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helmasur · Mar 5, 2021 · d915828 · d915828
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+# Slot car speed controller for two 1:24 cars using a PIC16F18313
+
+This was made as a plug-in replacement upgrade for the horrible capacitor popping controller found in the Hot Wheels slot car sets from Mattel.
+
+![Hot Wheels](/images/hotwheels.png)
+
+# Features:  
+* It doesn't break if you short circuit a track.  
+* Actual speed control, you can now go smoothly from still to full speed, instead of "still, jump to 70%, smooth to 100%".
+
+Two self resetting poly-fuses limit the current to 500mA per car, at 12V this should be enough for most 1:24 cars. I use 9V for the Hot Wheels circuit.
+
+![Schematic](/images/schematic.png)
+
+![PCB bottom](/images/pcb_bottom.png)
+
+![PCB top](/images/pcb_top.png)
+
+![Pinout](/images/pinout.png)
diff --git a/images/hotwheels.jpg b/images/hotwheels.jpg
diff --git a/images/pcb_bottom.png b/images/pcb_bottom.png
diff --git a/images/pcb_top.png b/images/pcb_top.png
diff --git a/images/pinout.png b/images/pinout.png
diff --git a/images/schematic.png b/images/schematic.png