31 Threads found on edaboard.com: cr2032
I am curious,
Why can't you build the part using Altium?? I believe version 6.8 and later has an integrated IPC footprint wizard that works really well. If you have the datasheet for cr2032 you can build part and be confident you are not violating IPC constraints.
Granted IPC wizard does not have a selection for Battery holder but you should
PCB Routing Schematic Layout software and Simulation :: 05.03.2010 10:54 :: edaedaeda :: Replies: 3 :: Views: 3618
The original test circuit checks and latches a dropout condition on 12V only. The suggested one does not. If you want a cheap and dirty solution, charge the 3V cell with the 5V pin using 10~20mA max current with an LED indicator for current. 3V Coin cell is maybe ok within 10% or 2.7~3.3 and n.g. outside that. so use 5V source on Molex, with AlGa
Hobby Circuits and Small Projects Problems :: 27.04.2012 12:28 :: SunnySkyguy :: Replies: 24 :: Views: 1592
You can run a small high brightness LED like that at about 2mA for a long time, maybe 10 hours or more before the battery gives out. If all you need is a few seconds it should last a long time.
Consider that most "keyring" LED lights use nothing more than a cr2032 and a white LED straight across it. They actually rely on the cell not being able to
Analog Circuit Design :: 25.08.2012 16:07 :: betwixt :: Replies: 6 :: Views: 487
Looks like 3.3V requirement of the module is just an unfounded guess. Some of the linked documents say the module is good 1.9 to 3.6, like the chip itself. cr2032 is also explicitely mentioned as a possible supply.
Microcontrollers :: 06.05.2013 11:27 :: FvM :: Replies: 22 :: Views: 719
Is it safe to Direct solder a standard cr2032 3V lithium cell without any special equipment, What happen to the internal Chemical formation. Otherwise if its posibble what is the maximum temprecture it can be worked.
They can certainly burst if heated to a high temperature. Using an ample of flux and perf
Microcontrollers :: 05.08.2013 03:49 :: bigdogguru :: Replies: 3 :: Views: 234
charge a 3v lithium coin cell (like cr2032) ???
I dont think that you can charge a standard Litiumcell .
Danger of explosion if recharging is attempted !!!
Professional Hardware and Electronics Design :: 06.07.2003 02:26 :: dainis :: Replies: 14 :: Views: 7847
I have a portable design which use 2x16 LCD. The whole boards required 50mA. Initially I use 2 cr2032 in palleral to supply 3 V to the board. However, the LCD starts flickering.
I use bench supply to develop the system and I didn't notice the problem. Only after I switch the design to battery supply, the board doesnt work.
Analog Circuit Design :: 15.11.2005 00:00 :: janet_smith2000 :: Replies: 3 :: Views: 652
You may use cr2032 battery in combination with two diodes and 100nF capacitor. This will provide your RTC keep counting for a long time after you swith off power. Just put baterry instead 470uF cap with diode in row and thats it.
Microcontrollers :: 24.09.2006 11:01 :: predrage :: Replies: 1 :: Views: 778
I'd like to connect 5V standard LCD module with 3V3 MCU and i'd like to use a single cr2032 battery. What is the simplest way to do this ?
Electronic Elementary Questions :: 03.10.2006 09:07 :: tgq :: Replies: 0 :: Views: 569
I have a question: I'm development a product that use a battery (cr2032) and this has a RTC(real time clock). This is all implemented on PIC18LF2455. When my device is connected to USB it works at the USB voltage (5V) and the application software run at 48MHz. But when disconnected it works with the 32768Hz crystal, that is the source for TMR1 and
Professional Hardware and Electronics Design :: 25.10.2006 17:08 :: leomecma :: Replies: 1 :: Views: 1006
I'm making a system with main power and a 3V battery (some like cr2032) through a diode for RTC keeping time. Then I want to monitor the charge of battery to light a led when the battery is close to the end of its life to inform the need of change it. How can I monitor the charge? I have a PIC microcontroller (with AD peripheral, comparator,
Microcontrollers :: 12.12.2006 06:05 :: togarha :: Replies: 3 :: Views: 1078
I have seen Yo-Yo with LEDs which is pretty simple to make. It has a switch made out of long and heavy metal strip which makes contact due to centrifugal force when Yo-Yo is spinning. Rest everything is easy....just connect cr2032 coin battery with LED in series with this switch.
Electromagnetic Design and Simulation :: 09.07.2007 08:20 :: CMOS :: Replies: 6 :: Views: 1136
So a 91R or 100R would be the value to use.
Apologies I should have figured nobody would take my OP as correct. Series resistors are NOT required because cr2032 Maximum pulse discharge current: 15 mA. So effectively, you have a series resistor in the battery.
Microcontrollers :: 22.12.2009 21:58 :: AlGeorge :: Replies: 5 :: Views: 1865
There are a lot of projects like this one.
Lamps I already had. Frame construction is not perfect, I’m not good in this. I’m thinking how to make it better.
Power 9-12V ( current collection
Show DIY :: 10.02.2010 09:01 :: gres :: Replies: 0 :: Views: 1203
Clock consist 4 lamps with standard functions of showing time. It is set on board about 13x8cm. Power by single voltage 8-15V. with 12V it needs 350mA.
I put a few Unconventional solutions:
- pulse generator. This yellow ball a
Show DIY :: 29.03.2010 16:21 :: gres :: Replies: 1 :: Views: 1610
Does anyone have a PCB footprint for Standard SD/MMC Card Socket/Connector (PUSH-PULL) or (PUSH-PUSH) type, for Proteus ARES?
I can simulate SD/MMC Card with Proteus MMC library (VSM DLL Model) but unable to finish my PCB design as it does not have a PCB footprint.
Can anyone help me PLEASE!!! I need it urgently and couldn't fi
PCB Routing Schematic Layout software and Simulation :: 29.05.2011 14:00 :: tekexpert :: Replies: 0 :: Views: 3077
The heart of this simple device is Atmega48V. This version is perfect for the watch, because it works with tension starting from 1,8V.
RTC PCF8563 is responsible for telling the time.
In order to display the time,
Show DIY :: 10.08.2011 13:24 :: Vermes :: Replies: 0 :: Views: 916
This device is based on Attiny13 and it's powered from cr2032. Two PWM canals were used for steering two LED diodes simulation skewing the flame. The device has a twilight sensor switching off the device on dawn, and switching on
Show DIY :: 04.09.2011 13:41 :: Vermes :: Replies: 0 :: Views: 808
This device presents time and date on a VGA monitor (without a PC).
What was used: AVR Atmega16 and Philips RTC PCF8583
The circuit is very easy and consists of elements:
power supply 5V - LM7805
Show DIY :: 04.09.2011 14:07 :: Vermes :: Replies: 0 :: Views: 2150
It is a tube clock on IW-11 lamps. The lamps are quite big and cheap, a character has more than 2cm in height.
The clock is made on microcontroller Attiny2313. Also DS1307 with quartz and ba
Show DIY :: 26.10.2011 15:46 :: Vermes :: Replies: 0 :: Views: 1036
It was intended to be a simple and small device. Initially, the whole had to fit in the old Game Boy, but the Y-shaped screws were the obstacles. Dreamcast memory card is much smaller but sufficient for this purpose.
Show DIY :: 24.01.2012 17:10 :: Vermes :: Replies: 0 :: Views: 513
It is a household thermometer connected to the plasma TV (with a PC-VGA input). The system monitors the temperature in the living room, garage and outside on both sides of the house. LCD monitor used in this project
Show DIY :: 20.02.2012 11:52 :: Vermes :: Replies: 0 :: Views: 1192
of this home made clock with alarm and time backup after supply failure (cr2032 battery) was written in Bascom. It has three buttons for setting the time and alarm.
Functions of the buttons:
start of operation of the clock after the first connecti
Show DIY :: 25.04.2012 18:34 :: Vermes :: Replies: 0 :: Views: 1291
how many LEDs and what size? 5mm take 20mA and can range up to 40,000 millicandela
We need to know the load. But for cost, it's hard to beat CR2016's for price and size.
Lithium-manganese dioxide Lithium-carbon monofluoride
IEC name cr2032
ANSI/NEDA name 5004LC
Electronic Elementary Questions :: 23.06.2012 20:37 :: SunnySkyguy :: Replies: 3 :: Views: 302
Could someone recommend a small-sized battery 3V battery that could sustain 15mA current for several seconds?
Our application requires two RF end device to occasionally establish some connection, so that when A is transmitting, B needs to be in receiving mode. Although A?s transmission could be in brief pulses so that is would work with a
RF, Microwave, Antennas and Optics :: 25.08.2012 15:51 :: bobsun :: Replies: 7 :: Views: 355
It is a design of electronic earrings. The housings were made of milled PCB and pieces of plexiglass with holes for batteries. The device is powered from 3V cr2032, which is the heaviest part of the earring.
Show DIY :: 17.09.2012 15:13 :: Vermes :: Replies: 1 :: Views: 288
good job!, very thank you. Can you tell me life time battery (cr2032) of this radio key, I'm developing a product same idea with you an it's life time of battery very short. I try open your schematic but not possible. Thank again :wink:
Microcontrollers :: 21.03.2014 04:59 :: tuanhai1989 :: Replies: 4 :: Views: 1734
Due to the space limitation, I would prefer not to use an extra power supply board.
The current is low, I am using a cr2032 battery to supply the power.
What are my choices?
You can make one more PCB with power connections on it. Each board is connected to one connector on that board, and that board i
Hobby Circuits and Small Projects Problems :: 09.01.2013 19:46 :: chrisoffice :: Replies: 3 :: Views: 361
I have designed a small transmitter (and receiver) that will use a Microchip MRF49XA transceiver chip. I have layed out both boards but on the transmitter board (remote control) I am having trouble selecting an antenna. The board is very compact as you can see in the picture below. I was planning on using a piece of wire for antenna but realized it
RF, Microwave, Antennas and Optics :: 10.02.2013 22:29 :: ltkenbo :: Replies: 6 :: Views: 585
This clock with additional functions of date and thermometer is built on six Nixie tubes.
use of AVR microcontroller
possibility to maintain timing (RTC a
Show DIY :: 10.03.2013 09:29 :: Vermes :: Replies: 0 :: Views: 983
Nobody makes a CR-2022 battery. Maybe you have a cr2032 battery?
A cr2032 coin battery is designed for a continuous 0.19mA load which is almost nothing.
Its datasheet shows its voltage dropping to 2.4V with a 28.5mA load for only 2 seconds.
You need a motor from a watch, the vibration motor from a cell phone or the tail motor of a small toy helic
Electronic Elementary Questions :: 07.08.2013 19:58 :: Audioguru :: Replies: 10 :: Views: 314