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A hardware hack to avoid even the multiplication and ">>" is to use a potentiometer to divide input voltage and adjust it to get 5000 as direct adc value when we set input as 5V.
We can use the code generated by cubemx, that is absolutely fine. Now if you want to generate low level driver code instead of the bulky HAL libraries, you can opt that option in the code generator, (LL), then you will be able to fine more or less similar to you PIC style of coding. Also without...
Hello all my post readers,
I am very new to FPGA, a weak ago started playing with a spartan 6. (Papilio pro). Now connected a 320x240 LCD to it and planning to do something with that as a hello world. I have a decent experience on electronics hardware, digital circuits and embedded firmware...
Hi,
I can see a new product in mouser DIO6011 which is a pin to pin equivalent to TLV6256x 1.5-A High Efficiency Step-Down Converter (TI).
The interesting thing is the cost is very very less compared to the TI part. May be I can assume the quality of TI part in various aspects will be...
Also I am not able to extract the maximum power.
Is there any simple MPPT method for this approach ?
What if I can keep an LDR as a pilot circuit to detect light and can map it to OCV of the solar cell and accordingly if I adjust the buck PWM so that the CCV of solar cell will never go below...
Hi,
I am charging a lipo from solar cell. Lipo capacity is 2000mAh 3.7v.
My solar cell is 9v 3W.
Currently what I am doing is, I am using a buck regulator to convert 9v to precise 4.2v. I connected the 4.2 to 2000mAh lipo and here I am taking advantage of the maximum current limitation of...
Hi,
I am a bit confused about the the mAh and Wh specifications for a 3.7v lipo.
For example I have a routejade battery YE402025C 3.7V 160mAh, 0.592Wh.
Now I have a varta batter VKB: 56416 201 026 which is 3.7v 150mAh, 0.6Wh.
So is there no relation between mAh and Wh for a battery ...
Lithium ion/ Lithium polymer batteries are used in situations where you have less space, you need to charge it faster, you need a good discharge rate etc etc.
In short, these batteries are modern batteries and are currently the best for any portable devices like mobile phones, laptops etc...
Hi,
Yes, true the mosfet based level shifter is more suitable for I2C but for high speed SPI etc I feel the 10k pullup will deform the signal badly.
I tried this part for level shifting. It is two directional level shifter.
After checking the internal block diagram I can see two 9k...
Hi,
I am running an MCU at 1.8v. Another device is connected to 3v because that is the lowest possible voltage for that chip.
My main aim is to achieve the lowest possible power because I am running the system with a 50mAh lipo.
But for interfacing the communication from 3v side to 1.8v...
I will recommend to buy any stm32 discovery board and try doing coding from peripheral examples. There will be example bundles which covers all the peripherals like ADC, DAC, RTC, POWER, DMA, WDT, LPTM and a lot...
Also recently ST developed a very interactive automatic initialization code...
Hello,
I am checking the circuitry for a 27MHz regenerative receiver.
These are all the circuits which I am referring from internet. Also I found similar circuitry from the chinese toy car receiver circuit which uses the RX2B TX2B decoder encoder IC pair along with these kind of super...
Hi,
I am simply trying to make a high current capable boost converter. I am giving input from an SMPS which can give a max 35A at 5V. I am making a digital variable boost converter which can give any voltage from 5 to 30V. I am using a 4.75mH torroidal inductor with around 10A DC current...
It says it is not recommended to work at the absolute max and min, but you are no where near to the absolute minimum, so it should be fine!
Also at the first page it clearly mentioned as a feature Input Will Withstand Negative Inputs Up to 5V
From the datasheet Page no 3:
1.0 ELECTRICAL CHARACTERISTICS
Input Voltage ...................... VDD+ 0.3V to GND – 5.0V
So I believe it can take GND - 5.0V ie 5v less than ground voltage. So -1v should be fine.
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