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I'm connecting 8 mcp chips to the same SPI bus where the master node is a Raspberry Pi3. 1. I'm trying to check whether some of the lines would need a driver or not, between master line and slave, but I don't see information about current parameters on datasheet. I would like to check if a master SP..
I am fairly new to programming in C, and have been mainly learning from online forums and videos. I have a PIC16LF15325 that I am programming with XC8 compiler and MCC to setup the header and C files. I have a pin configured as GPIO that is controlling the LED status. I am wanting ..
PIC18F26K83 MPLABX 5.35 XC8 2.1 I have a design in two different PCBs. One is 5V powered, the other 3.3V. The same external circuitry has always worked fine with earlier 10-bit ADC PICs. On both the ADC2 module (in basic mode) is reading much higher than it should. I tried to setup a test using the ..
Hello! It’s been a long time since I’ve posted here! I’ve got a weird question. I’ve inherited a high dollar massage chair, and it has a huge flaw on the sensor side, sort of like the old Land Rover wheel sensors. It has 3 motors that have hall sensors to measure rpm. The system has wiring issues an..
Hi,I am trying to add multiple IOs to my circuit using the MCP23S18, have anyone tried to daisy chain this chip? Looking at the datasheet I don't see a way to do it but probably someone in the forum has tried it. This will save me from using a ChipSelect for every chip. Thanks..
Hello, I am trying to Switch On/Off a laser that requires 2.7-3.3V to turn on. I have tried using BSH114,215 NMos. I have applied 3.3 Volts at the laser positive side and the negative side of the laser is connected to the drain of NMOS. and I am using 3.3V input from the controller to turn it on and..
I've looked around and it seems that the PORTD has some issues being set as an input. I had my program working just fine until I decided to swap some pins to use the internal pullups on the PORTD to save on the external components. Previously PORTD was used as an output. Somehow I messed something u..
Hi, Based on the datasheet, let's say i calculate the minimum acquisition time is 2us. I believe the acquisition time is the time required to charge the internal capacitance and parasitics. If i take samples with an acquisition time of 3us, 9us, and 12us on a flat DC signal should i expect the resul..
Hi, I'm planing to use only one IC on my PCB design for enabling and reading some pins, less than the whole of 16 available GPIOs. The number of used GPIOs is 13, so there will be 3 of them being not used. So my question is:- what about connection and configuration of this 3 GPIOs? Do they need to b..