Hi,
A new PCB from Wilfred, the ZXCHR$x16 External Enhanced Video Character Generator(ZX81/TS1000).
http://quix.us/timex/rigter/ZXCHR$X4.html
Kicad project/Gerber: (ROM image not include, i can't find it.)
http://abandon.pcbs.free.fr/wilfrigter/CHRx16/
Have fun.
Wilf Rigter's CHR$x16 [PCB-Kicad]
Wilf Rigter's CHR$x16 [PCB-Kicad]
Xavier ...on the Facebook groupe : "Zx81 France"(fr)