.06 each 0 ohm ressistors Rapid - 72-1207 £0.15 for 100pcs S0232 transistor NPN RS - £0.012 each for 200+pcs LED green - RS 466 3908 £0.06 for 40+ LED red - RS 466 3914 £0.06 for 40+