Case study
Wireless ESP32 game prototype
LED button remotes and a central sound unit. The radios talk with ESP-NOW. The central unit plays clips from a DFPlayer.
LED remote → ESP-NOW → central unit → DFPlayer
- Record
- Completed Upwork contract, rated 5.0. Firmware is private.
- When
- 10 Oct 2025 to 25 Nov 2025
- Stack
- ESP32, ESP-NOW, DFPlayer
- Hardware
- ESP32 remotes with LED buttons · Central sound unit · DFPlayer
The problem
A party of handheld remotes and one speaker box should not need a router, a phone, or a Wi-Fi password. The hop has to be board to board, and the sound has to start because a button was pressed.
What I built
The Upwork contract is “Build Wireless ESP32 Game Prototype (LED Button Remotes + Central Sound Unit)”. It finished between 10 Oct 2025 and 25 Nov 2025 with a 5.0 rating, from two reviews.
The firmware is a multiplayer ESP32 game on ESP-NOW, with a DFPlayer for the sound. ESP-NOW is the link because it stays between Espressif modules and does not join an access point. The DFPlayer is on UART, and the clips live on the microSD card in the player.
What the client wrote
The visible part of the review says the programming and design work landed, and that the job was a pleasure to run. The profile cuts the review after that. I have not completed the sentence.
What is not public
The repository is private, so there is no code link. I am not stating a remote count or a measured range. Those figures are not in the record I am publishing from.
“Working with Roshan was an absolute pleasure from start to finish. He exceeded every expectation — not only delivering exceptional programming and design work, but doing so with an incredible...”