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+While you could grab all components at once then get to soldering, it is best to grab the components ONE at a time, so that things don't get lost or mixed up. +
-The only components not found in those two containers are the LEDs and resistors. There's a container of small LEDs on that same table, and resistors from the soldering challenge can be used. +## Procedure +1. Take your PCB and solder on your 3v3 LDO.
-While you could grab all components at once then get to soldering, it may be best to grab the components one at a time, so that things don't get lost or mixed up. +Double and triple check that you 3v3 LDO is in the correct spot and is not in the 5v LDO spot. Have an instructor check after you finish this step.
-## Procedure -1. Grab a PCB and some resistors. Solder them in. -![Step 1](/media/powerboard-guide-figures/IMG_4046.JPG) +![Step 1](/media/powerboard-guide-figures/power-board-3v3.jpeg) + +2. Next, solder on your 5v LDO. +![Step 2](/media/powerboard-guide-figures/power-board-5v.jpeg) + +3. Now, solder the two 1uF capacitors. **Note that they go on the left of the LDOs** +![Step 3](/media/powerboard-guide-figures/power-board-1uf.jpeg) -2. Next up, solder in the capacitors. **It is critical that the capacitors go in the correct location. Check your orientation with the photo below before soldering.** -![Step 2](/media/powerboard-guide-figures/IMG_4048.JPG) +4. Solder the two 4.7uF capacitors on the other side of the LDOs: +![Step 4](/media/powerboard-guide-figures/power-board-47uf.jpeg) -3. Diode time! Solder in your LEDs and protection diodes. **Check the orientations!!!** When you're done, you'll have something like this: -![Step 3](/media/powerboard-guide-figures/IMG_4049.JPG) +Now, you can choose whether to add the surface mount LED or through hole LED. Since they +both indicate battery power, there is no need to have both on the board. You can also +choose to have the SMD installed on the board and then run wires from the through hole out +to an LED visible from the outside of your payload. -4. The penultimate step: connectors. **Make sure the battery connector is oriented such that when plugged in, the red wire is on the same side as the J1 label. -![Step 4](/media/powerboard-guide-figures/IMG_4050.JPG) +5. If you chose to install the surface mount LED, solder both the surface mount LED and resistor. +![Step 5](/media/powerboard-guide-figures/power-board-smd-led.jpeg) -5. Last but most important: the LDOs! Make sure they're in the correct spots **(U1 = 5V, U2 = 3.3V)** and that the heatsinks face each other. -![Step 5](/media/powerboard-guide-figures/IMG_4051.JPG) +6. If you chose to install the through hole LED, solder both the through hole LED and + resistor. **Note that this photo has the power connector installed, ignore this until + the step that asks you to install it.** +![Step 6](/media/powerboard-guide-figures/power-board-tht-led.jpeg) +7. Next, solder the diode. Be careful bending the leads on the diode since they're thick + and potentially easy to break. +![Step 7](/media/powerboard-guide-figures/power-board-diode.jpeg) + +8. Solder the RBF jack: +![Step 8](/media/powerboard-guide-figures/power-board-rbf.jpeg) + +9. Finally, solder the power connector, insert your RBF plug, and you have a functioning + power board! +![Step 9](/media/powerboard-guide-figures/power-board-complete.jpeg) + +
+Have an instructor check your board and test it before moving on. +
-And you're done! \ No newline at end of file +The final step before you can use your power board to supply your payload PCB is to solder +the 4-pin header. How this is done will depend on how you designed your PCB to fit the +power board, so it is recommended to wait until your main PCB is soldered to test fit and +solder the pin header. \ No newline at end of file