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Eggtimer WiFi Switch

Assembly and Users Manual

Rev A4a

© 2015 Eggtimer Rocketry
All Rights Reserved

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Summary of Contents for Rev A4a

Page 1: ...Eggtimer WiFi Switch Assembly and Users Manual Rev A4a 2015 Eggtimer Rocketry All Rights Reserved...

Page 2: ...t you will have solder that can be used to mount the surface mount parts in the kit Leaded solders have been used for over a century in electronic assembly but you should take the following precaution...

Page 3: ...ng We have made a good faith attempt to comply with all technical regulations and you should too by building it exactly as per the instructions and by not modifying the WiFi module in any way Because...

Page 4: ...computer In addition it has two deployment monitoring channels that can be connected to your altimeter s outputs to show you the continuity status of your deployment igniters and you can monitor the...

Page 5: ...milar organic flux it is almost certainly going to be incompatible with the flux in the no clean solder and make a big mess Extra flux may require excessive heat in order to boil off the flux possibly...

Page 6: ...ints again not essential but VERY helpful ___ A well lighted place to work preferably with a wood or metal surface also preferably not carpeted ___ Some PAPER masking tape do NOT use Scotch tape or el...

Page 7: ...e regulator SOT 223 package __ 2 MOCD217 Optoisolators SOIC 8 package __ 1 NTD4965NT4G MOSFET Larger package with 3 leads __ 1 3mm Red LED __ 1 3mm Amber LED may be clear __ 1 1K 1206 resistor marked...

Page 8: ...parts before you solder and that you make SURE that you have them pointed the right direction before soldering Like the old adage says Measure twice cut once If you solder a part onto the board incor...

Page 9: ...ave any questions about the assembly please send us an email to support eggtimerrocketry com BEFORE you start building We generally answer all questions the same day and we do our best to ensure your...

Page 10: ...cause you don t have to clip the leads and they just plain look cooler Here s how to mount them once you do one or two you ll find that it s actually pretty easy Lightly tin only ONE of the two pads o...

Page 11: ...WiFi Switch logo the right side should be where the mounting holes are __ Mount the Optoisolators Locate the two spots for the optoisolators they re the 8 pin pads on the left side of the board The op...

Page 12: ...lder on the large pad just enough to cover it Place the voltage regulator IC in place and hold it down then heat up the large pad on the voltage regulator until the solder starts to flow Hold your sol...

Page 13: ...dentical and are unfortunately not marked the 10 uF capacitors are the ones that have one MORE i e there are TWO 10 uF capacitors but only ONE 1 uF capacitor and they come in a clear plastic carrier t...

Page 14: ...ads Heat up the lead over the tinned pad until the solder starts to flow onto the lead wait a few more seconds then remove the iron and let it cool for at least 5 seconds before you let it go Note tha...

Page 15: ...heck all of the solder joints carefully with a magnifying glass or 10x jeweler s loupe to make sure that you have good solder coverage and you haven t created any solder bridges When you re satisfied...

Page 16: ...ight pads on either side Cut a piece of paper masking tape so that it fits between the row of pads where the WiFi module goes from the edge just past the pads to the opposite edge of the module This w...

Page 17: ...r to the TOP of the pad right next to the wire You only need a little bit you ll see it flow out and drop down the hole when you got it right Be careful not to get any solder on the metal shield cover...

Page 18: ...ered Note Your WiFi module may have six extra pads opposite the antenna do not solder these or do anything at all with them __ Mount the 1uF capacitor Locate the spot for the 1 uF capacitor just below...

Page 19: ...e spot for the Red LED it s the one on the bottom left hand side of the board marked ON Note that it is polarized you need to match up the LONG lead on the LED with the pad on the board Insert in in p...

Page 20: ...on the board Insert in in place and use a small piece of paper tape to hold it to the board Turn the board over solder the leads to the pads and clip the excess leads __ Mount the Header Insert the 3...

Page 21: ...blocks where the wires go should face the markings on the board Turn the board over and solder the pins to the pads Get out your lighted magnifier and carefully inspect all of the solder joints Make s...

Page 22: ...ews if you used the terminal block Connect your battery to the pigtail The red LED marked PWR should blink three times go out for a second or two then remain on if it does congratulations You re done...

Page 23: ...ies work really well for tidying up the wires Also we strongly recommend that you zip tie the wires connected to the WiFi Switch to your sled to provide strain relief for them In general if a wire can...

Page 24: ...to tin just the very end of the wire to prevent it from fraying a loose strand of wire can short out the battery which can cause a fire if you re using LiPo batteries so check your connections carefu...

Page 25: ...s so it typically draws under 1 mA of current you don t need to worry about it firing your igniter but it s plenty enough current to tell the optoisolators to turn on To make life easier we ve tried t...

Page 26: ...wire GND WHITE wire TX GREEN wire not used Using an ASCII terminal program such as TeraTerm or HyperTerminal connect to the serial port at 115 200 baud 8 bits no parity 1 stop bit Now connect the bat...

Page 27: ...type the following URL into the address box http 192 168 4 1 You should immediately see the WiFi Switch page We recommend that you add this page to your Favorites and or bookmarks to make it easier t...

Page 28: ...d enter the 4 digit validation code then click on the Submit button The ON LED should come on and the WiFi Switch s web page should show that the Output status is now ON red highlighted box If you mak...

Page 29: ...y true of those large projects in which it may be difficult to get to the AV bay to hear the altimeter s beeping Once you ve checked everything out close up the AV bay and finish prepping your rocket...

Page 30: ...keep things from working If you have a cold solder joint heat it up and put just a little bit of solder on it the main idea is to get a little more flux on the joint If there s too much solder use a...

Page 31: ...hem is bad is very small Nevertheless it is always possible that something may be wrong there may be a bridge on the PC board itself etc If you have gone through all of the troubleshooting steps and t...

Page 32: ...t on ESP8266 12 module Bad solder joint on header Don t see an WIFI_SW_ SSID Bad solder joint on ESP8266 12 module Weak battery Can t connect to WIFI_SWITCH SSID Bad passkey hook up the serial cable a...

Page 33: ...r the space between the digits on the passkey though To Connect to your Altimeter Connect your battery to the IN terminals to BATT to BATT Connect your Altimeter battery input to the OUT terminals OUT...

Page 34: ...ggtimer WiFi Switch will perform substantially per the instructions We try very hard to make sure that our stuff works the way we say it does but because software isn t perfect we can t always anticip...

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