How many motors can a typical driver hold?
I'm looking at some motor drivers and have come across the question, how many stepper motors can a driver like...
View ArticleSerial between Arduino and Einsy Rambo ?
I want to do serial communications between an Arduino and an Einsy Rambo (which is part of my Prusa i3 MK3 printer). I believe that the Einsy Rambo serial pins, TX and RX, operate at 5 volts, like the...
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Linear Potentiometer not Working
I am using this linear potentiometer with my Teensy 4.1 but my analog output doesn't change at all when I actuate the probe. This is the datasheet for the sensor: This is how I have it wired: With red...
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Arduino Uno R3 not working with host shield
Hey guys, new to this field and still figuring stuff out so thank you for any help. I have an Arduino UNO R3 from Elagoo and a USB Host Shield (in the pictures) Reference: USB Host Sheild...
View ArticleArduinoModbus / RS485 conflict between Serial and Serial1
Hi All I am attempting implement ArduinoModbus on my STM32 Poternta H7 using the breakout board. Its well documented that in ArduinoRS485 that the RS485 object is hardwired. If you are using the...
View ArticleMaking sense of PCA9685 registers
Using an ESP32 to control many PCS9685 LED driver boards. I2C Scan of a single board shows 0x40, 0x70, 0x80, 0xC0 and 0xF0. 0x40 is the main address of the board. 0x70 I presume is the All_Call...
View ArticleNeed a contract programmer
Project: Help build a working prototype of a consumer electronic device *. Device design and specs already defined. Qualifications/requirements: Must reside in Minnesota Experienced with Seeed Xiao...
View ArticleOLED is showing to much
Hi This is a menu program that displays 1.5 lines. How to change it so that the display shows only one line? #include <SPI.h> #include <Wire.h> #include <Adafruit_GFX.h> #include...
View ArticleOfficial Raspberry Pi 7'' touchscreen + Arduino
I was wondering if the Arduino Giga R1 Wi-Fi could drive an official Raspberry Pi 7'' touchscreen. If so, what are the steps/necessary libraries/drivers required to do so. Thanks for any help/reading...
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Programmable gain amplifier to amplify load cell signal with Teensy
I am building a datalogging device using a Teensy 4.1 and the Texas instruments ADS131M08 external ADC. This is the datasheet for the ADC: ADS131M08 8-Channel, Simultaneously-Sampling, 24-Bit,...
View ArticleTrouble counting and debouncing
I'm making a counter for work that counts the number of times a micro (limit) switch is pressed using an Arduino nano. The problem is that the machine has adjustable speed, and seems to skip a count...
View ArticleSPI communication, slave talks to master
I have an ESP8266 as the master for my project and arduino nano for the slaves. I've already managed to get my master to talk to my exclave. My slaves must send information to the master at all times....
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Error in texting using ESP32 and SIM800L V2
Trying to connect and send text using ESP32 with the SIM800L V2 module but I am receiving error after pressing the button. Can anyone check if there are issues with my code/connections? #include...
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Fuse Rescue: reading issue
Hi all! I'm building a fuse rescue for ATmega328p: The Nano is working at 8MHz by the internal RC oscillator, to gain 2 I/O pins. Nevertheless, I've had to share two pins between programming signals...
View ArticleNeed help uploading code through the USB on my Arduino
I recently designed an Arduino PCB and got it assembled from JLC as well. It consists of a ATMEGA328pu-TH and when I first got it I faced a lot of problems. Like: 1)It won't show up no where on my...
View Article315Mhz Receiver-Transmitter and 4 channel relay can't working stable
I have using 4 Channel 5v relay control module and 4 channel 315Mhz receiver-transmitter. Pin Connections: 5v-Vcc GND-GND D0-IN1 D1-IN2 D2-IN3 D3-IN4 VT- Green led connection is like this, but when...
View ArticleRelay for heating element keeps getting destroyed
Hi Everyone! Let me preface by saying my knowlegdge on how to design electrical circuits is really poor, so any efforts you can make to dumb down the language you use is greatly appreciated. I am...
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Using resistors to scale the brightness of 12 LEDs
Dear Arduino community, I have a problem with the following project: wokwi.com 12 LEDs - Wokwi ESP32, STM32, Arduino Simulator Run IoT and embedded projects in your browser: ESP32, STM32, Arduino, Pi...
View ArticleUploading FPGA code---utility not working
I created a simple FPGA project on Intel quartus and wanted to upload the code to the FPGA but was not able to do so. The difficulty is how to use the utility to upload the code mentioned on this...
View ArticleLoading .ngc files into Universal Gcode Sender
I'm building a 3 xis mill based on UGS, Grbl, a Uno board, 3 TB6600, and 3 Powermax 2 Nema 23 motors. I'm hooking up the motors individually to the board, and with a small sketch, testing them on the...
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