Waltech Systems

Waltech WBO₂

Open design digital wideband oxygen sensor controller

	Features: Uses an ATMEGA8 micro-controller and other common components Compact layout fits in a 1x2x3 inch housing Efficient heater controller minimizes heat Uses a Bosch LSU 4.2 sensor 2 sided board, no internal layers Source code, schematic and layout all provided with an open licence Voltage output (use0- 5v meter) Simulated narrow-band sensor output Comma separated data stream.	Download: Downlad source code (zip file) Schematic: image Gerber files (zip file) Parts list/BOM Kicad project (zip file) More: Hookup and operation manual Design manual Buy a completed unit

Waltech PLC-8

Open design Programmable Logic Controller

	Features: Uses an on board programmer, USBTINY Compact and all in one 10 amp relays Uses no-cost LDmicro software 2 sided board, no internal layers Source code, schematic and layout all provided with an open licence easy to repair, socketed chips	Download: Downlad on board programmer source code (.tar.zg file) PLC-8 schematic 1 PLC-8 Schematic 2 PLC-8 Schematic 3 PLC-4 schematic 1 PLC-4 Schematic 2 PLC-4 Schematic 3 RS232 Schematic Gerber files (zip file) More: Hookup and operation manual Software for linux Buy a completed unit