跟讀練習: Making a 360° Controller Smaller than a Penny! - 通過影片學習英語口語

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this is probably the smallest Wireless sensory controller it is designed to be a tiny maker friendly Arduino compatible module which can sense light and perform 9-axis motion Fusion making

it easier to build wearables tiny robots and cool iot projects computer turn off my robot but with hundreds of Arduino compatible boards already out there why design a new one

let's say you want to build a tiny robot you need motors, wheels, drivers, a small wireless controller, sensors, a battery and a charger suddenly your tiny robot is not so tiny anymore so in this project I

want to simplify as many of these connections as possible to build a more compact brain for our tiny robot my only condition is that has to be small as possible packing as many features as

it can this really depends on our microcontroller first I was going to use this tiny BLE module it's one of the smallest modules out there but it's not that popular in the maker Community the esp32 on

the other hand is a much more popular iot solution and there are already some tiny modules available this is probably one of the smallest esp32 modules that exist on the market which is called the esp32

xiao so something this size is feasible but the only thing that I don't like about this is that it has an external antenna this is not going anywhere but I prefer to have the antenna as solid state

directly integrated inside the PCB there are various families and series available but I decided to go with the C3 which has an on-board antenna that is FCC certified having an

non-chip antenna would probably make our board a bit smaller but it would be too expensive to certify as a development board so this tiny module seemed like the best option this supports both BL

and WiFi and works with the Arduino framework it can also be programmed directly through the USB data lines without need of extra chips some modules also include a switch to get the esp into

boot mode in case it freezes but honestly that rarely happens so to save space we're not going to add the switch in case that happens you can always reset the power or make a physical short

between ground and the boot pin the gpios took a bit of space but it was important to use standard pitch connectors this makes the board compatible with other sensors modules and headers keeping

everything maker friendly the castellated pins also allow for easier soldering if needed as you can see the SP takes most of the area so we have to place the USBC on the bottom side this leaves

us with a little bit of space left just enough to add a tiny 3.3 volt voltage regulator an LED and a battery charger one PCBway box later we got our board it was very satisfying to look at how small

this was but I was still a bit disappointed that I couldn't fit any sensors on this first prototype soldering this tiny double-sided board was quite a challenge but shortly after assembly I

realized that there was a major issue with the design the power through the esp32 had to be supplied through the 3.3 volts regulator which had to be supplied through the battery which had

to be charged through the charging chip which had to be powered through the USB cable but without the battery the charger could only Supply a few milliamps so I couldn't just power it through

a USBC alone this meant that the challenge had become even greater apart from the sensors I had to fit a new bigger chip with a pass through USB battery charger allowing the board to be powered

through either a battery a USB cable or both while we're here we should also probably fix the fact that the battery has to be soldered onto the board this can either rip off the pads or risk

accidental shorting I spent days on Alum designer exploring all its tools to figure out how to make this happen and it took weeks of refinement and multiple iterations to get it right being small

is was going to set this board apart from the rest so every millimeter and every track really counted this took a long time to design because every change had to fully sinking but having Alum

365 in my pocket meant that I could brainstorm on the project from anywhere I go click the link in the video's description to try out this handy tool

the codecell lives on an 18.5 by 18.5 mm PCB the first tradeoff that I had to make was pushing the antenna out of the board's Edge this is a very common thing and the is completely safe but it added an extra 5 mm on one of the sides

freeing up some more space on the bottom side of the PCB the second tradeoff was moving the USBC underneath the ESP this was a huge win because it added five extra pins but before I start getting

hate comments from RF Engineers just hear me out in the RF word any signals close to the antenna can lower its efficiency and range the USBC is in a safe region but when the cable is connected it's

kind of a different story but when testing this with different USBC cables the attenuation was barely noticeable this probably because most USBC cables are shielded so overall this was the best

option when prioritizing space I don't think it's that big of an issue because most probably the USBC cable will mostly be used for charging and the application will shut down during charging a

small downside to this approach is that the board had to be slightly thicker to make space for the Cable but with this new design change I managed to fit an addressable led a 3.3 Voltage regulator

the new charging chip a battery connector and 2 100 microfarad bulk capacitors these were the largest capacitors I could fit in this space and from testing they were enough to supply DC motors PCB motors

actuators and the 945 LEDs mounted on my spherical display on the bottom side we have the ESP 32 C3 a light sensor and a motion sensor to simplify how these devices are configured and

talked to each other we developed an easy to use Arduino Library which can get you started with a few lines of code this is supported by multiple examples and tutorials on our website the onboard

infrared light sensor lets you play around with depth gestures Auto dimming and proximity detection there is also an optional motion sensor this has an advanced inertial measurement unit

which is kind of a pricey upgrade the development boards from adafruit alone cost around $25 but I think it's well worth the investment on putting this on the code cell because it integrates a

3-axis accelerometer gyroscope and magnetometer internally it also combines the data from these three sensors using a Sensor Fusion algorithm to read tap detection, step counting, activity

guessing, angular rotations and much more now the cool thing about codecell is that you can combine all the data from these sensors with popular esp32 applications so you can easily create

a wireless remote prompt jokes with AI and even connect it with Alexa computer turn off my LED computer turn on my LED

computer please turn on my robot computer turn off my robot

I'm super proud with how this project turned out and I'm personally using it to build smaller and smaller robots we're planning to turn some of these into kits using Codecell

as the main platform I'll be showing more of these robots in the coming weeks but for now I just want to see what you create with it if you'd like to start building with codecell head on to microbots.io and it should arrive in a few days you can either buy it with

both sensors or just the light sensor which is a more affordable solution to get you started with the basic applications if you enjoyed this video please share it, hit the like button and consider

subscribing if you haven't already huge thank you to all my patreons for supporting my work

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流利口語所需的一切

AI 發音評分逐句打分

音標練習掌握每個音

詞彙學習建立你的詞庫

詞彙遊戲邊玩邊學

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FOR YOU

本課的詞彙與口語要點

這段影片共有 41 個句子、1398 個單詞可供跟讀。講話部分時長為 8:30。說話人語速自然，每分鐘約 165 個詞，接近日常對話。只有 77% 的單詞屬於英語最常用的 3,000 詞，詞彙難度較高。

影片中的重點詞彙

影片中 15 個值得學習的單詞，附發音和釋義：

單詞	發音	釋義
sensor 名詞	/ˈsɛn.sɚ/	感測器 /感測器
robot 名詞	/ˈɹoʊ.bɑt/	機器人 /機器人, 機械人 /機械人
module 名詞	/ˈmɑd͡ʒul/	模組 /模組
antenna 名詞	/ænˈtɛn.ə/	觸角 /觸角, 觸鬚 /觸鬚
chip 名詞	/t͡ʃɪp/	籌碼
charger 名詞	/ˈt͡ʃɑɹd͡ʒɚ/	充電器 /充電器
maker 名詞	/ˈmeɪk.ɚ/	製造者 /製造者
wireless 形容詞	/ˈwaɪ(jə)ɹ.ləs/	無線 /無線
compatible 形容詞	/kəmˈpæt.ə.bəl/	相容的, 相容的
connect 動詞	/kəˈnɛkt/	連線 /連線
pin 名詞	/pɪn/	別針 /別針
boot 名詞	/but/	靴子, 長靴 /長靴
combine 動詞	/kəmˈbaɪn/	結合 /結合, 組合 /組合
axis 名詞	/ˈæksɪs/	軸 /軸, 軸心 /軸心
voltage 名詞	/ˈvəʊltɪd͡ʒ/	電壓 /電壓

影片中出現的短語動詞

單詞	釋義
turn off 動詞	關 /關, 關掉 /關掉
figure out 動詞	弄清楚
try out 動詞	試用 /試用
turn out 動詞	原來 /原來

影片中的語法

說話人最常用的結構，並附上影片中的原話：

結構	影片中的用法
被動語態 be + 過去分詞 — 強調發生了什麼，而不是誰做的	is designed · is called · be programmed
定語從句 who / which + 從句 — 補充說明人或事物	module which can · market which is · Library which can

需要注意的發音

說話人用了 12 次縮略和弱讀形式，例如 we're, couldn't, don't。請按聽到的簡短形式來說。

“th” 音: thick /θɪk/, underneath /ˌʌndɚˈniθ/, algorithm /ˈælɡəɹɪðm̩/
“sh” 和 “zh” 音: detection /dɪˈtɛk.ʃən/, shortly /ˈʃɔɹtli/, efficiency /ɪˈfɪʃ.ən.si/, shield /ˈʃild/, rotation /ɹoʊˈteɪʃən/
長單詞——注意重音位置: compatible /kəmˈpæt.ə.bəl/, regulator /ˈɹɛɡ.ju.leɪ.tɚ/, disappointed /ˌdɪsəˈpɔɪnɪd/, efficiency /ɪˈfɪʃ.ən.si/, affordable /əˈfɔɹ.də.bəl/

如何用這段影片練習

先完整聽一遍影片，不要開口，記下不認識的單詞。
先用 0.75 倍速逐句跟讀，熟練之後再回到正常速度。
錄下自己的聲音並與原聲對比，特別注意 sensor, robot, module 這類單詞。

什麼是跟讀法？

跟讀法 (Shadowing) 是一種有科學依據的語言學習技巧，最初開發用於專業口譯員的培訓，並由多語言者Alexander Arguelles博士普及。這個方法簡單而強大：您在聽英語母語原聲的同時立即大聲重複——就像是一個延遲1-2秒緊跟說話者的影子。與被動聽力或語法練習不同，跟讀法強迫您的大腦和口腔肌肉同時處理並模模擬實的講話模式。研究表明它能顯著提高發音準確性，語調，節奏，連讀，聽力理解和口語流利度——使其成為雅思口語備考和真實英語交流最有效的方法之一。

影子跟讀法: 閱讀完整分步指南 →

跟讀練習: Making a 360° Controller Smaller than a Penny! - 通過影片學習英語口語

選擇練習模式

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