o Readme++

andrejpk · Jun 18, 2015 · 16b48f4 · 16b48f4
1 parent 32734e2
commit 16b48f4
Showing 1 changed file with 6 additions and 6 deletions.
diff --git a/adapter/README.md b/adapter/README.md
@@ -5,12 +5,12 @@ Since hand-wiring can be a little tedious, here are some PCBs that help
 with the wiring when using the `rpi-rgb-led-matrix` code.
 
    * [Passive-3](./active-3) Supports three parallel chains, directly connected
-     to the output of the Rapsberry Pi. Works, but usually it is better to buffer
-     the outputs using the ...
-   * [Active-3](./active-3) Like the active board, but supports three parallel
-     chains with level shifting.
-   * [Passive-RPi1](./passive-rpi1) adapter board to connect one panel to
-     Raspberry Pi 1
+     to the output of a Rapsberry Pi with 40 GPIO pins. Works, but usually it is better to
+     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.
+   * The [Passive-RPi1](./passive-rpi1) adapter board is to connect one panel to
+     Raspberry Pi 1 with 26 GPIO pins.
 
 ![Three Panels connected][three-panels]