High Code

We’ve officially qualified for the HICOOL Regional stage. HICOOL is a global entrepreneurship competition connecting startups with investors, mentors, and international innovation ecosystems. For High Boy, this means our vision for educational cybersecurity hardware and open-source firmware is moving one step further. #highboy #cybersecurity #hardwarehacking

We’re deep in the Sub-GHz antenna work right now. The challenge: one physical antenna for 315, 433, 868 and 915 MHz. We’re using active tuning to avoid making one big passive compromise, but of course that means RF switches, GPIOs, matching states and more validation. Tiny device, big RF headache. #HighBoy #RF #SubGHz #HardwareDesign #EmbeddedSystems

We hit a pretty classic hardware problem: we were running out of GPIOs on the ESP32-P4. At first, it looked like we’d need to add more complexity just to make room for the active antenna tuning switch. But after reviewing the architecture, we realized the USB switch wasn’t really necessary anymore. So instead of adding another workaround, we removed what didn’t need to be there. That freed the pins we needed and kept the design cleaner. This is one of the things that shows how challenging hardware engineering is. #highboy #hardwarehacking #EmbeddedSystems

We just published a new post on the High Boy Blog about how he started as a small community request, went through a bunch of early designs, and slowly became part of High Boy’s identity. High Boy has always been shaped by the community, and Octobit is one of the clearest examples of that. Click the link to read more: highboy.blog #HighBoy #opensource #hardwarehacking

TentacleOS just passed 1,000 commits on the dev branch. Drivers are already done for: Wi-Fi, BLE, NFC, RFID, Sub-GHz, Infrared, and LoRa. There’s still a lot ahead, but the foundation is finally becoming real: hardware, firmware, RF design, and UX all moving together. Open source means people get to follow the build as it happens. #hardwarehack #highboy

Did you guys know that the Brazilian security researcher who exposed a counterfeit hardware wallet scam involving a fake Ledger device designed to steal PINs and seed phrases is our co-founder, @vinp2205?

The tradeoff: Sub-GHz on the first prototype "will not be perfect." Needs tuning. That's fine, that's what the prototype is for. Hardware doesn't get good performance by accident. It gets there by measuring.

We kept the connector near the LoRa side. Reasoning: LoRa is the range-sensitive radio most users will rely on. Sub-GHz uses active tuning and can compensate more. Moving the connector would have caused mechanical clearance issues.

Rule of RF design: battery wires should be close to the antenna. Lithium cells are metal. Metal reflects RF. Having the wires near the antenna creates a predictable coupling you can compensate for.

Really cool to see GhostStrats covering one of the biggest High Boy updates so far. This is exactly the kind of conversation we want around the project: real progress, real engineering, and transparent development. Appreciate the time and attention put into this one. #HighBoy #GhostStrats

A small spoiler from the new industrial design direction of our open-source handheld for wireless and embedded experimentation. Still early, but this is the stage where industrial design starts influencing real engineering decisions: ergonomics, internal layout, manufacturability, RF constraints, and interface hierarchy.

The High Boy runs on two chips: ESP32-C5 (WiFi/BT) and ESP32-P4 (UI, NFC, Sub-GHz, everything else). Connected via SPI. This week we refactored 346 files across BOTH to speak the same language. Same naming. Same types. Same docs. No single chip does everything. But dual-platform means every shared interface must be perfectly aligned. 346 files. Both platforms. Build clean. #hardwarehacking #cybersecurity

Building hardware in China. 84% of hardware Kickstarters are late. What kills projects isn't the delay. It's silence. We document everything. @highcode_br

Weekly Live Q&A — every Friday at 9:00 AM EST. We host this weekly session to answer community questions, share production updates, and keep the project as open and transparent as possible. The live happens on Discord and is also shared on Instagram and YouTube. Join the Discord community here: discord.gg/xZ6ecf7Va Be there and ask your questions. #HighBoy #OpenSourceHardware #MakerCommunity

The core PCB schematics are finalized. Now the real optimization begins. At this stage, every millimeter matters. We’re refining component placement, validating RF behavior, and working alongside RF engineers to optimize antenna performance across Wi-Fi, BLE, Sub-GHz, NFC, and LF RFID. This is the part most people never see: not just making hardware work — making multiple radios coexist with stability, range, and reliability inside one device. You can see more on the link: kickstarter.com/projects/15026… #HighBoy #OpenSourceHardware #PCBDesign

We have another update on Kickstarter; if you'd like to know more, follow the link below. kickstarter.com/projects/15026…

This Friday we will have our weekly Q&A. More one Live Q&A with the High Boy Team, as promised!!!! Hey everyone! We’re hosting a special Q&A session this Friday at 9:00 AM ET / 11 AM UTC-3 (horario de Brasilia). 📷 The entire High Boy team will be there to hang out, answer your questions, and chat about everything that's coming up. Whether you have specific technical doubts or just want to say hi, we’d love to see you there! #highboy #live #highcode #hacking