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Hmmm, I've never experienced this. Maybe there is an issue with the memory on the Arduino?

Yes, when the LEDs are in parallel bridging only one is sufficient.

Yes, the TP4056 provides that.

Thanks for the tip. I had trouble melting the lead free solder in the first place. Once melted and mixed with lead based solder it is much easier to remove.

@TasteTheCode There is also a low melting point solder that, whenever melted into existing solder, will lower the overall melting point for easier removal without overheating other components.

Yes, in my case they do have a line of sight. If they do not, then it really comes down to environment and how hidden they are from each other. In those cases the range goes down to just several hundred meters but it needs to be tested.

Thank you! ♥

Thanks

Nice! I'm glad that I was able to help!

You must have the receiver on the dog in order to track it. Otherwise, there is no way to know where it is.

I don't know. Maybe. Any special requests?

@@TasteTheCode sure, please help for mq2 / mq5. The goals is utilize it for LPG / flammable gas detector. For now as I know so far, the community only output the sensor as gas percentage (%)

There are no rules when something will fail unfortunately...

No idea. I've never had to measure something that fast. The potential issue I see in using this one is the narrow beam it works at. The object will need to be passing at a very precise position in order to be able to detect it. May I ask what is moving that fast?

@@TasteTheCode Thank you! It´s a socccer ball. I need to evaluate the events at the worst possible scenario, that is a proffesionbal football player shooting at max speed

@@sebastrong Hmmm, that is an interesting challendge. My first thought comes with using some sort of beam that gets interrupted similar to how ballistic chronographs work. From the time difference between the breaks in the lights, you can work out the speed at which the ball traveled. Commercial products seem to be using a radar to track the ball.

Thank you! ♥️♥️♥️

The sensor is a bit dependant on the pressure you give it from the finger. It is best if it is strapped to it fo an equal pressure at all times. Additionally, you can take several readings and average them out to provide a more stable output.

Thanks for the nice comment and watching!

You are welcome!

You can use the 3.3k resistors that you already have. If it does not work, you have a mistake in your circuit. That small of a difference does not affect the function of the level shifter. You can use 3.3k and 300 Ohm in series to get the exact 3.6k but that won't make a difference at all if you have a mistake in the wiring!

14S471K

No, but I wish I could. It's way too far for me and economically not viable.

Yes, correct. I wanted to try the same but I ran out of time for the video.

@@TasteTheCode If the limit is 100 meters, then probably it stops sending a value, and shows some error message

You can't use 12V. The XIAO works on 5V only.

@@TasteTheCode We need to use 12v since our fan is 12v.

Do I need a separate power source in my xiao and fan?

I don't have it. The platform offers their own compiled firmware that you can download from the pulse.eco website.

Huh?!?

Thank you

You are welcome!

Yes you can. By default it works as a 4G modem on the computer and you can interact with it via serial.

@@TasteTheCode Thank you very much. I will try it with my own developed software with Qt. Greetings from Germany.

@@T.H.-ti7zz 👍👍👍 Let me know how it goes!

Thanks! That might be a good option. Thanks for sharing!

Do you have the board installed in the Arduino IDE? I recommend that you first follow the official guide for the board and trying out the Blink sketch before trying to install other things.

Is the XIAO BLE supposed to light up when it's connected to the pc? Because when I connect it to my pc, there's no light showing up. Maybe the CPU was damaged.

And because I connected it to a 12V supply. Will it damage the XIAO BLE?

The LED is controlled through code and it only lights up when instructed to. 12V is way too much voltage for it and it is most likely fried by it. The board operates from USB at a maximum of 5V when applied to the Vin pin.

And is it normal for XIAO BLE to get hot when you connect it to USB and PC?

Added to say, once you get the device to light, measuring the voltage drop across the LED tells you what voltage it is. After that, choose the right light temperature, 3000k 6000k etc.

Great info! Thanks!

You define your own placement. The only limitation that you have for the carrier board is that it must not have a ground plane underneath it. This is so that it does not interfere with the GPS signal.

Both the DHT11 and the relay module use 1 pin each and you can work them out from the code.

@@TasteTheCode I'm sorry but I don't get it. Can you make a circuit diagram instead?

@@jagiya2125 Sorry, I don't have the time. In the code you have all the pins named. So DHT is connected to pin D1 and relay is controlled by pin D2. D3 is the override switch. #define DHTPIN D1 #define DHTTYPE DHT22 DHT dht(DHTPIN, DHTTYPE); #define RELAYPIN D2 #define ONPIN D3 #define HYSTERESIS 2

Sorry, I can't measure it as I no longer have the iron. I gave it back once I repaired it.

I no longer have the boards connected but I'll try to use TTN for some of my next projects.

Yes it can. It's just a matter of config.

@@TasteTheCode I tried using AT commands but its not working

Can you be more specific? What's not working?

I haven't gotten to it yet but subscribe and I'll make a video.

Thanks! 👍

Thank you! Yes it was in the basement and I remember vividly when we once used it in 1994 so it must be older than that.

Thanks. Besides the sentimental value it has, it is still very useful and handy.

Check for broken wires. Otherwise it might be an issue with the amplifier circuit.

The only difference between the two is the microphone. I mention this in the video.

The sense's only difference is the presence of a microphone.

Because if I don't set the lower limit, it will just result in a freezing temperature. (Btw, I will be using this in a cooling system)

How to insert upper and lower temperature limit in the program code?

You still need just one. If the current temperature is higher than what set on the thermostat, you turn on the cooling, until it is reached. When the target temperature is reached, you will turn off the cooling. Adding a second temperature will just enable it to work up to a certain range and once the temperature is above that, the thermostat will never kick in.

@@TasteTheCode so what you mean is that, the thermostat will automatically off by itself if the set temperature is already achieved?

@@jagiya2125 That is the whole point of the thermostat, targeting a set temperature.

Well, you can see it working, right?

@@TasteTheCode I haven't test it yet on XIAO BLE. But the compilation is done already. Can I call it a success?

If it compiled, there is no reason why it should not work. Let me know how it goes and I'll be glad to help.

The battery might be gone. When a lithium battery is bad, it will often go undervoltage and the protection circuit will turn the device off.

Thanks, how can I help?

Yes, sure, it can be used with a lot of sensors.

Hey, sorry to hear that. I don't fully understand what you mean by vacuum test? If the MOSFETs are exploding, it means that you are trying to pull a lot more current through them than what they are rated for. Try going with much larger BMS, something like 100A.

No need to test it when you can see that it is bulged. If it looks ok, then you can test it as a second step. A good capacitor should never be bulged!