Writing code for Arduino

Budget: 15000 UAH Deadline: 8 days

Hello.

We are ready to develop software for a weight dispenser based on Arduino Uno R3 with the specified components.

Our team has previously worked on similar tasks and has developed code for working with a load cell via the HX711 module. We have existing solutions that can be adapted to your specific assembly, wiring diagram, and dosing logic requirements.

Within the project, we can implement:

* coarse and precise dosing via relay;
* control of white and green signal lamps;
* operation with HX711 and load cell;
* simultaneous display of current weight on LCD1602 I2C and MAX7219 8x32;
* control menu;
* calibration of the load cell;
* tare;
* setting target dosing weight;
* configuring the percentage or threshold for switching from coarse to precise dosing;
* saving parameters in EEPROM;
* filtering weight readings to reduce flicker;
* processing buttons Start, Tare, Menu, Up, Down;
* correct completion of dosing after reaching the specified weight.

We can also provide protection against button bounce, software stabilization of weight readings, indication of the current operating mode, and a convenient code structure for further modifications.

To get started, we will need your pinout: connection of the relay, buttons, HX711, LCD display, and MAX7219. After that, we will adapt the code specifically for your scheme and prepare a solution for your order.

We are ready to discuss the details and start the work. Expand

Budget: 1500 UAH Deadline: 3 days

Hello! The technical specification is written as clearly and technically accurately as possible. I have excellent experience in software development for microcontrollers based on Arduino (C/C++) and am ready to implement the firmware for your weight dispenser.

How I will implement your project:

Stable weight without flickering: For the HX711 ADC, I will implement a moving average algorithm or a median filter. The readings on the LCD1602 and MAX7219 matrix will be stable, without jumps or flickering digits.

Reliable dosing logic: I will build the code architecture based on a finite state machine (FSM) and asynchronous timers using millis(). No delay() — the system will respond instantly to button presses and weight changes, eliminating errors when switching solenoids via relays.

Functional menu and EEPROM: I will implement convenient navigation with 5 buttons for calibration, tare, and threshold settings. All modified parameters will be reliably stored in non-volatile memory using EEPROM.put().

Budget: 4000 UAH Deadline: 3 days

Good day! I have experience working with Arduino, HX711, load cells, displays, and dosing automation. I can develop software for your weight dosing machine with full implementation of the operational logic, settings menu, and stable weight processing.

What I can implement:
• coarse and precise dosing via relay
• operation of signal lamps
• settings menu via buttons
• calibration and tare
• saving parameters in EEPROM
• displaying weight on LCD1602 and MAX7219
• filtering HX711 readings without flickering
• protection against false triggers and unstable data

The code will be structured and convenient for further editing. I can also assist with connection and testing. Expand

Budget: 25000 UAH Deadline: 10 days

I am interested in your project) I have extensive experience working with this ADC and with load cells in general. I can provide an example of a turnkey commercial project that has been implemented and is already operating in the market in Ukraine and neighboring countries. I have my own solutions for clear and, most importantly, stable operation of this ADC.

Budget: 1000 UAH Deadline: 1 day

Good evening, I have experience working with Arduino and its code, I am ready to complete this project in the shortest time possible. From my own projects, I can highlight a large-scale automated greenhouse. I will start writing right now.

Budget: 8000 UAH Deadline: 7 days

Good day, I have experience in writing code for microcontrollers based on Arduino. I have previously worked with the components you are using in this project.

I have a rough idea of how the code structure should look, but of course, I would like to discuss the details with you in private messages.

Budget: 1000 UAH Deadline: 1 day

Good time,
I have a question: do the vibromagnets turn on with relays or do we need to form a signal?
This affects the price.

Currently, the conditional rate is 1000 UAH/day.

Budget: 4000 UAH Deadline: 2 days

Good day!
I am ready to develop software for a weight dispenser based on Arduino Uno (HX711, LCD1602 I2C, MAX7219, relay, control buttons).
I will implement full functionality:
- two-stage dosing (coarse → precise);
- automatic switching between modes based on a set threshold;
- control of vibrators and signal lamps via relay;
- display of current weight on LCD1602 and duplication on MAX7219 8x32;
- stable weight filtering without flickering readings;
- control menu with 5 buttons (Start, Tare, Menu, ↑, ↓);
- calibration of the HX711 load cell;
- tare weight;
- setting the target dosing weight;
- adjusting the percentage transition to precise dosing;
- saving all parameters in EEPROM;
- non-blocking operation logic (without delay), stable real-time operation.
The architecture will be built on a finite state machine (FSM) for reliable control of all dosing modes.
Clarifications before starting:
- Maximum load of the load cell (1kg / 5kg / 20kg / other)?
- Is a full calibration of the HX711 from scratch required?
- Button logic: are short presses sufficient or are long/hold presses needed?
- Are additional messages needed on MAX7219 (besides weight)?
- The threshold for transitioning to precise dosing — fixed (%) or variable in the menu?
- Is the relay logic active HIGH or LOW? Expand

Budget: 1000 UAH Deadline: 1 day

I will do it taking into account all your wishes. I often program microcontrollers for my own needs.

Budget: 1000 UAH Deadline: 2 days

Hello!

I have experience in developing similar systems on Arduino, specifically working with HX711 (load cells), controlling relays, and building logic for automatic dosing/weight control. I have also implemented interfaces with LCD displays (including I2C) and LED matrices using MAX7219.

I have worked on projects with control menus (buttons, navigation, parameter settings), data storage in EEPROM, and implementing stable signal filtering to eliminate "jumpy" weight readings.

I can implement the logic you described: coarse/fine dosing modes, threshold switching, state indication (lamps, displays), as well as settings through the menu.

If needed, I can send examples of previous work or code snippets for you to evaluate my approach and level of implementation.

If necessary, I am ready to discuss details and deadlines. Expand