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Howdy! Came across you video a week or so back and have watched it a few times. Love the simplicity of the project. My problem is I am trying to build something similiar, but need it to detect a ferous object 3 ft to 6 feet away. How would I megasize this to work. Thanks!

Very great video, thanks a lot !!

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This is a great overview, thanks! Yet more evidence for me that the standard way to use velostat is sandwiched between conductors, and not used to bridge across two conductors like the first example I saw. Also, I'm curious, do piezo sensors detect force, or do they detect percussion? My understanding is that they don't work very consistently to measure static force. Is that right?

Rubbing alcohol and an old tooth brush will take that old flux off easy

Where I can get the Driver for the device?

is you input ac?

For this setup, should I use the PPM or PWM Output mode?

This is great! Thanks for sharing! What would be the approach if I'm looking to leverage the pwm of an arduino and a high side n-channel mosfet to control 12V LEDs? Should I build a mosfet driver?

Great video btw what is the range for this thing? Hehehe

using this convertor- 1st device is ethernet- take to USR unit- then to RS485 wiring to another RS485 connected to another USR unit far away , then back to ethernet connection to allow comm. between the two devices ? thanks John

How can these data be sent via mqtt?

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Very good, Ken.

Great tip of the day. Thanks

Can you explain the button debounce on the data sheet?

Another great circuit to bookmark... Thanks. Needed something simple like that a few years ago.

What a awesome little project! Just in time, I'm working on my DIY lawnmower and this will detect low battery power! Thnxs for sharing!

Thank you, Im learning how to use batteries in project, and those Li-ion scares the shit out of me since the BMS I bought from amazon seems to do nothing

Wow, what a useful IC. And easy to implement.

Useful tip, thanks!

Thank you for this video. I could use your help. I want to charge batteries with my Siglent PSU. I need the charge cycle to stop, when the current drops to 200mA. I can do this in the PSU's software, but I am not much of a coder. So, I am needing an adjustable low current shut off circuit. Thank you for your consideration of it. Using an Attiny85 and a sense resistor might work?

I vaguely remember a chip named MAX809 that worked in a similar way, I will have to investigate. Thank you for another helpful tip.

Whats the pot in the upper left corner for?

Hello, very interesting video, but i question here, how did you build the Encoding matrix (EC,D3,BA,75), i can understand that the decoding matrix is composed by this encoding matrix and the identity matrix, but, how can we create the encoding matrix?Thanks!!!!

Be aware, that the circuit will not work with any PWM or several Khz signal. This works only for very low frequencies from Arduino. To get the same effect, you need to use a boost converter to give double as much voltages to the gate which let the MOSFET to switch ON totally.

Thank you for the information, so the MD-PS002 sensor is not suitable for use as a TPMS? I'm working on my final project and plan to use this sensor because it's low cost, but do you have any suggestions for other pressure sensors that can be applied to TPMS besides MD-PS002 and MPX?

More people should appreciate this.

ah, at last, Someone making sense from the 2- vs. 3-pin electret-condenser mic capsule choice decision-making process. it isn't the FET that is inside or not, but the resistor? But where is the resistor in the 3-pin? for current-limiting, is it? Thank You Maestro!

Problem 3-13 in "Electromagnetic Fields and Waves" (2nd edition) by Lorrain & Corson deals with a microphone having an electret diaphragm. (The 3rd ed. has a completely different layout.)

Very well explained thankyou :)

I must admit, it´s the first time I understand a bit of how bootstraping works, still I have 2-3 questions, and hope that any commenters/viewers are gonna explain a bit to me: 6:50 1: "the transistor will be on, so, its collector will be at ground, thus grounding any voltage to the gate of the Mosfet..." Does the gate need 24V to open (cause 24-12=12V are needed after all?), so, 12V going through the IN4148-diode, the 10K- and the 1K-resistor (while at the same time anyway connected to ground), surely isn´t enough to trigger the gate ??? The question may sound as being self-answering, but such stuff isn´t clear to me at all (that´s what you get, when learning electronics at YT ;-) 7:25 2: "so, the voltage of the load is gonna increase. and as it´s increasing, the voltage at the diode/cap-midpoint is gonna increase at the same rate..." I know caps unload their charge in milliseconds, so, more than a single cap-charge/cycle is demanded for it to work? Or is the gate-current-demand so low, that a single cap-charge per cycle is sufficient??? I mean, how long can the 24v be sustained, since the cap unloads quickly (in few ms), if the cap isn´t supposedly charged several times in a single cycle, thus keeping its 12v-charge-level constant??? Also 7:25 3: What is meant by "the voltage at the diode/cap-midpoint is gonna increase at the same rate (as by the load)", is the voltage at the diode/cap-midpoint the sum of the "battery"-voltage rushing-in, and being added to the 12v of the cap? In other words: diode/cap-midpoint has 12v from the cap plus 0v from the battery at the beggining, and as soon as battery-current rushes-in, you get 12v + "X"v, "X" growing at the same rate it grows at the load (as is apparent/logical), till you reach 24v??? Or does some other wizardry happen, that I didn´t get yet??? Thanks á priori for all answers !!!

Did you try opening the padlock a second time to show that it wasn't a fluke?

Last chance: Fair Radio Sales is closing 3rd week of June 2024. 8 stage ring counter 16 step sinewave generator kit. HC14 oscillator, four divide by 10 wired or (HC393), HC164 serial to parallel ring counter and resistors. ...circuit board and IC's - no switches etc ASC-583 ~$5 If you want to build 16 step, here are the 1% resistor values for HC164: Q1 3.92k Q2 2.15k Q3 1.62k Q4 1.5k Q5 1.62k Q6 2.15k Q7 3.92k Q8 open - connected back around to input

That's very good, Ken. Brilliant.

Brilliant video! Simply elegant without a BS world! 👍👍 I wish we have more UA-cam videos like yours

This is such an information rich video and yet so short. I really appreciate you making this kind of content. Thank you!

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Ha, Ha ! I knew you were MacGyver masquerading as a UA-camr.

(INSERT BOEING JOKE HERE)

Aircraft Gyroscopes require warmth and freedom of NVH "vibration"....✈RC

Superb ! I think makers of the "The invisible man" movie, missed a golden opportunity to have him undo nuts on equipment in the laboratory !!

👍👍

Why nature is against us?

Interesting... With variable speed on thew DC Motor could you have found a resonance frequency to lower the nut on the threaded rod ?

Awesome music!

I once had a single-cylinder motorcycle without a balancer shaft. That was exactly how it was. ;-) What's the music? Very nice.

You have the BEST video for this task on the Internet, especially your solution for the "Timing Problem" by using cut and paste!!! I have struggled for more than two days to program my HC-06 and your video made my day!! Without it, I don't think I would notice and solve this problem on my own. Thank you!

i just got mine and did short r19 ... tried to plug it but no led comes on... is it cause of the mode or is it faulty cause i cant make it work too