3″ Touchscreen
This is the first touchscreen that I made for the Joshua bus . It’s no so big, but because it’s a touchscreen you can work with different menu’s levels.
Based on this touchscreen I have made a application note that’s real popular.
Power switcher
The power switcher has a simple task in the Joshua bus and that´s switching mains 240V on and off. This is used for example for the kitchen light, garden light and a pair of active loudspeakers.
In the first design i used the Tiny2313, in this processor there is no possibility for an bootloader for remote firmware update,
so in the new revision we use the M16.
Logan
Logan is a 8 channel pc based logic analyzer. The samples are made with a pic processor and via usb showed on the pc.
It’s not my design, but i want share it with you because as embedded designer you must have a logic analyzer.
No pcb designed, but simple on proto board.
High voltage parallel programmer
High voltage parallel programmer for Atmel avr processor’s in Dip8 & Dip14 package. Original design by Chan, pcb by me. Also are other components selected that are easy availible in europe.
Some downloads;
Schematic in Eagle 4.15
Avrxtool32.zip the software
Partslist
Giveio.sys I/O driver required for windows nt/xp,vista not tested.
Nixie Clock
Inspired by the Nixie clock in “Nutz & Volts” magazine from October 2006 I like to make my own.
In the original design they used the xtal from the cpu for the clock source, in my design we use a Ds-1307 realtime clock that synchronize every hour with a NTP server on the internet. This is accomplished through the Joshua bus and the TCP/IP gateway. Now we have always the exact time. The function of the clock are controlled with the Joshua bus, or with the buttons on the back side.
After some modifications from the 170V booster the clock is now working fine. The booster voltage was dropping below 100V when there was more then 1 tube connected. With the help of some nixie experts we changed the coil in a larger one, 170V is now ok.
Designed the top and bottom plate with front panel designer from Schaeffer and ordered the panels.
