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# chienline

Just Can't Stop Thinking
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Just an ordinary person who loves #thinking and #tinkering

## Achievements

500+ Comments Earned a silver medal
10K+ Views Earned a bronze medal
Contest Winner Second Prize in the Survival Ready Contest
Contest Winner Second Prize in the Pocket-Sized Contest
Contest Winner Runner Up in the Puzzles Challenge
Contest Winner Runner Up in the Automation Contest 2016
Contest Winner Second Prize in the PVC Contest 2017
Contest Winner Runner Up in the Flat Pack Contest
Contest Winner First Prize in the Wizarding Contest
Contest Winner Runner Up in the Sci-Fi Contest 2016
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• chienline commented on chienline's instructable Multi-tool Value Added Features2 days ago

Yes, once you own a Leatherman, its durability will stand for lifetime. They give the best 25-year guarantee.But if you have extra money, \$60 Skeletool (by now) is a good deal for minimalist yet stylish.

• chienline followed jollifactory5 days ago
• chienline completed the lesson Composition in the class Photography Class8 days ago
• chienline commented on chienline's instructable Arduino Battery Voltage Indicator11 days ago

You can define it as long because we don't care about millisecond (decimal). You can define it in printVolt() or make it global if you want to use it outside printVolt()^_^

• chienline commented on chienline's instructable Arduino Battery Voltage Indicator12 days ago

The positive post of battery (+) should go to Vin, not 5V. Two resistors are good for 9V.Thanks for the information using Proteus Simulator. I shall try it too ^_^

If it is a standalone power source, then you should measure the voltage when it is fully charged and also when it dies (your project stop working/not working properly). The formula remain the same :OnePercent = (FullyCharged - BatteryDies) / 100;BatteryPercentage = (ReadVoltage - BatteryDies) / OnePercent;The sketch above reads the battery voltage continuously. If you want to read every 10 seconds, the simplest way is adding delay(10000); in loop section rather than complicated but more accurate timer implementation.You know about millis() then I assume you know how to write simple Arduino sketch just like me ^_^ then I can simply explain the algorithm I guess, because it needs testing phase to write working sketch and I think I don't have that time by now :DFor rough estimate remaining...

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• chienline commented on chienline's instructable Arduino Battery Voltage Indicator13 days ago

So you are going to measure your car's battery voltage. I won't say this device doesn't work but I will explain further regarding car's battery. Let's pick a normal family car or SUV which is rated 12V. It is fully charged at around 12.7V. When the engine is running you will get 13.7V - 14.7V, that is the output of the car's alternator.When your battery dies? When it reaches 11.9V, but this is not telling you about time to replace your battery. You may still charge it with external charger to working voltages, or you may not, there are a lot of possibilities regarding to car's battery such as abnormal discharging.The range of working voltage of a car battery is 11.9V to 12.7V, so you can calculate it like this :100% = 12.7 - 11.9 = 0.8V1% = 0.8 / 100 = 0.008VBattery percentage = (ReadVo...

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• chienline commented on chienline's instructable Arduino Battery Voltage Indicator4 weeks ago

This project do the same purpose to me. I wanted to know if my battery can run my RC toy should I charge it before playing.Let us say my RC needs at least 6V to run its Arduino and motors and every modules in it. I am using a 7.4V battery that is fully charged to 8.4V. Do some math here :8.4 - 6 = 2.4 (this is 100%)2.4 / 100 = 0.024 (this is 1%)then we can set in the code :BatteryLife = 100 - ((8.4 - voltage ) / 2.4 * 100)Now you got your BatteryLife in percentage before your device stop working.

All you need is a DC-DC voltage step down module that cost \$1 or less. Try to set it up as the picture below. Now your Arduino is powered by the same battery but with acceptable voltage.If your battery is fully charged at around 18 volts then A0 will read 4.5 volts. You change the code :float voltage = sensorValue * (5.00 / 1023.00) * 2;to float voltage = sensorValue * (5.00 / 1023.00) * 4;because you have divided the voltage into four equals-- that is 4.5V read by your Arduino through A0 pin, then you need to calculate back to get the real voltage that is 18V.

• chienline commented on chienline's instructable Arduino Battery Voltage Indicator4 weeks ago

Do not feed 15V to your Arduino Vin. Arduino can only take up to 12V and its I/O pin can only take up to 5V.Use a voltage regulator for your Arduino (convert your 15V to 5V) and use voltage divider (4 resistors needed because your 15V could be fully charged up to 18V) before A0 pin because we need to read the real voltage.

• You are welcome ^_^

• chienline commented on chienline's instructable Arduino Battery Voltage Indicator2 months ago

This is it, isn't it? :D

• Have you tried Step #2 ? Wiring the ESP-12 with 10K resistors as pull-up or pull-down. I did need those resistors to make it work as far as I can remember.

• chienline's entry Card Holder With Ejector is a winner in the Pocket-Sized Contest contest 2 months ago
Winner!
• What kind of flashtool are you using? Take a look at Step#5 above :)That was a reset trigger by reset pin just like what I had at Step#4. So you should move to Step#5, download a more advanced flash tool. Should be a newer version of that tool by now :)

• Try to decrease the BaudRate step by step down to 9600 and see which one works ;)

• chienline commented on chienline's instructable How to Win Prizes at Instructables2 months ago

Pssstt!! Now they might send you a gift pack or something maybe when your Instructable got included in their weekly newsletter or when they just thought you deserved it. I think this is a new way of rewarding replacing the 4-featured in a month. So, keep making things, keep writing, and you will get a surprising message in your inbox ;)

• chienline followed AlvaroMaker2 months ago
• chienline commented on chienline's instructable Card Holder With Ejector2 months ago

Thank you. Just curious how it works, then I made it.... my way ^_^

• chienline's entry Card Holder With Ejector is a finalist in the Pocket-Sized Contest contest 2 months ago
Finalist
• chienline commented on chienline's instructable How to Win Prizes at Instructables3 months ago

You joined Instructables about six months ago and you have written so many featured instructables. That is "Awesome!". You are doing good. You are already a winner here. Okay, I'll try to explain a lil' bit.The love sign (read Favorite) is a little different from Instagram's love or Facebook's like. Some users use it the same way as Instagram or Facebook, but I (and I believe some people out there) use it more like a bookmark. Things I think they are "cool" or "useful", I will put them in my favorite list as a collection. When I forget the title and want to make it one day, I will search in my favorite list rather than the whole Instructable database. So I won't put so many favorites in the list or it will be hard to find one.The comment. Mostly people with...

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• chienline followed Creative Mom CZ3 months ago
• chienline's instructable Card Holder With Ejector's weekly stats: 3 months ago
• 4,761 views
90 favorites
• chienline commented on chienline's instructable Card Holder With Ejector3 months ago

Thank you for both the vote and wishes ^_^

There are plenty beautifully made commercial products in the market. I was just curious about how it works. This is the beauty of sharing knowledge ;)

• You are welcome ^^

• chienline commented on chienline's instructable Card Holder With Ejector3 months ago

Thank you. Yes, it can be 3D printed. Unfortunately I don't have one :'(At first I even wanted to make it from wood. The problem was thisckness accuracy of 0.76 mm which made me think of using a card itself.

• chienline entered Card Holder With Ejector in the Trash to Treasure contest 3 months ago
• chienline entered Card Holder With Ejector in the Pocket-Sized Contest contest 3 months ago
• Feel free to ask ^_^They are all 10.5". I was about to get few shorter spokes but I couldn't find them at local stores. Finally I used universal 10.5" on the wheels. Some were half an inch inside the rims but thanks to the double-wall rims prevent the spokes stabbed into the inner tubes :)

• chienline commented on chienline's instructable Arduino Battery Voltage Indicator3 months ago
• chienline followed Phil B3 months ago
• chienline commented on chienline's instructable How to Win Prizes at Instructables3 months ago

Thank you, Sir for your input. Surely iTeam need help from good Authors to help narrowing the finalists. As I said I am not an insider as well and I wrote this Instructables simply to deliver rough guidelines and also alternative ways to win prizes from Instructables apart from contests. Also to encourage dissappointed Authors who have written good instructables but felt like there're conspiracies because they didn't win any contest.

• chienline followed Daniel Stabile3 months ago
• chienline commented on Daniel Stabile's instructable 7 Scrap Leather Projects3 months ago

I think all I need is a rotary punch. Everything else, I have them somewhere around me :D

Yummy! This makes me wanna buy some tools and start leather projects ^^Well done!

• chienline's instructable How to Win Prizes at Instructables's weekly stats: 3 months ago
• 757 views
14 favorites
• chienline commented on Mrballeng's instructable Sea Glass Pendant3 months ago

Melting iron is a big task. Soldering iron... Wow! Nice jewelry.

• chienline followed BrittLiv3 months ago
• chienline commented on chienline's instructable How to Win Prizes at Instructables3 months ago

Ouch.. now I am messing around with code, tags. Using "enter-key" do bring the text to next line but "double-enter-key" does not separate to a new paragraph. <br><br> Last time I use double "BR-tag" it jumps down two lines. <br> Yesterday I use single "BR-tag" and the tag is printed. <p> Should I use "P-tag" instead? Just curious... :D

Hi, BrittLiv, it's good to know that there are more people can feature instructables, even outside the iTeam. Now there will be no more doubt, no way that one's instructable is missed from reading by iTeam.<br>I love making things. Mostly I think of things that can help myself with my daily activities, DSLR Cowboy Holster ; Wireless Router Remote Reboot ; Arduino Auto Knock ; and some other instructables, the rest were just for fun, jazz-up the contests. I also write my own codes for business inventory and some scripts to ease my daily works :)<br>Sometimes I am just boring and out of idea about what to make. Then I check the contests page to boost my brain. Surfing the net and thinking, inventing, and it works. As you said, I love what I make and enjoy the making process. W...

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Hi, BrittLiv, it's good to know that there are more people can feature instructables, even outside the iTeam. Now there will be no more doubt, no way that one's instructable is missed from reading by iTeam.<br>I love making things. Mostly I think of things that can help myself with my daily activities, DSLR Cowboy Holster ; Wireless Router Remote Reboot ; Arduino Auto Knock ; and some other instructables, the rest were just for fun, jazz-up the contests. I also write my own codes for business inventory and some scripts to ease my daily works :)<br>Sometimes I am just boring and out of idea about what to make. Then I check the contests page to boost my brain. Surfing the net and thinking, inventing, and it works. As you said, I love what I make and enjoy the making process. Winning a prize is awesome, but "thinking and making" fill my days ^^<br>"Easy to replicate" was not my intention really, what I mean with "the easier the better" is the step by step provided are easy to understand and easy to follow to replicate the process. And the "easy to get materials" means people can buy it in the market if they don't have it at home. Not like one of my instructable : Side Table From Old Swing Chair, yes, that was a limited swing chair and no one can replicate the steps if they don't have the same chair :D That table stays in my room and does a good job as a table until today :)<br> All inputs in comment section are positive and I will make an edit later, with the words from the True Professional inside iTeam :)

• chienline commented on chienline's instructable How to Win Prizes at Instructables3 months ago

Yes Yon, you're right about good photos. 5 minutes project can be stretched to few hours when we are taking good photos for step by step. Sometimes we find out that we don't have enough photos to explain the step or the photo we have is not good enough, then we have to go back there to take another one. That makes people desperate when they compare the effort they have done and still don't win anything. That's why I share tips to win something, to encourage them keep writing. Good to hear that some enjoy the making process just like me and do not bother about winning or not. In my cover image I just want a simple picture represents the title, yes that is my own hand :D and I did think of The Robot before. Just didn't want it hanging/hovering on the white spaces, and the black space on...

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Yes Yon, you're right about good photos. 5 minutes project can be stretched to few hours when we are taking good photos for step by step. Sometimes we find out that we don't have enough photos to explain the step or the photo we have is not good enough, then we have to go back there to take another one. That makes people desperate when they compare the effort they have done and still don't win anything. That's why I share tips to win something, to encourage them keep writing. Good to hear that some enjoy the making process just like me and do not bother about winning or not. In my cover image I just want a simple picture represents the title, yes that is my own hand :D and I did think of The Robot before. Just didn't want it hanging/hovering on the white spaces, and the black space on the throphy was just too small. Then I decided to leave the Robot and put that orange text there :D

• chienline commented on chienline's instructable How to Win Prizes at Instructables3 months ago

Upss... sorry my friend, unfortunately, like @randofo said that four-featured-instructables giveaway is no longer in effect. It was 2016 when I got notified in my inbox. Don't worry, they are working on (or maybe they already have) another way to reward Authors, so just keep writing and sharing your ideas with us. Maybe on your 25th featured instructables or on your tenth Homepage Featured Instructables that they will send you something? Let's stay tuned and figure it out ;)Currently you can join and fight on running contests and you can try "I Made It!" Madness! where there are less participants and more chances to win ;)

• chienline commented on chienline's instructable How to Win Prizes at Instructables4 months ago

Hi, Randy,I have guessed that you must be one of few who keep watching contests entries ^^ and about Step #4 : Analysis, I didn't write it that clear because I'm afraid it will become too long and be my private diary. Homepage featured instructables are good instructables featured by one of you, then your instructables are the root of all good instructables. Yes, you are human as we are. No one is perfect. We learn how you write, how you explain step by step, how you think, just like we are learning from teachers at school. Most of the time we can feel the emotion from comments. "I love the way you cut that hole." I used to cut a hole that way, now I know that is a special way unlike others. "Do I have any other unique-ways to share?" That question will make us think...

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People with large social media presence may have advantages and may not. When their friends join Instructables to vote, they may see other cool projects and vote for them as well, that's fair :)Actually I wan't to post this in Community Topic, but thinking that people are likely flipping the front pages of Instructables only, and seldom do they go the Community Section, I decided to put it as an instructable post. So that they know about Upcoming Contests, The Clinic, Featuring Guidelines, and most of all, they cancelled their leaving Instructables ^^

• chienline commented on Julian Do It's instructable The Different Picture Frame4 months ago

Cool... it will match any minimalist modern architecture ^^

• chienline followed Julian Do It4 months ago
• chienline commented on chienline's instructable Oil/Fuel Filter Opener4 months ago

Yes, don't spend too much for seldom use tool. We have heavy trucks and light trucks here and we use it more often but in my case those truck drivers just can't be gentle to my tool. Why should I spend much money on that tool for them to break while I can make my own free tool? ;)Bicycle chain is perfect if you are going to make one. That large chain from motorcycle was what I had in hand at that time. Now we have three DIY chain-wrenches with different sizes laying on the shelves.

• chienline commented on chienline's instructable Tweak My Personal Organizer4 months ago

Thank you ^^

• chienline commented on Lucasd136's instructable Keytool - 5 Tools in Your Pocket!4 months ago

Nice. Compact. Brilliant. ^^

• chienline followed Lucasd1364 months ago
• chienline followed Paige Russell4 months ago
• Sure it is, but we pay much more for the shipment than the jig itself :DI also made my own pegboard but I'm not a perfectionist and I can live with that :D

• chienline followed canida and instructables4 months ago
• 6 weeks ago, sorry I missed your question for so long.Last year I was building my bike, and that was my first to be honest. Searching on the net put me in the same condition like you "will/will not work".This is my advice, if you can get a proper hub (48 holes) to your larger rims, go get it. If you can't because of budget problem or you just can't find that 48H-hub, then start constructing your wheel, you might need different size of spokes or you can try different style of lacing combination :)I can't help you further than tis because I don't own the 36H-hub and 48H-rim.

In my case, it turned out to be four (likely, it's been a year) too-long spokes but since I have double wall rims, everything goes well, those too-long spokes won't stab into my inner tube. Buy more spokes at different length instead of rim for cheaper option ^^Here I don't have the option to "buy more spokes" because they are selling standard size of spokes only.My wheels are good until today ;)

• chienline followed timdekker18254 months ago
• chienline commented on Jonny Builds's instructable Build a Skateboard From Scrap Acrylic4 months ago

Well, just like the author said, all skateboards scratch.PMMA does resistant to scratches, but we are talking about jump and smash and grind. I am no player, just fan. Author took my previous comment as pride and not complaint. This is an amazing piece of art, truly, and he got my vote ;)

• chienline made the instructable No-Weld Spark Plug Aeroplane4 months ago

The simplest project ever. I made two of this for my sons using popsicle sticks because metal will be hard to shape. I also add propellers stabbed into the center electrode. Technically they are spinnable but stuck at the side electrode :D

• chienline commented on Jonny Builds's instructable Build a Skateboard From Scrap Acrylic4 months ago

Acrylic? You gotta be kidding. It will scratch badly. I think it will stay in your living room or bed room. You get my vote ;)

• Unfortunately I am far away from US or UK. But there must be a way out to pay the shipment :DThanks for the link anyway ;)

Wonderful. Hope to see this jig sold in the market, because I don't have 3D printer (T-T)

• chienline commented on chienline's instructable Tweak My Personal Organizer4 months ago

Thank you. Photography is my new hobby and I will keep improving my photography skill ^^

• chienline entered Tweak My Personal Organizer in the Trash to Treasure contest 4 months ago
• chienline entered Tweak My Personal Organizer in the Paper Contest 2018 contest 4 months ago
• chienline commented on chienline's instructable Arduino Battery Voltage Indicator4 months ago

Great :)About Vin, yes on Arduino Uno it can take up to 12V :)

• chienline commented on chienline's instructable Arduino Battery Voltage Indicator4 months ago

It is better to power up your Arduino with a separate power supply. If you use the same battery to power your Arduino, make sure you have a voltage regulator circuit to step down the voltage to 9V, because 12V battery may be fully charged to some kind of 14V. About high current normally Arduino will draw only as much as needed, but it is better to put a fuse in case of short-circuit. Technically, following this instructable by using 3 pieces of 10K resistors and a little change in the code (*2 to *3) are all you need.

• chienline commented on chienline's instructable Arduino Battery Voltage Indicator4 months ago

Technically you can use 10 x 10K resistors to divide the voltage. But, looking at your high current battery which may harm your Arduino, it is best to take another option. There are high current (30A) digital voltmeter and ammeter in markets. You just need to pick one and learn how to connect it to arduino+gsm shield if you say you want to send message to your phone when the battery is low.

Sorry for a very late reply. For 12V battery you can use 3 identical value resistors. Let's say 3 x 10K resistors. Simply change this code: float voltage = sensorValue * (5.00 / 1023.00) * 2;To this one: float voltage = sensorValue * (5.00 / 1023.00) * 3;Regarding to .csv file, I have never worked with SD card module but you can take a look at this topic : https://forum.arduino.cc/index.php?topic=447602.0

• chienline's instructable Name Card Stand (Quick-and-Dirty)'s weekly stats: 5 months ago
• 131 views
1 favorites
• chienline commented on chienline's instructable Slophi Screwdriver Bit6 months ago

The magnetic extension is not deep enough for standard bits in the market. When you put the phillips bit in, it won't catch the hex of the bit, unless you shorten it. Easy for slotted bit but not for phillips head :D

• chienline commented on chienline's instructable Arduino Battery Voltage Indicator6 months ago

Yes, that is so true. Omit the " * 2 ", because I was using 2 resistors as voltage divider, then I had to multiply by 2 to get the divided voltage. In your case, when you remove " * 2 " (read: multiply by 2), you will get 4.2V, try to measure using a voltage meter ;)

• Keyes L298N v2 should not be any difference from v1 and you can see the wiring on Step #3.If they are different can you post the link to your product? Maybe I can help you find the wiring ;)

Glad to hear that.They are similar. Just follow the pin labels and you are good ;)

• chienline's instructable Slophi Screwdriver Bit's weekly stats: 6 months ago
• 1,042 views
12 favorites
• chienline commented on chienline's instructable Slophi Screwdriver Bit6 months ago

You are welcome ^^

• chienline commented on chienline's instructable Slophi Screwdriver Bit6 months ago

Thank you, Sir :)

• chienline commented on chienline's instructable Slophi Screwdriver Bit6 months ago

Not buying from me. BUY the STANDARD bits and extensions in bulk and tweak them by yourself :D

• chienline followed LanceBuilt6 months ago
• chienline entered Slophi Screwdriver Bit in the Metal Contest 2017 contest 6 months ago
• chienline posted an instructable Slophi Screwdriver Bit6 months ago
• chienline's entry DSLR Cowboy Holster is a winner in the PVC Contest 2017 contest 6 months ago
Winner!
• chienline commented on chienline's instructable Arduino Battery Voltage Indicator6 months ago

Yes you can. Use 3 identical value resistors as voltage divider. Then find the code :float voltage = sensorValue * (5.00 / 1023.00) * 2; //convert the value to a true voltage.and change it to :float voltage = sensorValue * (5.00 / 1023.00) * 3; //convert the value to a true voltage.Concentrate on wiring the A0 pin, it is next to the resistor which is connected to the Ground. See previous comments where I attach photo for the A0 wiring diagram using 24V battery ^^

• chienline's entry DSLR Cowboy Holster is a finalist in the PVC Contest 2017 contest 7 months ago
Finalist
• chienline commented on chienline's instructable Magnetic Hex Extension Keyring7 months ago

It is my intention using big keyring is because of its rigidity. Surely I have to sacrifice the strength of extension hex with such big hole, but drilling 3 mm (which I later enlarge to 3.5 mm) out of 6 mm the hex is still strong enough to be broken by your fingers in fixing light furniture at home. Put a small hole at the end of the extension has a better look as keychain, but I want to achieve the quick plug and play without having to remove the ring everytime I want to use it with Leatherman Tool.Thank you for your input anyway. Every idea will guide us to a better tool.

FYI : Leatherman does sell cool design of Bit Driver Extender at \$18, but no magnetic and no keyring ^^Take a look at their catalogue here : https://www.leatherman.com/bit-driver-extender-131.html?dwvar_131_color=40&cgid=#pr-header-back-to-top-link

Well, I think you can read minds, do you? I am thinking of modding one of the flats or phillips to be able to use for both because we can carry only one in our bit extender ;-)

• chienline commented on chienline's instructable Magnetic Hex Extension Keyring7 months ago

Thanks ;)

Thank you ^^