Circuitrocks

<r>Finally got a used Rigol DS1052E. Probe has a 1x/10x switch. Nobody explained when to use which.<br/>
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<B><s>[b]</s>What I gathered:<e>[/b]</e></B>
<LIST><s>[list]</s>
<LI><s>[*]</s>10x: divides signal by 10, but higher bandwidth + less circuit loading</LI>
<LI><s>[*]</s>1x: full amplitude ...

<r>Thesis battery node. Datasheet says deep sleep ~10uA. My board draws 2mA measured. Battery dead in days, not months.<br/>
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<B><s>[b]</s>Checked:<e>[/b]</e></B>
<LIST><s>[list]</s>
<LI><s>[*]</s>esp_deep_sleep_start() called correctly</LI>
<LI><s>[*]</s>No Serial.print keeping UART awake</LI ...

<r>Thesis sensor stack: BME280, OLED, MPU6050, RTC. Two devices claim 0x68 (MPU6050 + DS3231 RTC). Bus locks up.<br/>
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<B><s>[b]</s>Tried:<e>[/b]</e></B>
<LIST><s>[list]</s>
<LI><s>[*]</s>AD0 pin to GND on MPU (changes to 0x69)</LI>
<e>[/list]</e></LIST>

Works. Pero hindi ko alam what to do if ...

<r>Thesis needed custom PCB (sensor breakout + ESP32 socket). KiCad seemed obvious choice. 3 revisions later, here's what I learned.<br/>
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<B><s>[b]</s>Trip 1:<e>[/b]</e></B> Footprints from random library mismatched actual part. Always verify pad pitch vs datasheet before ordering. Bought 20 ...

<r>Thesis needs signal timing viz (PWM, I2C). Multimeter not enough. Budget PHP 5-10k.<br/>
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Options:
<LIST><s>[list]</s>
<LI><s>[*]</s>DSO138/DSO150 pocket (~PHP 1500): toy, concept only</LI>
<LI><s>[*]</s>Hantek DSO5072P 2ch 70MHz (~PHP 12k): entry-level real</LI>
<LI><s>[*]</s>Used Rigol ...

<r>Arduino IDE breaking on me again. Library version conflicts, autocomplete missing. Heard PlatformIO is the upgrade path.<br/>
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Questions:
<LIST><s>[list]</s>
<LI><s>[*]</s>Learning curve, gaano katagal?</LI>
<LI><s>[*]</s>Same sketches run unchanged?</LI>
<LI><s>[*]</s>Worth for single ...

<r>Thesis sometimes needs visualization of signal timing (PWM, I2C). Multimeter is not enough. Researching scopes pero budget tight (PHP 5000-10000 max).<br/>
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Options I'm seeing:
<LIST><s>[list]</s>
<LI><s>[*]</s>DSO138 / DSO150 single-channel pocket scopes (~PHP 1500): toys, but get the ...

<r>Thesis is dragging Arduino IDE to its limits. Library conflicts every other day, autocomplete sucks, dependency management feels like 2008.<br/>
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Heard good things about PlatformIO. Real questions:<br/>

<LIST><s>[list]</s>
<LI><s>[*]</s>Learning curve, gaano katagal bago productive?</LI ...

<t>Welcome sa club! Yung first time gumagana yung REPL sa Pico mo, parang first-time mo nag-Python sa interactive prompt, same level ng amazement.<br/>
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Downsides para naman fair: yung MicroPython runtime adds overhead. Pure C/Arduino code mas mabilis at mas memory-efficient. Sa Pico siguro ...

<r>Currently running a Pi 4 (4GB) as my home server: Pi-hole, Plex (light usage, 1080p only), and a Syncthing instance. Stable for ~2 years now.<br/>
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Nakikita ko yung Pi 5 (4GB and 8GB variants), faster CPU, faster IO. Tempting na mag-upgrade. Pero:<br/>

<LIST><s>[list]</s>
<LI><s>[*]</s>Pi 5 ...