Eggtimer Rocketry Eggtimer TRS Assembly Manual page 9

Assembling your Eggtimer TRS TX Board
Step 1: Sort the Components
Before you start soldering anything, you need to lay everything out and make sure that you are
familiar with all of components, and that you have everything. (Yes, we ARE human and
sometimes make mistakes... if you are missing something, let us know immediately so we can
send you whatever you need). You should have the following parts, check them off as you sort
them. Pay particular attention to the SMT resistors, they all look exactly the same except for
the number that's marked on them; you may want to write the code on the back of the carrier
so you don't mix them up.
Qty Description
__ 1 Circuit board with pre-mounted Bosch BMP180 pressure sensor
__ 1 Maestro Wireless A2235H GPS module
__ 1 Hope RF HM-TRP-915 RF module
__ 1 Atmel ATTINY85-AU Microcontroller (pre-programmed)
__ 1 CAT24C512WI-GT3 512Kb EEPROM (SOIC-8 package)
__ 1 SN74HC02N Quad NOR Gate (14-pin SOIC package)
__ 1 LD1117-33 3.3V voltage regulator (SOT-223 package)
__ 2 NJD35N04G Darlington Transistors (DPAK package, 3 leads with tab)
__ 2 MOCD217M2 Dual Optoisolators (SOIC-8 package)
__ 1 3mm Red LED
__ 1 3mm Amber LED (it may be clear)
330 ohm 0805 SMT resistors (marked "331")
__ 1
1K ohm 0805 SMT resistor (marked "102")
__ 3
2.2K ohm 0805 SMT resistors (marked "222")
__ 3
4.7K ohm 0805 SMT resistors (marked "472")
__ 2
10K ohm 0805 SMT resistors (marked "103")
__ 11