2xBateries de tipus 18650 de 3,7volts / 4000mAh
(6,48euros) http://www.banggood.com/2PCS-MECO-3_7v-4000mAh-Protected-Rechargeable-18650-Li-ion-Battery-p-992718.html
(3,46 euros) https://www.aliexpress.com/item/2pcs-18650-3-7V-4000mAh-Rechargeable-Battery-for-LED-Flashlight/32536245733.html?spm=2114.01010208.3.38.d92EQK&ws_ab_test=searchweb0_0,searchweb201602_2_422,searchweb201603_1&btsid=be859c99-b0b7-4594-a18f-2c2d3a31a129

Portabateries de bateries de tipus 18650
(1,69 euros) http://www.banggood.com/Wholesale-Black-Plastic-Battery-Storage-Case-Box-Holder-for-2-x-18650-with-6-Inch-Wire-Leads-p-48962.html
(0,88 euros) https://www.aliexpress.com/item/With-Wire-Lead-Black-Plastic-2x18650-Battery-3-7V-Clip-Holder-Storage-Box-Case-Free-Shipping/32459536142.html?spm=2114.01010208.3.29.czJTF2&ws_ab_test=searchweb0_0,searchweb201602_2_422,searchweb201603_1&btsid=f864b3cf-b934-4b95-9509-5d1d20ec1ad1

Carregador de dues bateries de tipus 18650 a 1 A
(4,51 euros) http://www.banggood.com/High-Quality-18650-Lithium-battery-Charger-3_7V-4_2V-p-81721.html
(3,36 euros) https://www.aliexpress.com/item/High-quality-Plug-100V-240V-2x18650-3-7V-Rechargeable-Li-Ion-Dual-Battery-Charger-Travel-Battery/32757808614.html?spm=2114.01010208.3.154.24li16&ws_ab_test=searchweb0_0,searchweb201602_2_422,searchweb201603_1&btsid=f4cea5e1-c326-4a2f-9ad9-4d7a4c785efb

Adaptador d'endoll americà a europeu
(1,25 euros) http://www.banggood.com/Wholesale--Flat-to-Round-Plug-Adapter-Converter-for-Europe-black-p-44091.html
(0,92 euros) https://www.aliexpress.com/item/1-Pcs-EU-Power-Supply-Adapter-In-Turn-American-UK-Standard-Europe-Converter-Two-Flat-Feet/32716159064.html?spm=2114.01010208.3.20.tQQ9p7&ws_ab_test=searchweb0_0,searchweb201602_2_422,searchweb201603_1&btsid=3204b25e-6713-49a7-88d2-15059c54a020

Convertidor de tensió de bateria a 5 volts amb sortida USB de classe A per a connectar arduino
(2,94 euros) http://www.banggood.com/DC-7V-24V-To-DC-5V-3A-USB-Output-Converter-Step-Down-Module-KIS3R33S-p-912110.html
(1,97 euros) https://www.aliexpress.com/item/5V-USB-Output-Converter-DC-7V-24V-To-5V-3A-Step-Down-Buck-KIS3R33S-Module-KIS/32608378787.html?spm=2114.01010208.3.12.3RuTCF&ws_ab_test=searchweb0_0,searchweb201602_2_422,searchweb201603_1&btsid=d2e40615-a695-4c87-b6d7-44b712b3a5a6

Convertidor de tensió de bateria a 5/6 volts a connectar el pont en H que controla el gir dels motors
(2,37 euros) http://www.banggood.com/5A-XL4005-DCDC-Adjustable-Step-Down-Module-Power-Supply-Converter-p-923600.html
(1,03 euros) https://www.aliexpress.com/item/Max-DC-DC-XL4005-Step-5A-Down-Adjustable-Power-Supply-Module-LED-Lithium-Charger-board/32677123695.html?spm=2114.01010208.3.12.DLfVag&ws_ab_test=searchweb0_0,searchweb201602_2_422,searchweb201603_1&btsid=15824bae-4538-43e7-8094-08c6048d0622

Pont en H
(2,83 euros) http://www.banggood.com/L298N-Dual-H-Bridge-DC-Stepper-Motor-Driver-Module-Controller-Board-p-914879.html
(1,21 euros) https://www.aliexpress.com/item/New-Dual-H-Bridge-DC-Stepper-Motor-Drive-Controller-Board-Module-L298N-for-Arduino-Free-Shipping/1740660574.html?spm=2114.01010208.3.21.nAE1t3&ws_ab_test=searchweb0_0,searchweb201602_2_10091_10090_10088_422_10089,searchweb201603_1&btsid=19b199a3-9ee6-48a9-99a6-b10a5cf708d1

Ultrasons
(1,79 euros) http://www.banggood.com/Wholesale-Ultrasonic-Module-HC-SR04-Distance-Measuring-Ranging-Transducer-Sensor-p-40313.html
(0,73 euros) https://www.aliexpress.com/item/1pcs-Ultrasonic-Module-HC-SR04-Distance-Measuring-Transducer-Sensor-for-Arduino-HC-SR04-HCSR04/32551049686.html?spm=2114.01010208.3.1.eLZHld&ws_ab_test=searchweb0_0,searchweb201602_2_422,searchweb201603_1&btsid=c9ade74b-276b-4c93-84c2-bc69647da91c

Sensors infrarojos frontals
(4,41 euros) http://www.banggood.com/5-Channel-Tracking-Sensor-Module-Board-Trace-Module-Infrared-Detection-p-90950.html
(6,23 euros) https://www.aliexpress.com/item/Tracing-Module-Tracking-Sensor-5-Channel-Road-Tracing-Senson-Mobule/32710347643.html?spm=2114.01010208.3.64.BBWkhz&ws_ab_test=searchweb0_0,searchweb201602_2_422,searchweb201603_1&btsid=d8ad1114-47b5-40c1-8732-88366a9314af

Sensors infrarojos posteriors
(2,54 euros) http://www.banggood.com/2Pcs-5V-Infrared-Line-Tracking-Sensor-Module-For-Arduino-p-944245.html
(1,48 euros) https://www.aliexpress.com/item/New-5V-Infrared-Line-Track-Tracker-Tracking-Follower-Sensor-Shield-For-Arduino-Free-Shipping/32705357984.html?spm=2114.01010208.3.155.yLdcX2&ws_ab_test=searchweb0_0,searchweb201602_2_422,searchweb201603_1&btsid=2c556bd9-cfe7-4de2-80c9-2bc2a8cc445f

Mòdul Bluetooth HC-06
(4,44 euros) http://www.banggood.com/HC-06-Wireless-Bluetooth-Transceiver-RF-Main-Module-Serial-For-Arduino-p-80364.html
(2,46 euros) https://www.aliexpress.com/item/HC-06-Bluetooth-serial-pass-through-module-wireless-serial-communication-from-machine-Wireless-HC06-Bluetooth-Module/32551751866.html?spm=2114.01010208.3.21.ZOsbVB&ws_ab_test=searchweb0_0,searchweb201602_2_422,searchweb201603_1&btsid=51ceaafa-a073-417d-a720-b74dca0b12b5

Connectors femella/femella
(1,70 euros) http://www.banggood.com/40pcs-20cm-Female-to-Female-Jumper-Jump-Cable-Wire-For-Arduino-p-75612.html
(0,75 euros) https://www.aliexpress.com/item/Free-Shipping-80pcs-dupont-cable-jumper-wire-dupont-line-female-to-female-dupont-line-20cm-1P/1728848121.html?spm=2114.01010208.3.1.vwI3hY&ws_ab_test=searchweb0_0,searchweb201602_2_422,searchweb201603_1&btsid=ead4637c-84f7-4e1f-9a86-d51df7e9fc49

Xassís del robot
(16,43 euros) http://www.banggood.com/4WD-Smart-Robot-Car-Chassis-Kits-With-Strong-Magneto-Speed-Encoder-p-917007.html
(15,37 euros) https://www.aliexpress.com/item/4WD-Robot-Car-Kits-For-arduino/1707926702.html?spm=2114.01010208.3.10.arKM6l&ws_ab_test=searchweb0_0,searchweb201602_2_10091_10090_10088_422_10089,searchweb201603_1&btsid=6c744b27-522c-43c0-ae47-40a290c7c1ee

Arduino Nano 328
(4,02 euros) http://www.banggood.com/ATmega328P-Arduino-Compatible-Nano-V3-Improved-Version-With-USB-Cable-p-933647.html?rmmds=search
(3,01 euros) https://www.aliexpress.com/item/Nano-3-0-controller-compatible-with-arduino-nano-CH340-USB-driver-with-CABLE-NANO-V3-0/32686415387.html?spm=2114.01010208.3.2.YxOFvO&ws_ab_test=searchweb0_0,searchweb201602_2_10091_10090_10088_422_10089,searchweb201603_1&btsid=d45b30bb-3e09-48c3-9f70-83335fd40cee

Preu total per Banggood:   57,40 euros
Preu total per AliExpress: 42,86 euros