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Recent content by CaptainSpock

  1. C

    Troubleshooting LTC3780 4 4-Switch Buck-Boost Controller

    That's a great idea thanks. Yes the mosfets switching work as follows I will give your method a try and give a update over here CaptainSpock
  2. C

    Troubleshooting LTC3780 4 4-Switch Buck-Boost Controller

    Actually that schematic have been simulated in LTspice. I still not very sure how is the current limit is set so I decided to build it on breadboard to investigate further. I followed the formula in the datasheet to set the max current for Buck and Boost mode but in the simulation it the output...
  3. C

    Troubleshooting LTC3780 4 4-Switch Buck-Boost Controller

    It is supposed to as that's the standard connection provided in the datasheet, the feedback should be able to detect voltages above or beloww the targeted voltage.
  4. C

    Troubleshooting LTC3780 4 4-Switch Buck-Boost Controller

    thanks for replying 4A is set as the max current but I connected a load of 330ohm it still gave me an output of 3.8V. Is there something wrong I did there setting my current limit for this controller? CaptainSpock
  5. C

    Troubleshooting LTC3780 4 4-Switch Buck-Boost Controller

    Hi everyone I reference this design from LTC3780 datasheet and made some adjustment to output a 12V/max current 4A from a input range of 5-15V. I build the circuit on a breadboard and tested with a input voltage of 5V but I am getting only 3.8-4V on the output. Can anyone enlighten me what's...
  6. C

    Battery circuit to produce ±3V and +5V

    So what do you recommend?
  7. C

    Battery circuit to produce ±3V and +5V

    Thank for all your replies, I'm thinking of using 4, 1.5V battery to achieve the 6V for INA321 then stepdown the voltage to ±3V Can anyone tell me whether this is viable? CaptainSpock
  8. C

    R-R interval ecg detection in C/C++

    Hi iVenky, ECG(electrocardiogram) is related to Einthoven's triangle where the leads are placed at RA, LA and LL. However, what i am looking for are programming codes that can help me distinguish out the R to R peaks of ECG signals (: CaptainSpock
  9. C

    R-R interval ecg detection in C/C++

    Hi everyone, Does anyone knows of any code for the detection of R-R peak intervals of ECG signals? I am currently working on my Final Year Project and i am using Code Composer Studio (CCS). All help are greatly appreciated (: Thanks, CaptainSpock
  10. C

    PPG moving average algorithm

    Hi guys, I am currently working on my final year project and i am having difficulties in writing codes for PPG moving average algorithm in CCS C++ using a microcontroller MSP430g2232. Does anyone have any codes that can help me? I tried searching the internet but unable to find any resouceful...
  11. C

    Battery circuit to produce ±3V and +5V

    For now I'm using 2 1.5 volts bat to obtain ±3V by charge pump max865. But I'm unsure how to get the +5v power CaptanSpock
  12. C

    Battery circuit to produce ±3V and +5V

    Hi everyone, I'm currently doing my Fyp project, which to design a portable system to monitor ankle brachial index. I already have a PPG and ECG circuit but they both requires different power voltage. The ppg circuit uses ±3V to power op amp ic MCP602 and ECG uses +5V to power instrumenttation...
  13. C

    Require code help to calculate Pulse Transit Time

    Hi Thanks for replying actually I'm familiar with the theory behind the peak detection. However I'm not sure of the coding protocol for this application as this is the first time programming a microcontroller. Captianspock
  14. C

    Require code help to calculate Pulse Transit Time

    Hello everyone, I am currently working on my final year project to detect Ankle Brachial Index (ABI) using Pulse Transit Time (PTT). However, to calculate PTT i have to create a software to compare both Photoplethysmography(PPG) and Electrocardiography(ECG) signal peaks. I have already created...
  15. C

    LCD help For Msp4302232

    Hi guys, thanks for the help above (: Now i am able to get my LCD working and know which ports to connect to. However, does any one know of any LCD temperature sensor codes for MSP430 launchpad with MSP430g2232 IC? I tried many sample codes from the internet such as this...
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