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6 changes: 6 additions & 0 deletions adapter/README.md
Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,12 @@ with the wiring when using the `rpi-rgb-led-matrix` code.
buffer the outputs using the ...
* [Active-3](./active-3) board. Supports three parallel chains with active buffering
and 3.3V -> 5V level shifting for best reliability. Requires SMD soldering.

As another option you can buy it from these locations not affiliated with this project.
They are given to help you locate premade boards but no guarantees are given or implied:
* https://www.electrodragon.com/product/rgb-matrix-panel-drive-board-raspberry-pi/
($3/board, but fairly long and/or expensive shipping from HKG)
* Seller #2 (fill me)
* The [Passive-RPi1](./passive-rpi1) adapter board is to connect one panel to
Raspberry Pi 1 with 26 GPIO pins.

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