Chandradipsinh Jadeja
@BuildWithByte
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Founder and CEO of ByteSpectrum Technologies LLP | 300+ Projects Helping startups & enterprises build end-to-end embedded & IoT products.
India
Joined July 2025
Trying to record audio on ESP32 and wondering what format to use? . 🎙️MP3? WAV? ADPCM? Here’s what you need to know before making that decision 📷 👇
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RT @BuildWithByte: @engineers_feed As an embedded dev, I confirm:.Silkscreen is our version of an easter egg hunt 🐣.One of our customer PCB….
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Client tried some “vibe coding” on Seeed Studio XIAO ESP32-S3 Sense….Let’s just say it vibes, but doesn’t work. 😅. Now it’s on us to fix the chaos. Time to turn spaghetti into solid firmware. 🔧
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🚀 BLE range test update (nRF54L15):. Achieved ~170 meters line of sight using 1 Mbps PHY at +8 dBm TX power. No Coded PHY, no tricks. Just raw performance. 😎📡. Honestly, this exceeded my expectations. Nordic’s RF game is solid.
📦 Just got my hands on the Insight SIP ISP2454-LX module!!!.Ultra compact, BLE 6.0 ready, and based on Nordic’s nRF54L15. Next step?.🧪 Testing its real world BLE range (Coded PHY, anyone?)
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🎥 Debugging SPI on a tight desk setup?. I was seeing mysterious noise on DSO signals. 🤔.Turns out, the culprit was… my logic analyzer cable jiggling near the DSO probe! . ✅ Fixed it by unplugging the analyzer from the PC and moving it away from the DSO. 💡 Lesson: In tight
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Thinking of adding Wi-Fi to your Bluetooth LE product?. Nordic’s nRF7002 is made exactly for that. 🧠.It is designed to coexist with other nRF chips like nRF5340 to deliver a smooth combo of Wi-Fi + BLE. 🧩 In this setup:.• nRF7002 = Wi-Fi transceiver.• nRF5340 = BLE + Host +
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Busting our ass to deliver this client project.no mercy, just results.
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💯.
write 100 posts atleast 5 will blow up.apply to 100 places atleast 5 will be interviews.launch 100 apps atleast 5 will have users. throw more darts, get more luck.
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True for startups, side-projects, and even firmware releases. There’s no perfect time—just start, ship, and iterate. 🔁 Reposting this because it hits hard:.
waiting for the right moment?. there isn’t one. start now. adjust later.
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📦 Just got my hands on the Insight SIP ISP2454-LX module!!!.Ultra compact, BLE 6.0 ready, and based on Nordic’s nRF54L15. Next step?.🧪 Testing its real world BLE range (Coded PHY, anyone?)
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🧠 1 Mic.🔊 1 Speaker.📦 External Flash.📶 Wi-Fi.🎛️ 9 Switches.🚨 10 LEDs.🎯 Vibration Motor.⚙️ BLE + Accelerometer.All powered by an nRF5340. Guess what I'm building?.(Hint: It's smart, interactive, and wearable!) 👀👇
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💯.
IDF 5.5 has been released and is considered the latest stable. All new #esp32 projects should use it.
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Without PPS or proper async access, they were stuck with imprecise GNSS time polling over AT. Result? They missed their core requirement: precision timing. 🚨 Always get feasibility done before you start building. Still unsure? Consult ByteSpectrum before building your MVP.
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One of our clients built a device that needed precise microsecond-level timestamps using GNSS. Sounds doable, right?. But they chose a hybrid GNSS + cellular modem with:.❌ No PPS interrupt.❌ No debug UART or USB connected.✅ Only AT interface. Polling ≠ precision. 
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Without PPS or proper async access, they were stuck with imprecise GNSS time polling over AT. Result? They missed their core requirement:precision timing. 🚨 Always get feasibility done before you start building. Still unsure? Consult ByteSpectrum before building your MVP.
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One of our clients built a device that needed precise microsecond-level timestamps using GNSS. Sounds doable, right?. But they chose a hybrid GNSS + cellular modem with:.❌ No PPS interrupt.❌ No debug UART or USB connected.✅ Only AT interface. Polling ≠ precision.
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Pick what fits your use case. Don’t force MP3 on ESP32 it’s not worth the pain.
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🔊 Summery:.• Best quality → WAV (raw).• Lightest on ESP32 → ADPCM (~75% smaller).• Need MP3? → Offload to server.
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Want smaller file sizes on-device?.Use ADPCM it’s much lighter and compresses audio by ~75%. ESP-IDF supports it out of the box!.⚠️ Slight quality loss compared to WAV.
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✅ Better alternative?.Send WAV (raw) or ADPCM to your server. Do the MP3 encoding there. Your server has more processing power, and your ESP32 stays responsive.
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