author
7Instructables8,645Views33CommentsJoined September 21st, 2018
Wile E. Coyote, passionate DIYer, wasn't as unlucky as you might think. If you try you will understand my statement: some of its contraption WERE ACTUALLY WORKING, at least at the beginning. It usually didn't end well, that's for sure, but still better than the average hobbyst! ^_^

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  • Electronic Component Tester (with a Nice Case)

    Mmm... I'll check my device, but it seems strange. The TP4056, at least in its most common module, has a 1K2 Rprog. Therefore it has 1000mA charging current, and therefore the green led should turn on as soon as the cell is at 4.2V and the current is less than 100mA. No green led means that the step-up is wasting more than 100mA with no load! This would mean that my battery would last less than 1 day even when not in use, and obviously that's not the case. If i'd were you i'd measure the TP4056 curren output and the stepup current output when the tester is off. Is your 18650 in good shape?

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  • Electronic Component Tester (with a Nice Case)

    Well, smart improvements!I have to say that a lot of people dislike the battery soldering task. Did you modify it because of this or because you, maybe, want to have replaceable battery?

    Well, smart improvements!I have to say that a lot of people dislike the battery soldering task. Did you modify it because of this or because you, maybe, want to have replaceable battery?

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  • garzo commented on garzo's instructable RC Plane: FPV & INAV on a Z-84 Wing16 days ago
    RC Plane: FPV & INAV on a Z-84 Wing

    I'll specify it in the -ible: 100€ is the price range for someone that's already in the hobby, not starting from zero. Otherwise you should add the price of a battery charger, several batteries, spare props, glue, wiring cables... Plus, really important, the transmitter. Lets pretend that you are a enthusiast hobbyist with a dozen planes or a noob hobbyist that simply has one or two planes. If you want to build this Z-84 you'll have to take near 100€ from your pocket. Just to be clear: this is an easy plane that could be enjoyed also from noob pilots, but it shouldn't be your first plane. Well, actually it could if you remove the FC stuff and the FPV gears. If it's your first plane you'd rather buy the PNP version and just have some practice.

    Hi simonster, unluckily the kit pages aim to an item code, which could change its price in time. Not to mention that you could have better price with this or that seller depending on the specific day, it could be discounted, etc. For instance, kit frame for only 25€ here (VS 36€ on BG) on hobbyking: https://hobbyking.com/en_us/wing-wing-z-84-epo-845...I've just made a survey on Bangood for [FC, GPS, ESC, RX, CAM, VTX, PROP, MOTOR] and the total is 87.5€. Adding the frame from HK is 103.5€. You have to do your search, every day is different, to find the better price. I guess that 103.5€ is at least in the ballpark. Wait, your'e right, it's € and not $, i'll edit.

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  • DIY Mini UPS for WiFi Router / Modem

    Assuming that you're using a TP4056 with the DW01A safety chip onboard, how does this react to 5V applied at its output? Shouldn't it assumes that's the cell is overvolted and blocks any charge attempt?

    Laptops don't have AC socket, they have AC-DC "power brick" therefore you'll only need a big DC power bank. You definitely can't use a TP4056 (or several ones), no matter of how much capacity can be provided by your cells (connected in parallel), you'll have no more than 5W (1.2A) at the TP4056 output. At first glance you'll need at least a "big" buck converter and a boost converter, a BMS (with cell balance feature) a couple of mosfets and several cells. That's not something that should be handled by everyone, lithium cells are not a joke.

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  • DIY Mini UPS for WiFi Router / Modem

    It's a nice idea with a clean explanation, unluckily the TP4056 can't (or, at least, shouldn't) be used this way. It's not meant to sustain at the same time battery charge and power output. The issue is the terminating current feedback, which won't be triggered in any case, and this could lend to a li-ion overcharge (with all the potential troubles that we know).You could use a protected cell, so you don't have to rely on the TP4056 safety circuit, but this isn't optimal because you aren't fully expoiting the TP4056 and the protected cells are more expensive.Also, the maximum output current on a standard TP4056 is 1.2A, so you'll have a power output in the 3-5W range depending on the battery charge level. It shouldn't withstand the power requirements of the router or a fast charging pho...

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    It's a nice idea with a clean explanation, unluckily the TP4056 can't (or, at least, shouldn't) be used this way. It's not meant to sustain at the same time battery charge and power output. The issue is the terminating current feedback, which won't be triggered in any case, and this could lend to a li-ion overcharge (with all the potential troubles that we know).You could use a protected cell, so you don't have to rely on the TP4056 safety circuit, but this isn't optimal because you aren't fully expoiting the TP4056 and the protected cells are more expensive.Also, the maximum output current on a standard TP4056 is 1.2A, so you'll have a power output in the 3-5W range depending on the battery charge level. It shouldn't withstand the power requirements of the router or a fast charging phone, especially if you consider also the DC-DC converter efficiency. In the end it "could" work, i can consider this solution for something not critical in the garden, but i wouldn't use it in my house in case flammable materials are near.

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  • garzo's instructable RC Plane: FPV & INAV on a Z-84 Wing's weekly stats: 8 weeks ago
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  • garzo commented on Jasonking1's instructable How to Drive Stick Shift3 months ago
    How to Drive Stick Shift

    If you "brake" with gears and then use the parking brake the last one will be only a backup. Anyway, a proper maintened brake have to do its job without an absurd pulling force.

    In some states it's even illegal to drive with slippers, i don't know the rules at your place but it's odd to do an instructable doing something very related to the main topic that's at least not recommended because dangerous. You should at least mention that in the introduction. Anyway: nice car! :)

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  • garzo's instructable DIY Portable Variable Power Supply's weekly stats: 3 months ago
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  • DIY Spot Welder From Microwave - Now With OLED Display!

    Maybe it's quite late for an answer but yes, the timer can't be regulated in smaller step than the 20mS for 50Hz and 16.7mS for 60Hz (check your numbers). Anyway i don't feel this a an issue. Can't answer question nr. 2.

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  • garzo commented on BakkerJo's forum topic "Open Link in New Tab" Issues3 months ago

    Found this topic searching solutions for the same exact issue. It happenes also in my ible, tried whatever tricks came to my mind but i haven't find a solution so far.

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  • garzo's instructable Electronic Component Tester (with a Nice Case)'s weekly stats: 3 months ago
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  • Convert Your Old Laptop Battery Into a Power Bank

    It can, but the current will be limited by the TP4056. With FULLY CHARGED BATTERIES you will have no more than 400mA @ 12V. When the cells are about to be empty you will only have less than 250mA. Not enough for a bluetooth speaker in any case...

    If you are using more than one cell in parallel you shouldn't have any current limit from the cells, then it should be the TP4056 with its 1.2A of maximum output current. 1.2A @ 3V should be converted in 0.72A @ 5V, but you have to take into the equation the efficiency of the dc converter. Afaik with these components you can't increase the output current...

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  • garzo commented on garzo's instructable Electronic Component Tester (with a Nice Case)3 months ago
    Electronic Component Tester (with a Nice Case)

    It is! I've finally sorted a full tray of reclaimed yet undefined components. The best part is that since they are "free" components i won't mind to use them "electroboom style". :D

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  • garzo commented on garzo's instructable Electronic Component Tester (with a Nice Case)3 months ago
    Electronic Component Tester (with a Nice Case)

    While a lcd backlight is comfortable i agree that's not mandatory.The issue that i'm really uncertain of is how the tester will perform with a modified power supply. Even though the microcontroller might "work" at 3V3, are you sure that he can handle also a discharging 18650? With the TP4056 we are talking about 2.5V limit. Even if it doesn't reset or power off are the analog readings accurate and reliable?If the Vcc is not 5V as expected it could provide wrong measures with the ADC, therefore you really should have a stable and regulated 5V Vcc. In order to have this 5V regulated reference voltage you need a 7805. As per the 7805 data sheet, whichever package and/or version, you have a rated minimum input voltage of 7V. https://www.sparkfun.com/datasheets/Components/LM7...Th...

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    While a lcd backlight is comfortable i agree that's not mandatory.The issue that i'm really uncertain of is how the tester will perform with a modified power supply. Even though the microcontroller might "work" at 3V3, are you sure that he can handle also a discharging 18650? With the TP4056 we are talking about 2.5V limit. Even if it doesn't reset or power off are the analog readings accurate and reliable?If the Vcc is not 5V as expected it could provide wrong measures with the ADC, therefore you really should have a stable and regulated 5V Vcc. In order to have this 5V regulated reference voltage you need a 7805. As per the 7805 data sheet, whichever package and/or version, you have a rated minimum input voltage of 7V. https://www.sparkfun.com/datasheets/Components/LM7...The only option i can see to remove the step-up is to use two 18650, but you have to find a 2 cell alternative for the TP4056, and you can't use the full cells capacity because under 3.5V per cell is the rated limit for the 7805. Can it work with less that 7V? Maybe, but maybe it depends on the specific specimen and that's not true for everyone.IMHO you should follow the instructable as it is since your objection is not correct under every aspect.

    Because the TP4056 output is the 18650 cell voltage and it's significantly lower than the standard input tension of the tester module, it can reach 3V . I've tried to gradually reduce the voltage with my variabile power supply and the module "could" work at 6V but the LCD contrast is quite low and i can't guarantee that identification script will work as it was supposed to do.

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  • garzo commented on garzo's instructable Electronic Component Tester (with a Nice Case)3 months ago
    Electronic Component Tester (with a Nice Case)

    I probably should add more info about how it works, but in the end it's really easy to use. You have several holes in the cyan spring connector but actually only three at time are important, the other ones are just other "copy" of the same pin. The first top-left three, for example, are connected to "probes" nr 1, 2 and 3. You only have to place a component with its legs in these slot, block it with the lever and press the button. The tester will analyze it and it will show on the screen the component type and the main specs. That's all. You don't have to use a specific pin for -just an example- the gate pin of a mosfet, you just randomly put its legs in the spring connector and push the only button. This tester can identify NPN and PNP transistors, N-channel and P-c...

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    I probably should add more info about how it works, but in the end it's really easy to use. You have several holes in the cyan spring connector but actually only three at time are important, the other ones are just other "copy" of the same pin. The first top-left three, for example, are connected to "probes" nr 1, 2 and 3. You only have to place a component with its legs in these slot, block it with the lever and press the button. The tester will analyze it and it will show on the screen the component type and the main specs. That's all. You don't have to use a specific pin for -just an example- the gate pin of a mosfet, you just randomly put its legs in the spring connector and push the only button. This tester can identify NPN and PNP transistors, N-channel and P-channel MOSFETs, diodes (including dual diodes), thyristors, triodes, resistors, and capacitors. If your component is something else it won't tell you anything but "faulty part".

    From the producer's page: This tester can identify NPN and PNP transistors, N-channel and P-channel MOSFETs, diodes (including dual diodes), thyristors, triodes, resistors, and capacitors. I've tried it with transistors, mosfets (N and P), dual diodes and capacitors so far, but i'm confident that it will work with all the listed components.

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  • garzo commented on Gene'sG's instructable Spin Bike RC Motor Pedal Generator4 months ago
    Spin Bike RC Motor Pedal Generator

    Then connect a battery charger! Since it's not clear which kind of battery you have to recharge you could add a smart battery charger like this one (https://www.banggood.com/custlink/3KDKK1SRjA) and as long as you can keep an input voltage between 11 and 18V it will charge any battery. If i were in the process of build something like that i would add a bunch of capacitor and a voltage regulator (step down) before the battery charger. (https://www.banggood.com/custlink/KmDGRCFRR0 and https://www.banggood.com/custlink/Km3mK1Ivbw) Trim the step down module to provide 12V and connect it's output to the smart charger. Connect the two caps in parallel and connect them (respecting polarity) to the step down input and to the rectifier bridge output. That's all...

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  • 3D Printed Air Purifier -- Get Rid of ABS Smell and VOC's

    To everyone that suggests to have a sealed chamber to minimize the chance of air polluting: you don't actually have to have a sealed chamber. At the opposite, you should have some (small) air entrance, otherwise the filter fan can't properly work. As long as the fan can produce some underpression in the chamber no pollutant will exit (except from the filter, but that's a filter fault) because it's the clean air that will enter the chamber, not the polluted air that will exit.

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  • garzo commented on Open Green Energy's instructable DIY Professional 18650 Battery Pack4 months ago
    DIY Professional 18650 Battery Pack

    As long as your pack is rated for more than "6C" discharge rate you should have enough power. 4Ah is a really high capacity for a single cell, therefore it's probable that you will have at least a xS2P pack. If a single cell can provide at least 12Amps you can use them. Unluckily there's no way to know that without knowing which kind of cell you do have.

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  • garzo commented on Amit_Jain's instructable LIR2032 Charger5 months ago
    LIR2032 Charger

    Not every li-ion cell is rechargeable, how did you check that your 2032 are rechargeable?

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  • Sending Data From Arduino to Excel (and Plotting It)

    Do you know that you can change the COM number of your device in the control panel? Also the baudrate can be changed.

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