According to world health organization (who), there are 285 million people who are visually impaired (vi), in which 246 million have low vision and 39 million are totally blind. about 90% of visually impaired live in low income settings. totally, 82% of visually impaired who live with blindness are aged 50 and above. however, it is estimated that, number of people with vision impairment could triple due to population growth and ageing. for example, by 2050, 115 million people will be blind up from 39 million in 2020. in india, with 7.8 million blind people, 45 million are visually challenged which leads to 20% of 39 million blind population. visually impaired people rely on write code, braille as a medium for reading and communication through touch sensation. braille cell consists of six raised dots per character arranged in two columns with 3 dots each. visually impairedneeds assistive technology devices to access e-newspapers, e-books, browsing internet etc.. refreshable braille display (rbd) devices convert text information from an electronic document (computer or sd card) to braille dots for the blind to read. most contemporary rbds contain only a single line of 20 to80 braille cells due to the high manufacturing cost and largevolume of piezoelectric bimorph actuators they utilize. actuators are the devices which cause a machine or device to operate. various actuators used in contemporary rbds include piezo-electric actuator, electro-magnetic actuator, electro active polymer, electro rheological fluid actuator, shape memory alloys, thermo-pneumatic actuators and solenoids.but the main issue behind those actuator is its high power consumption, complex design, requirement of cooling phase after operation, high cost, inability to provide multi-line display, portability, scalability, etc..in order to develop a portable and multi-line rbd, a massmanufacturable, light weight, low power and integratedactuator or alternative technology need to be developed. present invention provides a device for converting e-text onto braille compactable raised dots and/or tactile graphics on the surface of the pad which have the capacity of forming and deforming raised dots repeatedly to achieve a refreshable multiline braille surface with maximum efficiency, lower heating, longer life and smoother, portable and user friendly capability of understanding and displaying all indian and international braille languages. the said device involves the use of an electronically controlled punch head unit to print e-text as braille characters on a refreshable, continuously looped, rubber-coated thin metal sheet/flexible print sheet. the punch head unit consists of the head guide, stepper motor, servo motor, gear plate, servo bracket, a pair of punch block drive and punch block driven gears with a seven-faced punch for raised dots to form a half braille cell, micro servo motors and cam. braille characters are punched by activated punch head as raised braille dots on continuously rotating, rubber-coated thin metal sheet/flexible print sheet loop. the printed sheet is driven by a stepper motor and guided by the roller shafts mounted in sheet guides at both ends for its continuous loop movement and to flatten it to make a refreshable display. servos and steppers were connected to a 24 volt power supply.the preprogrammed raspberry pi is secured in a case andinterfaced with stepper and servos through its gp i/o files.the python program in the raspberry pi converts text files tobraille compactable codes.based on the code, command is given to the servo and stepper motors to punch the raised dots in the display sheet.while stepper-1 is positioned the sheet, stepper-2 is used toposition the punch head block.while the micro servo is used to position one of the faces ofthe seven faced punch head block, servo2 is used to push thepunch block against the sheet to form the impression with thehelp of a cam.on-board raspberry pi camera captures the image of the textwhich is later processed with our unique text detection andextraction algorithm to identify and print the text detectedfrom the image.once the raspberry pi is programmed and connected alongwith the power system to the prototype device, a e-text file is initiated for printing on the refreshable braille surface.after printing, the printed surface is positioned for readingand then surface is rolled to a flat surface with a pair ofrolling rods and the surface is again positioned for printing.this is repeated many times to form a refreshable display.