Recent content by DrWho

I still don't have the PICAXE-28--shell-pcb to test the "resistor" option but having PICAX-08M I generated a short code for the MAX3421 SPI interface and guess what: I can set/reset the GPO-OUT pins - see attached picture. As far as the keyboard goes, do I really need to fully enumerate the...

At this stage I'm not worried about levels as it looks the PICAXE shield has 3.3V option. My question is about how to make half duplex SPI from 2 pins SPI DI and SPI DO (on the PICAXE-28X2 side). What do you think about solution from the attached picture?

Maxim_IC offers EVKit based on the MAX3421 - USB host IC, that can be directly connected to Arduino. If AXE401 development board is compatible with Arduino (I/Os), is it possible to program PICAXE 28X2 on the AXE401 board so when connected with MAX3421-EVkit would work as an USB host?

Can someone provide complete schematic diagram of this card? There are 4 columns of pads on both sides, some of them are connected to PICAXE-18X and some are connected to ULN2803. Also, there are unpopulated components:X1, R8, R7 and R5. What is their purpose?