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I am considering laying out my own PCB for a general purpose 8051 microcontroller board. I use the Dallas-Maxim DS89C450 in many projects and I always start out by making the circuit on solderless bread boards. All my designs include a MAX232 or some sort, a 74-125, crystal socket, 2 status LEDs, and the 40 pin PDIP uP. I'd like to (...)
I frequently throw together little 8051 projects, always starting out on solder-less bread boards. I get annoyed that I'm always creating the same basic 8051 circuit, then building off of that. I use the DS89C450 (I have dozens), so my base circuit always has the micro, a 74125, a max232 of some sort, crystal, ... etc. I got to thinking it
It is not a good idea to test the switch mode power supplies on bread board, unless you are expert in power electronics. High frequency switching currents creates lot of noise and spikes in ground. PCB with good layout is recommended.
Hi, I am working on LED bulb. I have made circuit . I have series connection of 16 3.2V LED, and a 1K 1W resistor. But the circuit that is on bread board is working fine but with the same circuit on PCB the resistor is getting very hot. Can anybody tell what can be the problem. Mains supply is 220V. Thanks, Nitin
My breadboards come with a sticky adhesive back. Then, there is a loose metal plate on the bottom. I think it is aluminum. Is the metal plate supposed to be attached to make it work? Can I just discard the metal plate?
Hello All, I am trying to rig up Op-Amp servo loop circuit on bread board. Please let me know if anyone has tried it earlier. Thanks --Regards RJ
hello everyone, I bought a new DS1307 from the market including Crystal (32.76khz). i connected ds1307 in bread board and given 5v when i tried to check the crystal frequency (Pin2) in Oscilloscope i couldn able to see 32.76khz i don know what's wrong with the circuit. i don think i made wrong circuit because its simple circuit have le
For 5v supply (5v and gnd) you should use single supply opamp like LM358, LM324 etc. You should not use 741. For LM311 issue, check the operation of LM311 in a bread board using a potentiometer and two resistors as voltage divider. You first need to make sure that LM311 is working properly. Upload schematic, otherwise it is difficult to understand.
There is a connector shown in page no.5 of the pdf what you do basically take a wire from the Ground PIN of that 2pin Connector(Ext Power) and place it in bread board so you will get ample space to connect the devices and sort it to the board Ground
Hello, I am using sim900 GSM module. To the module I would like to connect microphone over 10 meter long cable. If I use basic microphone preamp I hear noise when I make a call. If I disconnect preamp and module there is no noise. I think that is because ground connection. Than I decided to breadboard differental amplifier here is [URL="
Hi , For my bread board ground connection is required . I don't have DC power supply . Can I use Main's earth wire as bread board connection with out safty violations ? Thx, Saptha
hi all, I am trying to make a simple charge controller using 555 to charge my emergency(6v sla battery) from a solar panel of 12 v. This is the circuit made i on bread the output pulses drives a mosfet. Th
Hi.....!!! i done my first project "blinking LED" with simulations and on bread board too. now i want to make another project...but what should be second as i am newbie. please tell me.. Thanks
when i implemented this circuit on bread board it works fine but i am not able to get it on PCB. when ever i supply 555 with 9v it starts heating up. below are the schematic and board file attached. - - - Updated - - - its a simple delay circuit. help me out.
hi all im doing a project on CAN bus using PIC18F458 microcontroller. im using mikroC compiler.i hav attached the block dia below...i got this proj from dogan ibrahim book.i implemented the below block in two bread boards.but i cannot see the temp value on LCD.the program is executed fine in mikroc.....i donno wher the problem is....LCD s
Although I basically agree with the previous comments about the circuit, I think the bread board design in the original link might explain why the circuit exposes a certain succeptebility to GSM transmitters despite of RF-wise shorted OP inputs, simply through rectifying the RF picked up by the "antenna" wires connecting the components. The range o
when u are working with high currents, dont go with breadboard, pcb is the only solution ,and as u already said that simulation is working fine,,,so go throuch the pcb design,, use expresspcb, or eagle ,,,,both are good software and free too,, Best Wishes --BawA--
Heya paddy_p, Another problem can arise from the way you have lay out your circuit , For example if you have done it on a bread board and the wires near to the Interrupt wires are switching , In worst case you can assume that there are two wires near to the Interrupt wire that are simultaneously switching , This will cause induced voltage on the i
hi, i have baught genius g540 two days ago. and since then i am trying to blink an led on P1.B0 of atmel at89c52 on bread board. i am using mikroc pro for 8051 software for creating hex file. and using g540 software to program microcontroller. things i know for sure . those are properly working: 1: power supply. i have DMM and i checked it. its
For safety reasons it is NOT recommended to use bread boards for such high AC voltages. If the board is wet, it will break down or burn, also it allows the exposed components to be touched. This all is dangerous. Please always separate the AC voltages > 60 V from low-voltage circuits. Use safe plug-in wall AC/DC converters instead, or a (...)