DevHeads IoT Integration Server
The DevHeads IoT Integration Server accelerates technology engineering by helping pro devs learn, share and collaborate.
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DevHeads IoT Integration Server
The DevHeads IoT Integration Server accelerates technology engineering by helping pro devs learn, share and collaborate.
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Handling Disconnections in KiCad with Rat Bites and Conductive Screws
Hi, I've got a KiCad project (revised 1-inch-midi) that I've been working on that involves 3 boards separated by rat bites. Ground, VCC and two signal pins are passed between the boards via conductive screws nuts. While I think I have a functional design, the error checking function on the PCB editor shows disconnections between these pads as they are not connected as-drawn. Is there a way to put connections into the schematic layout so that the PCB editor is satisfied?
I think it will work as-is, but would be interested in any ideas/suggestions. Also I'm certainly open to any critique of the design in general, as I'm planning to order it soon. I put up an earlier version of the board here for your perusal: https://github.com/JeremySCook/PCBs/tree/main/1-inch-MIDI...
Seeking Feedback on ICSP Configuration for 1-Inch MIDI Project Revision
Hello - I'm working on a revision of my 1-inch-MIDI project https://www.youtube.com/watch?v=5Ws_JfCw5NY that incorporates a potentiometer on the AUX pin, along with an ICSP header arrangement. Thinking I'll use a pogo pin device.
Anyway, I think I have the ICSP configuration correctly laid out here, but I would love a second opinion. Happy to hear any other suggestions or answer questions on the project!...
Issues with measuring multiple switch inputs via single DAC in R-2R resistor configuration
Working on a project trying to measure multiple switch inputs via a single DAC in an R-2R resistor configuration. Took me a while to realize that the inputs needed to be HIGH or LOW, not HIGH or OFF.
What also threw me off though was that each side of the breadboard's power/ground rails need to be jumpered together in the middle. That took me a while to figure out too. Guess you shouldn't assume anything when working on hardware!...
How can I optimize power and ensure efficient operation of the VL53L0X sensor and OLED on BeagleBone
hello devs, still based on my project parking assistance system using a BeagleBone Black running Embedded Linux, VL53L0X time of flight distance sensor to detect the distance to nearby objects and a 0.96-inch OLED display to show the distance and warning messages. How can I optimize the system to reduce power consumption and ensure the display and sensor work efficiently, i have ensured correct power sequences, avoided immediate reinitialization after power on. But the `Sensor not responding a...
Solution:
i was able to this earlier today am passed this stage and have a different issue now
Why isn't my "Hello World" displaying on the LCD screen despite correct connections and power?
Hey Devs , I've been trying to make this simple LCD screen circuit that displays "Hello World".
I have made my connections like this
And my code is very simple
`` int rs = 7, en = 8, d4 = 9, d5 = 10, d6 = 11, d7 = 12, readPin = A2;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);...
Solution:
It may be due to the screen itself being broken
How to optimize PCB design for DRV8320 and STM32G431RBT6TR to minimize vias?
Hey everyone,
I'm currently working on a PCB design involving the DRV8320 and the STM32G431RBT6TR. As you can see in the attached images, I'm trying to minimize the number of vias between these two components. Ideally, I'd like to have straight traces with minimal or no vias, maintaining the same orientation of the chips.
However, I'm finding it challenging to maintain the necessary functionality, such as BEMF detection with the Virtual Neutral Point and the different comparators for zero-crossing BEMF....
Solution:
How to optimize resistor values for reading multiple buttons on a single analog input?
Came up with some code for a project I'm working on that is able to read two buttons for each analog input (and tell if two have been pushed) based on this circuit. It works, but is not really optimized resistors-wise. I've yet to figure out a generalized expression for this type of parallel circuit (thinking one in which I could make it 3, 4, whatever resistors/buttons), which admittedly would be a matter of elegantly combining some algebraic equations.
Any thoughts?
Here's the rest of my code, FWIW https://github.com/JeremySCook/arduino-experiments/tree/main/MIDI/1-inch-MIDI...
Troubleshooting ADC Readings from Photodiode on Arduino
Hi everyone,
I am trying to rebuild a device and have wired everything according to the schematic:
You can see that the output pin of the photodiode (pin 5) is connected to the ADC pin A0 of the Arduino. By adjusting the potentiometer, I should of course get values between 0 - 1023 (10 bit ADC). However, no matter how I adjust the potentiometer, I always get 1023, so I think the sensor is "overshooting" all the time. I have tested the potentiometer previously and it works fine. I suspect there is something wrong with the wiring diagram....
Solution:
In the circuit i cant see where the arduino is connected to the power source
