Thanks for the explanations, as usual everything is clear. Maybe introduce W3230 Mini Digital Temperature Controller 12v/24v/110-220v Regulator with thermostat Heating Cooling Control Thermoregulator. We want to introduce a switch to dim the LEDs because they are an eyesore, only to turn them on when I need them. Thank you in advance❤
Thanks! Being able to switch those bright LEDs off when not needed sounds like an useful modification. Unfortunately, based on the pictures I've seen, there isn't an easy way of adding such switch to that board.
Great video - thanks!! Do you know if there are any "input list" for the UUID's rather than putting them in the code? For adding more keys/gards with less effort?
Thanks for sharing can you help me to make circuit schematics and code I want to read voltage with an isolated ground Mine setup is 4x 12v battery with 4x solar controllers with 1x Esp32 and 2x ADS1115
Always hyvää juttu to see a suomalainen on "the web" I was melkein suomalainen, after 7+ years living Salossa ... nyt saksassa, se ei ole niin ystävällinen kuin Suomi... Moikka! from a 🇨🇦🐻 in 🇩🇪
sacrificing a latching relay and an entire micro controller for a functionality that trivial is pretty wasteful , especially when there is already a tp4056 circuits that have the exact type of protection you want built in.
Latching relay is fairly new component in my parts bin and I was exited to use them in new circuits. Using microcontroller to switch off it's own power using latching relay may sound silly, but it's actually a decent way to implement this safety feature. Many laptops have features similar to this "storage mode": A small switch somewhere near the battery, pressing it disconnects the battery until the charger is connected... Made especially for disconnecting the power before taking the laptop apart.
can you make versoin for noobs please? I have pretty cheap microphone which sounds not bad, but it's silent. I always must to boost gain in every program which causes a lot of noise on recordings. Please help, it's maono au-a04
Super cool project! Just a quick clarification, how to you set the maximum current rating? For example, I need a bms that can do 30a continuous, I need to lower the r3 value, correct?
Thanks! Max current is set by selecting different mosfets. The combined ON-state resistance of the two mosfets is used as a shunt resistor, the IC monitors the voltage drop over those mosfets. For example HY2120-CB has discharge overcurrent detection voltage of 200mV. Using R = U/I formula, we can calculate required resistance of two mosfets in series when specific I is selected: R = 200mV / 30A = 6.6666mOhm. That is combined ON-state resistance of two mosfets, so mosfet with 3.3333mOhm ON-state resistance should be selected to achieve required 30A maximum discharge current. That's quite low value and such mosfet would probably be unnecessarily expensive. I haven't made this kind of BMS circut with any higher current rating than 10A shown in this video. I suggest researching if multiple mosfets can be used in parallel with these protection ICs, or if there is a better IC for higher currents.
I didn't even think about it when I was ordering these, but I should have selected some other colors to make filming these little bit easier. I did my best to rotate the parts and use different angles, to showcase the details as well as I could.
Very reasonable way how to reverse engineer unknown circuits. Although by following your tutorial directly we will have problems if PCB that somebody want to reverse enginner, must remain intact. Currently I have 6x1S LiPo/LiHV battery charger for repair thar I can't destroy in such way because can't damage the PCB. But I'll try to draw circuit from board photo anyway.
Can you make a detail and noob friendly tutorial? I see a lot of people mentioning EEPROM mods, but I can't really find any instructions other beside the UT210E.
A fun and well done project. Bravo. Occasionally, you will also find a phone system controller box, at the thrift stores, as well. I forget the proper name for the device, but its functions were things like adding a "hold" line, directing a call to a particular extension, tying in the on-hold music system, etc. I wonder, if one of these boxes might be helpful?
Thanks! That sounds interesting device. Imagine having an intercom system at home (like Thomas Burns made in one of his videos) and being able to play on-hold music to the other person!
Disculpa pero esta mal tu circuito, el transformador debería ser de 600 Ω 1x1 = 600X600 Ω para acondicional la impedancia. Cualquier impedancia o capacitancia diferente el proveedor te retiene la linea.
Thank you for the feedback. I would agree with that, if we were connecting something to an actual landline / phone line that goes out to the exchange. But I don't know if ringer circuits should be used in that situation. Anyway, this circuit is used with phone that IS NOT connected to anything, other than this circuit... An isolated system. I should have mentioned that more clearly in the video.
Schematic is seen at 4:45. Based on simulation and my limited real world testing, this should work fine. If anyone thinks otherwise, please leave a comment! I was able to find project descriptions where people have made the phone ring OR read the hook, but not a single one that does both without modifying the phone's internals.
Short answer: 220uF capacitor didn't limit bass with any of my headphones. Longer explanation: Adding the capacitor in series forms a high pass filter with the headphones. Depending on capacitor value and headphone impedance, this may or may not affect the lower end of the audio. Headphone impedance and capacitor value can be used to calculate high pass filter corner frequency using following calculator. Alternatively one can check what capacitor value is needed for desired corner frequency with specific headphone impedance (type two values, empty one will be calculated): www.muzique.com/schem/filter.htm
Hi! Classic mix-up of lowercase L and uppercase i. First letter is lowercase L. The "lpadmin" group is created when CUPS is installed, which I confirmed to still be true by testing it on my PC running Ubuntu. I hope this solves your problem. Cheers!
WHAT IS THE REASON I COULD NOT MEASURE THE OSCILLATOR IN Hz STAGE WITH UT139C MODEL MULTIMETER? UT61C MODEL CAN READ 32.768 FREQUENCY VALUES. IS IT POSSIBLE TO MEASURE Tuning-fork crystal used in a modern quartz watch WITH UT139C?
Crystal circuits are quite sensitive and for some reason (which I'm not able to detect from the user manuals) UT139C loads the circuit differently and prevents crystal from running. That is my guess.
WHAT IS THE REASON I COULD NOT MEASURE THE OSCILLATOR IN Hz STAGE WITH UT139C MODEL MULTIMETER? UT61C MODEL CAN READ 32.768 FREQUENCY VALUES. IS IT POSSIBLE TO MEASURE Tuning-fork crystal used in a modern quartz watch WITH UT139C?
Crystal circuits are quite sensitive and for some reason (which I'm not able to detect from the user manuals) UT139C loads the circuit differently and prevents crystal from running. That is my guess.
After testing this for a while now, I think you are right. I will soon assemble a PCB with some layout changes and fixes, at the same time I'll make double sealing default in vacuum+seal -function. Seal only -function will probably be kept the same, because I often use it to seal thinner bags which melt too much with double sealing. Thanks for the feedback!