I am doing a project where I have to design a PCB. I am new in this field. I am using EAGLE PCB software.
About my project: I am working on a project where I have to measure the environments temperature. I am using TI's CC2541 Bluetooth soc, temp sensor TMP102, TPS 62730DC DC convertor, SOC debug flash TSW-105-02-S-Q. Whenever I put the battery in my PCB, the temp sensor reads the data and send it to my phone via Bluetooth. For this PCB design I am using eagle software. Since I am new to this software and I am working alone in this project I want help from you all.
Till now I have the schematic design on software. I am attaching jpeg image file here, so you guys check the file and tell me if I am going in a right direction or not?
And also how to check the design if it is correct or not? I clicked on the error button, it is showing warnings only not an error
Then from what I can make out you have an almost impossible task.
The circuit seems to have both a switching regulator and an RF antenna. Either one is a killer for a beginner. With these things it is not just a matter of connecting the components together you have to be aware of the effects of :-
Stray capacitance.
Stray inductance.
Ground planes.
Signal coupling.
Using the right types of components - that is capacitor types and inductors.
The effect of the different types of PCB substrates on strip line circuits ( I assume you have a strip line circuit for the antenna )
I would expect an experienced professional engineer to take between two and three attempts at laying this out before a satisfactory board was obtained. With lots of detailed testing between each iteration. I have managed specialist engineers with lots of experience and not one of them ever got it right first time.
grumpy
Thanks for your reply...
I know its a bit difficult task since RF antenna is also there......The problem is I am working alone, I don't have an engineer with me that's why I posted in forum so that I can get the help from you guys.......But I am sure that I can make this project....I have to kept in mind about what you have said like capacitance, inductance, etc......and all other things which involves in PCB fab......
I will be very much thank full to you if you can help me in this project.....
It doesn't matter weather it will work in first time or not and if not I'll try again and again till I succeed......Its my learning age and I am not scared of failure...........
The trick is knowing why a board failed. For that you might need more test equipment and knowledge than you have at the moment. I am not saying you can't learn but there is a limit to the online help that can be provided. That limit depends on what information you can understand.
Mark
Thanks for your reply....earlier I tried this one but I don't need of USB....I want my PCB with debugger......its CC2540 with USB...I am following the CC2541 EM break out board and CC2541 sensor tag...
i am attaching new .jpg file where I encircled new antenna with red circle......
yeah its too far apart....
and about ground plane the blue and red polygon around the pcb i think is the ground plane....
grumpy
I am following the CC2541 breakout boar...so the antenna used in that board I have used the same antenna...
I am attaching the pdf file of my schematic diagram so you can see the antenna which is same the CC2541 Rf layout board....
