Sinister SiddharthLei JiaxiJeshvanthchew kiat
Published

Smart Cashier

This project aims to develop a solution to have an auto cashier that people can use to scan their food/items without the need of a cashier.

IntermediateShowcase (no instructions)3 hours3
Smart Cashier

Things used in this project

Hardware components

M5Stack FIRE IoT Development Kit (PSRAM 2.0)
M5Stack FIRE IoT Development Kit (PSRAM 2.0)
×3
SG90 Micro-servo motor
SG90 Micro-servo motor
×1
Time-of-Flight (ToF) VL53L0X Laser Ranging Unit (MCP4725/)
M5Stack Time-of-Flight (ToF) VL53L0X Laser Ranging Unit (MCP4725/)
×1
Mini RFID Unit RC522 Module Sensor
M5Stack Mini RFID Unit RC522 Module Sensor
×2
M5Stack RGB Unit with NeoPixel RGB LED (SK6812)
M5Stack RGB Unit with NeoPixel RGB LED (SK6812)
×1
I2C Hub 1 to 6 Expansion TCA9548A Module
M5Stack I2C Hub 1 to 6 Expansion TCA9548A Module
×1

Software apps and online services

UIFlow - Desktop IDE

Story

Read more

Schematics

capture_jlqC5I5m0u.JPG

Code

Entrance Welcome

Python
When a person passes the TOF sensor (comes to the cashier), a green light flashes to welcome them and indicate to them that they have entered the cashier.
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Conveyor Code

Python
Person places their groceries on the conveyor belt. TOF sensor scans it and conveyor belt moves item to the cashier system.
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Cashier System

Python
When the conveyor belt moves the item, the item will pass the RFID sensor. Each grocery has an RFID tag. When the RFID sensor senses this tag, it will input the item into the system and add up the prices and display everything on the display. It will also output a color (based on color of item like apple=red orange=orange) on the RGB unit. Once the person is done placing all the items, they can see the total prices and items on the display. Then they will check out using their cards on another RFID sensor and then the display will show an exit message.
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price:$1.50 Added to the cart</field></shadow></value><next><block type=\"math_change\" id=\"y1[bn;+jY#wgs}Bx%chs\"><field name=\"VAR\" id=\"`yfg.vASIate?Wersv=$\">Totalcost</field><value name=\"DELTA\"><shadow type=\"math_number\" id=\"NMr{GKzf13^a|D_A#^GH\"><field name=\"NUM\">1.5</field></shadow></value></block></next></block></statement><next><block type=\"controls_if\" id=\"G]4|HUdMKD!#$(]c#Mk3\"><value name=\"IF0\"><block type=\"logic_compare\" id=\"U~0EiENHkV9/g#WolJoZ\"><field name=\"OP\">EQ</field><value name=\"A\"><block type=\"rfid_uid\" id=\"KA!e]C-21A-O+Zv,i`~?\"><field name=\"RFID\">rfid0</field></block></value><value name=\"B\"><block type=\"text\" id=\"qbeS]BIekBq]P#3pe#{b\"><field name=\"TEXT\">c2ecf011cf</field></block></value></block></value><statement name=\"DO0\"><block type=\"label_set_text\" id=\"Wk|wa}=U9v1DJGhyM[dX\"><field name=\"COMPONENT\">label6</field><value name=\"TEXT\"><shadow type=\"text\" id=\"xO=DQ0lli)D285;]Zt]W\"><field name=\"TEXT\">Milk price:$2.50 Added to the cart</field></shadow></value><next><block type=\"math_change\" id=\"j1+s{d]YW*Wc?qb^7c$W\"><field name=\"VAR\" id=\"`yfg.vASIate?Wersv=$\">Totalcost</field><value name=\"DELTA\"><shadow type=\"math_number\" id=\"+Ps3=1u4L?Sv*e=+Z,S4\"><field name=\"NUM\">2.5</field></shadow></value></block></next></block></statement><next><block type=\"controls_if\" id=\"Fr(Y-paE?r$(iglp$,sb\"><value name=\"IF0\"><block type=\"rfid_cardOn\" id=\"?x98dpsxH#s}(~_zj_vj\"><field name=\"RFID\">rfid3</field></block></value><statement name=\"DO0\"><block type=\"label_set_mode\" id=\"fn{keV4_5inKk`^]T8o~\"><field name=\"COMPONENT\">label0</field><field name=\"MODE\">hide</field><next><block type=\"label_set_mode\" id=\"za?Ei*W9Y]xlfmIzqIi%\"><field name=\"COMPONENT\">label1</field><field name=\"MODE\">hide</field><next><block type=\"label_set_mode\" id=\"Ck|%V*h;9MUBICO%9A@`\"><field name=\"COMPONENT\">label2</field><field name=\"MODE\">hide</field><next><block type=\"label_set_mode\" id=\"Ry*364PiH(vD8?rq!@0a\"><field name=\"COMPONENT\">label3</field><field name=\"MODE\">hide</field><next><block type=\"label_set_mode\" id=\"9I)Rktw#w9R=gordTz(5\"><field name=\"COMPONENT\">label4</field><field name=\"MODE\">hide</field><next><block type=\"label_set_mode\" id=\"dj_l%ZwE+%b:Xos=okNB\"><field name=\"COMPONENT\">label5</field><field name=\"MODE\">hide</field><next><block type=\"label_set_mode\" id=\"y[`%0pL|cLuJgA6V~HX=\"><field name=\"COMPONENT\">label6</field><field name=\"MODE\">hide</field><next><block type=\"label_set_mode\" id=\"kuPV]Y]jmo[B5P6[@%(T\"><field name=\"COMPONENT\">label7</field><field name=\"MODE\">hide</field><next><block type=\"label_set_mode\" id=\"zBlkIsN_rO*([n+Dd{xT\"><field name=\"COMPONENT\">label8</field><field name=\"MODE\">hide</field><next><block type=\"label_set_mode\" id=\"g=yjwY_z:_FJc^.MF(oV\"><field name=\"COMPONENT\">label9</field><field name=\"MODE\">hide</field><next><block type=\"label_set_mode\" id=\"GKkVE~/va~O~#ZncKkGK\"><field name=\"COMPONENT\">label10</field><field name=\"MODE\">show</field><next><block type=\"label_set_text\" id=\"R}mpknEub67O3Y7LxW9x\"><field name=\"COMPONENT\">label11</field><value name=\"TEXT\"><shadow type=\"text\" id=\"NLg!Y(EGIvnx~#:fr@N~\"><field name=\"TEXT\">Hello M5</field></shadow><block type=\"variables_get\" id=\"nfH0ZK1FTH-eb:FOYP/!\"><field name=\"VAR\" id=\"`yfg.vASIate?Wersv=$\">Totalcost</field></block></value><next><block type=\"label_set_mode\" id=\"cvAh`:VoYSDx9B%2JUya\"><field name=\"COMPONENT\">label12</field><field name=\"MODE\">show</field><next><block type=\"label_set_mode\" id=\":6Pxdv%r([J(W5y$If96\"><field name=\"COMPONENT\">label13</field><field name=\"MODE\">show</field><next><block type=\"timer_delay\" id=\"?^%6^dwILODXVV1OXAw4\"><value name=\"DELAY\"><shadow type=\"math_number\" id=\"$]vj78!K7$J~P+G=2]Ld\"><field name=\"NUM\">5</field></shadow></value><next><block type=\"variables_set\" id=\"ql}[#`}@leHWH_^-z,-s\"><field name=\"VAR\" id=\"`yfg.vASIate?Wersv=$\">Totalcost</field><value name=\"VALUE\"><block type=\"math_number\" id=\"]wNl2cO[}Bc4UQ1NmrtE\"><field name=\"NUM\">0</field></block></value><next><block type=\"label_set_mode\" id=\")y[6}sbu9$NRalqaha4p\"><field name=\"COMPONENT\">label0</field><field name=\"MODE\">show</field><next><block type=\"label_set_mode\" id=\"ul[64Bf6;)7^sek55d*@\"><field name=\"COMPONENT\">label1</field><field name=\"MODE\">show</field><next><block type=\"label_set_mode\" id=\"6l1)*e4-LGK$#uQ9+|!?\"><field name=\"COMPONENT\">label2</field><field name=\"MODE\">show</field><next><block type=\"label_set_mode\" id=\"VQal9Mde4R[I%|Vx.3pa\"><field name=\"COMPONENT\">label3</field><field name=\"MODE\">show</field><next><block type=\"label_set_mode\" id=\"EMbS+1xR])BNG:kwXAe=\"><field name=\"COMPONENT\">label4</field><field name=\"MODE\">show</field><next><block type=\"label_set_mode\" id=\";RW9zAaJxb!Dk9?:+-DN\"><field name=\"COMPONENT\">label5</field><field name=\"MODE\">show</field><next><block type=\"label_set_mode\" id=\"o,60#cvjq3@k^@w+{zX=\"><field name=\"COMPONENT\">label6</field><field name=\"MODE\">show</field><next><block type=\"label_set_mode\" id=\";O46zrB?:zET7qiNG=W(\"><field name=\"COMPONENT\">label7</field><field name=\"MODE\">show</field><next><block type=\"label_set_mode\" id=\"FX/gycU;mL/VO]FdL;g;\"><field name=\"COMPONENT\">label8</field><field name=\"MODE\">show</field><next><block type=\"label_set_mode\" id=\"ahD],DwuQftKU-hv%7.`\"><field name=\"COMPONENT\">label9</field><field name=\"MODE\">show</field><next><block type=\"label_set_mode\" id=\"fs5GmQr:${1~SX#FkYpX\"><field name=\"COMPONENT\">label10</field><field name=\"MODE\">hide</field><next><block type=\"label_set_mode\" id=\"}sw9h.qALDFcDhXQ1Tr`\"><field name=\"COMPONENT\">label11</field><field name=\"MODE\">hide</field><next><block type=\"label_set_mode\" id=\"P64:}NXEhhyWI!VvZ)HR\"><field name=\"COMPONENT\">label12</field><field name=\"MODE\">hide</field><next><block type=\"label_set_mode\" id=\"?*fp{kTXiGT_brXjoDW`\"><field name=\"COMPONENT\">label13</field><field name=\"MODE\">hide</field></block></next></block></next></block></next></block></next></block></next></block></next></block></next></block></next></block></next></block></next></block></next></block></next></block></next></block></next></block></next></block></next></block></next></block></next></block></next></block></next></block></next></block></next></block></next></block></next></block></next></block></next></block></next></block></next></block></next></block></statement></block></next></block></next></block></next></block></next></block></statement></block></next></block></next></block></next></block></next></block></next></block></next></block><block type=\"rfid_cardOn\" id=\"lalrFU)m#f3%S=u~CB}j\" disabled=\"true\" x=\"890\" y=\"170\"><field name=\"RFID\">rfid0</field></block><block type=\"timer_delay\" id=\"brGbw5o}=(z.cVC])+dP\" disabled=\"true\" x=\"810\" y=\"410\"><value name=\"DELAY\"><shadow type=\"math_number\" id=\"gLl9ZO`/dV9[,us+o)K+\" disabled=\"true\"><field name=\"NUM\">0.5</field></shadow></value><next><block type=\"timer_delay\" id=\"}s_fLCCDbQEJr.`9i!.2\" disabled=\"true\"><value name=\"DELAY\"><shadow type=\"math_number\" id=\"$OMTk77bcnOL,?PR8WaS\" disabled=\"true\"><field name=\"NUM\">0.5</field></shadow></value></block></next></block>","Blockly.Remotes":[],"modules":["rgb"]}

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Sinister Siddharth

Sinister Siddharth

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I am a great gamer,programmer and I love theme parks
Lei Jiaxi

Lei Jiaxi

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Jeshvanth

Jeshvanth

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chew kiat

chew kiat

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