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Updated bom (markdown)

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Mark van Renswoude 2018-11-08 20:48:26 +01:00
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electronics/bom.md
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@ -21,7 +21,7 @@ The printer I use is a Canon PIXMA iP7250, which is not all that expensive. For
### Transparencies
Use transparencies designed for your printer type. The ones I use are Esselte 57161.
http://www.123inkt.nl/Esselte-57161-transparanten-voor-inkjet-printers-50-bladen-57161-i22534-t33400.html
[[http://www.123inkt.nl/Esselte-57161-transparanten-voor-inkjet-printers-50-bladen-57161-i22534-t33400.html]]
### Circuit board
I don't use boards with a presensitized photoresist layer, so any plain single or double sided board will do. Don't get the cheap cardboard ones though. Be aware that the process is different with the presensitized boards (positive vs negative exposure, different chemicals), so don't follow my guide if you want to etch those.
@ -43,7 +43,7 @@ Note: I forgot most of my chemistry lessons, so any chemist will probably yell a
Used to develop the photosensitive film. The recommended solution is 4,8%.
Purchased as a 37% solution:<br>
https://www.deoplosmiddelspecialist.nl/kopen/natriumsilicaat-glaswater
[[https://www.deoplosmiddelspecialist.nl/kopen/natriumsilicaat-glaswater]]
Added 100 ml of the sodium metasilicate solution to 750 ml of demineralised water.
@ -55,6 +55,6 @@ https://www.deoplosmiddelspecialist.nl/kopen/Ijzerchloride-40-1L
Used to remove the remaining photosensitive film after etching. The recommended solution is 1%.
Purchased as a 10% solution:<br>
https://www.deoplosmiddelspecialist.nl/kopen/Natronloog10
[[https://www.deoplosmiddelspecialist.nl/kopen/Natronloog10]]
Added 100 ml of the sodium hydroxide solution to 900 ml of demineralised water.