ツール¶
このセクションはツール収集に関するものではありません。
デバイスを安全に組立て、接続を検証し、推測なしで簡単なエラーを見つけるのに役立つ最小限のセットに関するものです。
iDryerおよび3Dプリンタの周りの自作デバイスでは、ツールは実践的なタスクに必要です:
- 電源供給に24Vが存在するかどうかを確認する
- プラスとマイナスが交換されているかどうかを理解する
- ワイヤの連続性をチェック
- サーミスタをテスト
- UARTシグナルが到達するかどうかを確認
- コントローラをフラッシュ
- 適切なコネクタを作成
- 電源低下を見つける
- ファンまたはヒータがオンにならない理由を理解する
最小セット¶
ほとんどの単純なビルドで、有用なツール:
- マルチメータ
- USB-UARTまたはUSB-TTLアダプタ
- はんだごて
- クリンピングツール
- ワイヤカッターとストリッパー
- 熱収縮チューブ
- 適切な端子とコネクタ
- STM32で作業する場合はST-Link
- より複雑な診断用のオシロスコープまたは周波数カウンタ付きマルチメータ
すべてを一度に購入する必要はありません。しかし、マルチメータと適切なワイヤツールは通常、すぐに回収します。
Tools don't replace understanding¶
A multimeter does not make the mains part safe.
A soldering iron does not fix a bad schematic.
An oscilloscope is not needed if plus and minus are swapped.
So the order is:
- Understand what should be connected.
- Check power supply.
- Check wiring.
- Check sensors and signals.
- Only then look for complex problems.
What will be in this section¶
02-multimeter.md- measuring DC voltage, continuity, resistance, fuses and why current measurement is more dangerous.03-usb-ttl-adapter.md- USB-UART adapters, TX/RX/GND, 3.3V/5V logic levels, flashing and logs.04-soldering.md- soldering wires, pads, modules, cold solder joints, heat shrink and strain relief.05-crimping-connectors.md- Dupont, JST, ferrules, Faston, terminals and crimp quality checks.06-st-link.md- ST-Link, STM32, SWD, board recovery after failed flashing.07-oscilloscope.md- PWM, UART, power sag, noise and critical safety warning about mains voltage.
What's worth buying properly¶
There are things you should not economize on:
- a multimeter with proper probes and continuity mode;
- a soldering iron with temperature control;
- quality solder and flux;
- a crimping tool for specific terminals;
- connectors and terminals rated for the needed current;
- heat shrink tubing;
- wires of correct gauge.
Poor crimping or weak terminals can cause more problems than bad firmware.
What you cannot do¶
You cannot:
- measure resistance on an energized circuit;
- measure current the same way you measure voltage;
- poke a multimeter into 110-230V AC without understanding safety;
- solder the power part "somehow";
- use Dupont for a heater;
- change wires while power is on;
- keep open mains parts on the table;
- think that if a wire "holds", the contact is good.
The essentials¶
- Multimeter is the first diagnostic tool.
- USB-UART is needed for logs, flashing and communication with UART devices.
- Soldering and crimping are different tasks, and for connectors, crimping is often better.
- ST-Link is needed when you work with STM32 and SWD.
- Oscilloscope is not needed by everyone, but it quickly shows signals, sag and noise.
- For the power part, contact quality, wire gauge and safety matter more than assembly looks.
Reference materials¶
- SparkFun: How to Use a Multimeter - multimeter basics: voltage, current, resistance, continuity.
- SparkFun: Troubleshooting Tips - hardware checks for power, connections and heat.
- SparkFun: Serial Communication - UART and basic serial communication logic.
- Adafruit: Guide to Excellent Soldering - practical soldering guide and connection quality.
- STMicroelectronics: ST-LINK/V2 User Manual - official ST-Link documentation and SWD/SWIM.