How To Clean No Clean Flux Residue
Advanced Techniques and Troubleshooting
Avant-garde PTH
One time you get the basics of creating skilful solder joints, it'southward time to acquire some of the more avant-garde PTH techniques that y'all can apply. This video goes over using flux, removing solder jumpers, desoldering components, along with some other tips and tricks.
Here are another tips for PTH soldering:
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Desoldering can often be the best way to learn how to solder. There are many reasons to desolder a role: repair, upgrade, relieve, etc. Many of the techniques used in the video aid in the desoldering process.
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In that location is another method of removing solder from through-holes that we refer to as the slap method.
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If you're e'er unsure if the solder joint yous created is making an electrical connection, y'all tin can use a multimeter to test for continuity.
Property Headers Against a Board
For those that have the dexterity, you can install a row of headers by holding the pins against the board! You can try to use tape and sticky tack every bit mentioned earlier. Below is an instance of installing female headers on the ProtoShield. Even so, you can follow along with male headers or use this technique to solder headers on any board.
Grab a female stackable header and slide it from the superlative side of a shield. With your soldering hand, pull the header with your index finger and thumb toward the edge of the board. Using your other hand, push against the header using your index finger and grip the board with your thumb. Hold the header down with your middle finger. Make certain to avert touching whatsoever header pins where the soldering iron volition touch.
Grab the soldering atomic number 26 with your soldering mitt and tack on one pivot. Echo for each header. Later tacking one pin for each header, yous will want to ensure that the pins are direct and perpendicular to your board. If they are not, you can endeavour to reheat the header pin and adjust the header's alignment.
If the headers are aligned, you can solder the remainder of the header pins on the board to terminate installing the headers on the lath!
Advanced SMD
Looking for more tips and tricks with but your soldering iron? Bank check out these advanced techniques to rework SMD components co-ordinate to Pete.
Cleaning Flux Residuum
When working with lead-free solder, flux tends to get everywhere, exist information technology from the flux in the solder or from external flux applied by the user. Certain types of flux can corrode the PCB and components over fourth dimension, thus it's good to know how to clean your PCBs so they're free of any flux rest. This can besides cause a loftier-resistance shorts between pins as a result of the wet in the air and tiny dendrites forming. Common problems can range from uploading code to an Arduino using a serial-to-USB converter to errors when sending data through I2C.
How do they look like? Well, lets take a expect at the images below. The prototype on the left shows h2o-soluble flux residual on the solder joints. These tin can appear as a yellow or chocolate-brown coating on or around the solder joints. The prototype on the right shows no clean flux that was used on the SparkFun Edge. These can appear gunky and white on the board. Information technology's non-conductive so it can be left on the board.
If you have water-soluble flux rest on the lath, you will want to remove information technology from the board. No clean flux, you should not demand to remove it. The simplest way to clean water soluble-flux from the board is to use a small brush with stiff bristles (toothbrushes piece of work smashing) or a Q-tip. So scrub the solder joint with hot, de-ionized h2o to remove the h2o-soluble flux. Isopropyl alcohol can be used as a substitute for h2o. If you lot must remove no-clean flux from the board, the best arroyo would be to use isopropyl alcohol, rather than h2o. Proceed in heed, you'll accept to cheque the documentation for your solder for the proper cleaning methodology as other types of flux may require acetone.
If you are soldering more a few boards, it may be necessary to clean them in batches. For this, we recommend a crock pot filled with distilled water. The distilled water keeps other impurities and contaminants away from your circuit. Below shows an image of a bombardment holders being cleaned. Non all boards can be dunked in water similar this. So yous may need to manually clean the solder joints. Having a crock pot full of hot, de-ionized water will make the procedure faster.
Make sure to avoid getting water sensors or components that tin can retain water. Certain components are sensitive to h2o, so you should avoid dunking those boards in water and exist conscientious most getting these components wet. Here is a short list of components that should avoid contact with water. If h2o gets trapped in them and you power the board, it will probably damage the component.
- Grapheme LCDs
- 7-Segment LED Displays
- Batteries
- GPS Modules
- Wireless Modules
- Barometric Pressure Sensors
- Slide Potentiometers
- Microphones
- Speakers
- Heart Rate Monitor ICs
When you are finished cleaning the board, you'll want to remove whatsoever excess water off the lath. Compressed air works wonders and so that you exercise not have to expect for it to evaporate. Y'all can also paper towels to dry a board just it may get out pieces of lint behind. Thus low-lint wipes to dry a board would exist improve. If you lot take a hot air gun, you tin can likewise use it to estrus the board up. Just make certain to not cook anything on the lath.
Information technology'south not 100% necessary to clean your lath, however, it will increase the life of your circuit tremendously. Additionally, data sent through serial will be reliable when the board is clean. For more information on PCB cleaning, click below.
Testing and Troubleshooting Solder Joints
In one case you are done cleaning, feel free to check your solder joints with a multimeter set to continuity way as stated before. This is useful if y'all run into issues and need to bank check if a pivot is soldered correctly to a board. For more information, check out our tutorial on how to apply a multimeter.
Looking for troubleshooting tips? Bank check out the hardware checklist in our tutorial for more information!
Source: https://learn.sparkfun.com/tutorials/how-to-solder-through-hole-soldering/advanced-techniques-and-troubleshooting
Posted by: duvalldifors.blogspot.com
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