- (13142) Stockton STEM Badge battery
Note the orientation of the holder; reversing it will make it difficult to insert the battery later. - (12938) Stockton STEM Badge battery
The battery is a typical CR2032 button cell. Notice which side the "+" is on. - (12936) Stockton STEM Badge battery
The battery holder is a simple metal cage that solders to the underside of the board. - (12887) Stockton STEM Badge completed
Press the button to start the lights! - (12835) Stockton STEM Badge LEDs
The case of an LED can crack if the legs are bent too close to it; even after placing the LED on the board, only bend the legs slightly to hold it in place. - (12796) Stockton STEM Badge IC and socket
The chip, an integrated circuit, or IC, must also be used the correct way round. Both the chip and its socket have a notch at one end to identify its orientation. - (12738) Stockton STEM Badge IC
The IC pins need to be straight and line up with their receptacles in the socket. - (12684) Stockton STEM Badge battery
It is possible for the holder to become hot during soldering; be careful when handling immediately after soldering. - (12607) Stockton STEM Badge IC
When inserting the IC, firm but controlled pressure is needed to avoid bending the pins. - (12548) Stockton STEM Badge battery
The battery should sit snugly under the holder. - (12535) Stockton STEM Badge battery
Note the orientation of the battery. The "+" side contacts the battery holder. - (12526) Stockton STEM Badge resistors
These are 47 ohm resistors; they limit the current supplied to the orange, yellow and green LEDs. The blue LED does not require one. - (12351) Stockton STEM Badge IC
Once pushed all the way in, the IC may sit above the socket, but it will be parallel to it. - (12327) Stockton STEM Badge resistor legs
The legs are then carefully bent to about 45 degrees to hold the resistor in place for soldering. - (12237) Stockton STEM Badge LEDs
While all components can be destroyed with an excess of heat during soldering, LEDs are especially susceptible to this.