Freenove 4WD Smart Car Kit for Raspberry Pi 4 B 3 B+ B A+, Face Tracking, Line Tracking, Light Tracing, Obstacle Avoidance, Colorful Light, Ultrasonic Camera Servo Wireless RC

First, the product works if you assemble it correctly (see my video). My kid and I really enjoyed the features such as auto-driving, obstacle avoidance and etc. The kit really deserves five-star for its functionalities. However, there are a few issues. One issue is that the car kit doesn't come with rechargeable 18650 batteries. I ended up spending some time on Amazon doing research and buying a bundle of these expensive batteries and charger. I wish the car kit can include batteries and charge a little extra. My second major issue is that the manual is poorly written. There are duplicated sections all over and it can confuse people. Most importantly, some key installation steps should be emphasized. For example, my kid was stuck between Step 9-11 on Page 51 (duplicated on Page 72) when attaching camera module to servo package. After quite a while of watching the video of assembled car like a detective to gather clues, I realized that one needed to attach a white rocker arm on Step 9. Then Page 73 says there are two ways to fix the servo 0. I don't think the second way works. Another example is when wiring the ribbon for camera (Page 54). A kid would simply insert a ribbon into the slot. Step 1 on Page 54 should emphasize that one needs to pull the lever out first, insert the ribbon and then push the lever in. In retrospect, the car worked great. I am surprised that the installation of software is very smooth. The assembling process was frustrating sometimes and there is a lot of room for improvement and simplification.

マニュアル（PDF）や組み立て動画があるので、初心者でも簡単に作れると思います。 組み立てた後、動作せず、私の手順が違うのかとサポートの方とメールでやり取りしました。 まず驚いたのが、１日以内で返信をくれるという返信の速さ。 メールの内容も丁寧で分かりやすかったです。 何度かやり取りした結果、新しい基盤を送ってくださり、無事に動くようになりました。 トラブルが起きたとしてもメーカーのサポートが充実しているので、安心して購入できる品だと思います！

It is a very cool robot; my daughter managed to assemble it by herself. Configuring Raspberry is easy, but some "hacking" skills can't hurt! ;) The only problem was with moving in the wrong direction. I changed a few lines of code, changes can be found in my repository https://www.amazon.de/review/create-review/?ie=UTF8&channel=glance-detail&asin=B07YD2LT9D

Liked the kit, but the instructions has some holes and the mobile apps required to control the model leavs a bit to wish for. But over all it has potential and I will most definitely have fun with this one. All the parts are there, well packed and easy to follow instructions, but a bit un clear at some parts. Will get more kits. And I'm planning to upgrade this one.

Essendo sempre stato appassionato di informatica e programmazione, ho voluto anche avvicinarmi anche all'elettronica. Per farlo ho comprato un Raspeberry ed un kit, sempre di Freenove, ed a quel punto ho scoperto un mondo appassionante fatto si di elettronica, ma anche di sistemi operativi (Debian) e programmazione (Python). Ho quindi comprato questo kit e l'ho assemblato abbastanza facilmente pur non avendo una grande abilità manuale, darei solo il consiglio di aggiungerci anche minuteria di riserva, perdere qualche vitina è facile. Finito il montaggio sono passato alla parte programmazione che è assolutamente ben guidata e spiegata, ed è veramente interessante e se ci sono dubbi il servizio di supporto risponde molto velocemente e risolve il problema. Concludendo, ora funziona tutto perfettamente, ma sto rivedendo i programmi per ampliare e migliorare le funzioni. Non vi dico che lo ricomprerei, vi dico che a brevissimo comprerò il kit del cane.