NPN transistor MMBT3904LT1G collector and base connected to diode pin of lm5066. The emitter is grounded. Board placed in a thermal chamber at -20degC. While reading the local temperature register 0x8Dh, we received data as 0xF0Ah. How to convert the data to negative temp. At room temp +25, data was received properly from LM5066 as 0x190h.
Thanks.
1 post - 1 participant
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1 post - 1 participant
I want to use a MOSFET as a switch driven by my microcomputer.
However I have two problems:
I know enough electronics to assume that using P-channel MOSFET, as shown on the right side, might solve both of my problems at one stroke. For GPIO=False=0V MOSFET will be fully open, while GPIO=True=3.3V puts -1.7V on the MOSFET gate and practically close it down. If that does not suffice, I could also put GPIO into the listening mode and therefore pull the MOSFET gate to 5V.
Could you please tell me if the idea will work? And what IRLZ44-equivalent P-channel MOSFET should I use?
2 posts - 2 participants
Hi
I was wondering aif anyone has created a Fritzing part for a Wemos Lolin32 OLED board that has an in-build OLED display as described in ESP32 Built-in OLED Board (Wemos Lolin32): Pinout, Libraries and OLED Control | Random Nerd Tutorials
I am pretty new on Fritzing and tried (and failed so far😒) to create a part that I will be able to use on a breadboard
1 post - 1 participant
does anyone have this fritzing part already the github Adafruit one is not the right screen it has ten pins. If not can someone make it? Thanks in advance for any assistance!
4 posts - 2 participants
Hi,
I need some help with creating a custom pcb layout. PhoenixContact is providing a .stp file and I’m not familiar enough in creating a .svg file for using it in fritzing.
The .stp file can be downloaded at:
pxc_2713777_00_ME-MAX-LP-SAMPLE-MSTBO-2-2_3D.stp
1 post - 1 participant
Hi, Request to pleae help if the attached schematic I have made will work correctly for the following purpose. Any improvement to minimize parts are most welcome. Also need help in simulating the project
If BLE Tag on pet collar is read by ESP 32 and if door is closed, the door will open. If door is open, it will close. If door is closing and beam is broken, door will open.
Download Project Automatic Pet Door
3 posts - 3 participants
Hello,
I was trying to create a simple circuit on a protoboard and Fritzing keeps lagging.
Core i5 11th
Mx450
16gb Ram.
I don’t think specs are the problem, right?
What may it be?
Thanks.
1 post - 1 participant
I am looking for binding post jacks. Pictures below. These are the connectors you find on multimeters. They are also sometimes called banana-plug jacks. They are perhaps the same as speaker jacks, but I don’t have first-hand experience.
I am looking for a top-down view, so basically it would just be two concentric circles, with a metallic color in the middle and the post’s color on the outside. There would also be a tap with a connection point. I’ve never made a part before, but if no one else out there has made one, then this may be a simple one to start with. However, it seems to me that I’m probably not the first person to need this part.
1 post - 1 participant
I recently realized that virtual notarization is now possible, and I’m interested in learning more about it because I can’t do my notarization in person. I’m intrigued about this one, despite the fact that the notary public services I’ve received from this organization have been outstanding and I’ve never had any complaints.
1 post - 1 participant
Is there a Fritzing part for an KY-032 INFRARED OBSTACLE AVOIDANCE SENSOR MODULE ? ? I have not been able to find one.
4 posts - 2 participants
what units are the coordinates in pcb svg files in?
i’m trying to create a part for the camdenboss ctb0108-8 terminal block. i’m using fritzing’s built in ctb0158-8 as a starting point (the 015x series are 90 deg blocks, the 010x series are 0 deg; same pin spacing; datasheet for both). all i really want to do is edit the silkscreen outline.
but i can’t make any sense of the units in the svg file. for example, here are 3 adjacent pins from fritzing’s svg (edited for brevity):
<circle id="connector1pin" ... cx="4.32" cy="22.32" .../>
<circle id="connector2pin" ... cx="4.32" cy="36.72" .../>
<circle id="connector3pin" ... cx="4.32" cy="51.12" .../>
each of those is 14.4 units apart in y. this part has 5.08 mm pitch:
now i noticed that the speed of sound in nitrogen at 26.25 C and atmospheric pressure is roughly 352.8 m / s. i also noticed that 5.08 mm / (352.8 m / s) = 14.4 microseconds.
so as far as i can tell – and please, correct me if i’m wrong – the units in fritzing’s pcb svg files are the number of microseconds it would take sound to travel the given distance in 26.25 C nitrogen gas. … i’m not sure if that’s a standard electrical engineering unit.
1 post - 1 participant
Hello, I am trying to build fritzing, but it keeps giving me this error. I don’t know much about qt so I don’t know exactly how to solve
grs@DESKTOP-E2L1S75:~/fritzing/fritzing-app$ make
make -f Makefile.Release
make[1]: Entering directory '/home/grs/fritzing/fritzing-app'
g++ -c -pipe -O3 -fno-omit-frame-pointer -O2 -Wall -W -D_REENTRANT -fPIC -DLINUX_64 -DDATADIR=\"/usr/share\" -DPKGDATADIR=\"/usr/share/fritzing\" -DGIT_VERSION=\"0.9.6-35-gf0af53a9\" -DGIT_DATE=\"2021-09-22T20:00:03+02:00\" -DBUILD_DATE=\"2021-11-23T16:53:20-03:00\" -DQT_NO_DEBUG -DQT_PRINTSUPPORT_LIB -DQT_SVG_LIB -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CONCURRENT_LIB -DQT_NETWORK_LIB -DQT_SERIALPORT_LIB -DQT_SQL_LIB -DQT_XML_LIB -DQT_CORE_LIB -I. -I/home/grs/fritzing/libgit2/include -I../boost_1_75_0 -Isrc/dialogs -isystem /usr/include/x86_64-linux-gnu/qt5 -isystem /usr/include/x86_64-linux-gnu/qt5/QtPrintSupport -isystem /usr/include/x86_64-linux-gnu/qt5/QtSvg -isystem /usr/include/x86_64-linux-gnu/qt5/QtWidgets -isystem /usr/include/x86_64-linux-gnu/qt5/QtGui -isystem /usr/include/x86_64-linux-gnu/qt5/QtConcurrent -isystem /usr/include/x86_64-linux-gnu/qt5/QtNetwork -isystem /usr/include/x86_64-linux-gnu/qt5/QtSerialPort -isystem /usr/include/x86_64-linux-gnu/qt5/QtSql -isystem /usr/include/x86_64-linux-gnu/qt5/QtXml -isystem /usr/include/x86_64-linux-gnu/qt5/QtCore -Irelease -isystem /usr/include/libdrm -I. -I/usr/lib/x86_64-linux-gnu/qt5/mkspecs/linux-g++ -o release/fapplication.o src/fapplication.cpp
src/fapplication.cpp: In member function ‘virtual void FServerThread::run()’:
src/fapplication.cpp:154:68: error: ‘Qt::SplitBehaviorFlags’ has not been declared
QStringList tokens = header.split(QRegExp("[ \r\n][ \r\n]*"), Qt::SplitBehaviorFlags::SkipEmptyParts);
^~~~~~~~~~~~~~~~~~
src/fapplication.cpp:170:51: error: ‘Qt::SplitBehaviorFlags’ has not been declared
QStringList params = tokens.at(1).split("/", Qt::SplitBehaviorFlags::SkipEmptyParts);
^~~~~~~~~~~~~~~~~~
Makefile.Release:3041: recipe for target 'release/fapplication.o' failed
make[1]: *** [release/fapplication.o] Error 1
make[1]: Leaving directory '/home/grs/fritzing/fritzing-app'
Makefile:40: recipe for target 'release' failed
make: *** [release] Error 2
4 posts - 2 participants
hi,
What I need is named Grove-electromagnet which belongs to seeed Studio.
But it doesnt exit in the “Parts”
Do anyone know how to find it or add it?
Thanks
1 post - 1 participant
i would like to select then move all of the parts, bend points, and vias contained in the dotted blue rectangle here:
how can i do this? i tried dragging a rectangle around them but then when i drag the selected items, it only moves the one i clicked on to start the drag.
thanks!!
1 post - 1 participant
Inductor detection method
(1) The manifestations of inductor damage: short circuit, open circuit, etc.
(2) Use a multimeter to judge the quality of the inductor.
The method of detecting the inductor with a pointer multimeter: first adjust the multimeter to the “R×1” gear of the ohm range, connect the two test leads to the two pins of the inductor, and a fixed resistance can be measured under normal circumstances. If the needle does not move, it means that the inductor is open. If the indicator of the needle tends to 0Ω, it means that there is a short circuit inside the inductor; then set the multimeter to the “R×10K” gear, check the insulation of the inductor, and measure the coil lead and iron The resistance between the core or the metal shield should be infinite, otherwise the inductor will have poor insulation; finally check the structure of the inductor. The winding of a good inductor should not be loose or deformed, and the terminal should be fixed firmly and magnetically. The core can be flexibly rotated without loosening, etc., otherwise the inductor may be damaged.
The method of digital multimeter to detect the inductor: set the range switch of the digital multimeter to the appropriate inductance gear; then connect the two pins of the inductor with two test leads to display the inductance of the inductor on the display. If the displayed inductance is close to the nominal inductance, it means that the inductor is normal; if the displayed inductance is much different from the nominal value, it means that the inductor is faulty.
(3) Generally damaged inductors should be replaced with inductors with nominal inductance and nominal current.
Learn more detailed information about the ways to detect the inductors on Easybom.
1 post - 1 participant
how to make a simple robot line follower and obstacle avoider without microcontroller
1 post - 1 participant
i noticed there’s a few parts, e.g. “hole” (pcb), that have an “advanced settings” section in the inspector where you can enter arbitrary values that affect the part.
can i provide advanced settings for my own custom parts?
for example, there is a huge range of terminal blocks, headers, and board-to-wire connectors that can be completely parameterized as:
(even more if row count + column count is included).
it gets pretty tedious having to define completely new parts when the pin layout isn’t available in some other part.
but this would also be useful for other parts besides connectors.
can i do this? like, i don’t know, have variables in the svg that are bound to fields in the inspector or something?
1 post - 1 participant
