# Accessibility for sight impaired users

**URL:** <https://discourse.zynthian.org/t/accessibility-for-sight-impaired-users/5899>\
**Category:** Using Zynthian\
**Created:** [May 28, 2021, 1:58pm UTC](https://discourse.zynthian.org/t/accessibility-for-sight-impaired-users/5899 "2021-05-28T13:58:01Z")\
**Posts on this page:** 1\
**Showing post:** 108

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**Author:** ![riban](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/riban/32/2331_2.png) [@riban](https://discourse.zynthian.org/u/riban)\
**Post date:** [June 15, 2021, 6:01am UTC](https://discourse.zynthian.org/t/accessibility-for-sight-impaired-users/5899/108 "2021-06-15T06:01:55Z")

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Motorised faders work out about £20 each which would amount to £1000 for 50 without the extra hardware and development cost. That is pretty steep!

An alternative might be to use push / pull solenoids like [these from eBay](https://www.ebay.co.uk/itm/203265431345?_trkparms=aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D232661%26meid%3D91a2336d4fce40fca09c19dbee4e7a27%26pid%3D101096%26rk%3D2%26rkt%3D12%26sd%3D333877440206%26itm%3D203265431345%26pmt%3D1%26noa%3D0%26pg%3D2332490%26algv%3DSimplAMLv5PairwiseWebWithBBEV2bAndUBSourceDemotionWithUltimatelyBoughtOfCoviewV1%26brand%3DUnbranded&_trksid=p2332490.c101096.m3021&amdata=cksum%3A20326543134591a2336d4fce40fca09c19dbee4e7a27%7Cenc%3AAQAGAAACMKouSpvBIvZMs%252BoLsdFFIxx1l4%252B0k3lYxNmswo37NoBt%252Bh0wA4HzJXnnxw%252BMAC4TWZPrH%252FA9KX9FYTUUJgkbfyGk5X%252BcBlYU3HT1x3zJSj8YGO%252BLBxtul%252BkLi8AcHT76fmS%252FIPSjGgCbML%252BOdwe0PqqTOzKfp4jfwqrruzhT96va%252B%252B2nSSnGritp8WV%252BjLZXG9K0c1iYy5ojlNRg%252BnZYnuzVRWTQ49CaIPMrp%252FRV8Mct8tEYY%252Bh1jHiN58NFn5%252FR2m1VTrOdQGodAcvnvaQawOP0lJf57Z40PKBI73z5U%252FQ5AkoZyF1MUahSLr%252FoBMuRWwTMrgogpbQyROXce6cql5L90YXykMlxwUo5%252FPKeF7%252BtwB9JiM%252BqbJWe%252B8ok%252Fvke%252FbZGbVf28r2DYL01o%252F5XjEJAg%252FTP%252FBI1vNi0wi4i%252FwtQ29Vhx8R%252F6nluxZJR%252F5Nb%252FXbVd3ClyXyZg2Icn1J9PSN%252B2TW6hxZygBZS8G0VWNROGrOwNVJ9U1tZO9oXv19lN4tlZkFyZvmoMZJ%252Fif0F21rJjEEZ%252BkJvgZHP5uqqHSaDVG8YH%252BPhU4z4bAXyfQZNVp%252FUV3IfVxmt18pzEhK3Fl2DBQSTZw6pC303LNDJ6XGfJYXcs24Si%252Fpw%252B34TdOIJ0Lwvv5LRnf7wVrzzImSspqiemx8FiABlbfmMnX9D%252BpTVop3mvVaiydEcdCtMe2TvJsuh3LhrVwRlvKzdGTDrqX7XUl1YCeFiFhYclSasDkDP%7Campid%3APL_CLK%7Cclp%3A2332490) at £2.50 each plus micro-switches and drawbars. 50 of these would cost £125 plus associated electronics and development. The drawbar could be designed with sufficient friction to hold in place but free enough to allow solenoid to move. Micro-switch would detect position. Microcontroller would provide USB or network interface to host.

[Edit] I know they may not be called drawbars on a church organ but it was the work that came to mind as I typed this!

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