CanBlade: A CAN module for the propeller

Cluso99

I have produced a CAN module for use with the propeller. It has an inbuilt 3V3 regulator and required 5V regulated (6V max).

The CanBlade specifications are...

1. PCB 30x30mm (1.2"sq) and fits into a Hammond 1551M box
2. An RJ11 (4p4c) or RJ45 (8p8c) is used for the CAN bus
3. A MCP2551 is used for the CAN driver/receiver
4. The Propeller can handle the CAN protocol, or an ATtiny44/84 can be fitted to handle the CAN protocol
5. If the ATtiny44/84 is fitted, it can be programmed by the Propeller
6. Connection to the propeller is normally via 2 pins (4 pins are required when programming the ATtiny44/84)
7. Connection to the propeller is via a 1x6 pin interface (it can be wired to the PropPlug connection on a propeller)
8. An optional CAN terminator link is provided on the pcb.

Note the CAN bus normally provides power and ground. This voltage is usually 12V but can vary. The actual CAN signalling is 5V and GND. I am proposing to use 5V and GND as the power because this is readily available in the home.

The CAN protocol has not yet been implemented in either the Propeller or the ATtiny44/84 as far as I am aware. This is a WIP for me. Any help with this would be greatly appreciated.

I chose to use the RJ11/RJ45 because splitters are cheap as is the 4-wire and CAT5 8-wire cable. I envisige a home (or my boat) being controlled over a CAN bus, and therefore intend to make a few CAN modules to do various interfaces. This board will act as a modular interface to this.

I am about to produce another run of these pcbs. They take 4 weeks and cost me $2.40 ea plus $5 freight.

Is anyone interested in some of these pcbs (assembled or unassembled) ???

Here is a pic of the pcb...