Let's take a look at another Temu product. Now some of you think it may be pronounced teu I say Temu because that is how that combination letters would be pronounced in Queen's English as in temperature, temperamental, even tempura which is Japanese Anyway, these are little USB lights and recently Teu got in touch and said would you like to be a show for our products and no I wouldn't even though they offered to put a huge amount of credit into an account and have me do lots of reviews of the products and glorious things. No, because fundamentally, Temo I'm looking for Craft products and these fit that description and the videos I make are not going to be jolly and cheery. Although I will say that Temu have been disappointing in not providing dangerous enough products for this.

Channel all the products been safe. It's quite frustrating. TAMU I Want more dangerous products Anyway, we have a set of little lights here and these were described as five pieces USB small NightLight mini creative portable soft light Eye Care LED small round light available for student dmetry children's bed sight light USB plug-in and I chose the five piece option with the multi color and it actually says in this picture it says one of each color but it lists seven colors here. but I got five colors: red, green, blue, cold white, and warm white and when they arrived I plugged in the worm white which looks quite nice and it was a reasonable intensity and it came up at 54 milliamps and I thought that's quite a lot if it's just the usual 2 LED system, which coincidentally it is two LEDs but strangely invisible resistors.

This is important I put the dots in these for the color identification and then the next one I picked up and plugged in was the green one and OMG it's like 190 milliamps in climing. It's about 200 milliamps and you think really, does it have lots more LEDs inside? No, it's still just got two standard LEDs inside and I was wondering why is that? Well, it turns out initially I thought there were no resistors at all. It turns out there are resistors, but they've been implemented in a specifically interesting way. I've got some other data for the other colors here, but initially I shall show you the circuit board.

My apologies of my voice is croaky I'm just under the weather moment and it's been Croy for a while. So here's a circuit board. We have the the four uh active pins of the USB connector. We got two data pins are not connected.

We get the negative here and we get the positive here. The positive does two things: It goes to one end of a Uh printed resistor and it goes to one end of LED. At the other end, the negative goes to the end of a printed resistor and then it goes to the other LED And these resistors are actually virtually invisible because they're actually under the layer they've been printed in the copper. and then the Uh solder resistance has been put over the top, basically hiding the resistors.

But generally speaking, printed resistors are fairly accurate because it's a very specific era. it's a very specific thickness screen printed on, and it's a very specific carbon density that does not apply in this instance at all. Let me show you the data and the schematic. It's not very complex schematic, but it is nonetheless a schematic.

We have the USB connection we got plus 5 volts and the Z vol. We've got an LED and then a resistor, a printed resistor, and then a printed resistor and then the LED for the red. The resistance of the two resistors was 22 ohms and 25 ohms, and the current through the LEDs was uh, 150 milliamps total. So about, well, roughly 75 milliamps each, but it's not quite as uh, well divided as that.

The green was horrific, it was 220 milliamps when it had stabilized, and the two resistors were roughly equal at 15 ohms, the blue roughly 156 ohms, 28 mamps, the cold white 18 ohms and 20 ohms 168 milliamps, and then the warm white was the odd one out with higher values, but really random 56 ohm and 75 ohm at 57 milliamps. So basically speaking, they've printed these carbon conductive ink resistors as part of the manufacturing process, when in reality it wouldn't have really been that hard just to place a resistor a surface mount resistor, but this is obviously cheaper because it's just basically it's a screen pinted process. but uh, in this instance, they've uh, not really kept tabs on the density of carbon in their uh compound. or perhaps it's the screen printing has just been very random in the density they put down.

However, I suppose there is a way you could Salvage this situation if you wanted to get some of these well apart from getting a custom circuit board made and actually putting in which would work work. it appears that the uh, the connector is shoved through and it looks as though the circuit board is then solded in situation with those two endpins that holds it in, uh, in position. but you could theoretically just scrub that off and put a resistor across a surface mount resistor or even a through hole resistor. But to be honest, the way it's designed, it would be better just getting a custom circuit board made.

but then again, they were dark cheap anyway, so maybe just use them until the LED is neita fry except for the worm white which is running out reasonable level. uh um. but really, it could be the basis if you're looking for a custom project for a little enclosure with a USB connection. a little bit of your own circuitry.

That's what these could be good for, but as lights they're a bit random. They're very unpredictable.