From 816be15f1e20c49afdefa340943b88889c64be0f Mon Sep 17 00:00:00 2001 From: Roar Fredriksen Date: Mon, 2 Oct 2017 16:43:11 +0200 Subject: [PATCH] Create README.md --- Electrical/README.md | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 Electrical/README.md diff --git a/Electrical/README.md b/Electrical/README.md new file mode 100644 index 00000000..068af650 --- /dev/null +++ b/Electrical/README.md @@ -0,0 +1,19 @@ +# Electrical Design + +## Explained +The design is using an opamp as a compined level converter and a schmitt trigger, in order to convert +the HAN signal into a 3.3V compatible serial format. As the input levels on the opamp is much higher +than our 5V supply, we are rectifying and smoothing the HAN signal to use for a supply here. (VDD) + +As a power source, we've used a micro USB connector, providing 5V, just as this is cheap and easy. However, +no part of the circuit will need any other power than the 3.3V, so any combination of power source and +regulator that provides the 3.3V will do. + +The ESP8266 setup is a rather standaraized setup and will allow for programming the ESP directly on the +board, if needed. During programming, it might be neccessary to disconnect the incoming HAN. + +## Schematics +![Schematics](./Schematics.png) + +## PCB +![PCB](./PCB.PNG)