blueroomelectronics
Well-Known Member
The next kit I'd like to make will be the Ladybug LAN Controller. It's in the final design stages but since it's mostly on paper at the moment it can be changed at any time.
I'll post the schematic as it currently stands in the next day or two. The reason for this thread is to allow the community here at Electro Tech a chance to add their opinion and watch a project grow in to a final PCB. (I'll post everything but the PCB artwork)
Here's a description and a photo of a similar product, the kit version won't include a nice case like the one in the photo.
Ladybug description
The goal is a useful low cost controller, I'm not interested in adding more than 6 relays or 4 inputs to this design although keep in mind I've been tossing around an option to allow at build time the option of adding 1 Analog direct input to RAx for every relay omitted (hard wired jumper on the PCB)
Also things like a case would be of interest to me, DIN rail?
If you're looking for temperature control there is an RS485 thermostat in the works Cricket (very low power, I2C temperature, 16F917, 2 digit LCD glass, latching relay, switch mode power supply all to keep it very low power (read cool) so the temperature readings will be accurate)
**broken link removed**
No this picture is not the Ladybug but similar in concept...
I'll post the schematic as it currently stands in the next day or two. The reason for this thread is to allow the community here at Electro Tech a chance to add their opinion and watch a project grow in to a final PCB. (I'll post everything but the PCB artwork)
Here's a description and a photo of a similar product, the kit version won't include a nice case like the one in the photo.
Ladybug description
- ENC28J60 Ethernet controller
- PIC18F4620 40pin DIP
- LCD or Expansion connector 8 (RD0-7) +3 (RE0-2) +SPI+pwr
- 4 pushbuttons
- RS485 *may contain both DS275 or SN75176 sockets opinions?
- 6 Relays (4 Normally open, 2 NC,NO)
- 4 current limited 3-30VDC inputs, jumpers for contact closeure inputs
- CLKOUT on ENC28J60 (it's programmable 25MHz/1,2,3,4,8) to 18F4620 CLKIN (or would it be better on a CCP or TMR1 input?)
- LEDs (you want lots or the basics?)
- Screw terminals
- 8VAC/VDC to 18VAC/VDC power supply (just a 7805 and bridge)
The goal is a useful low cost controller, I'm not interested in adding more than 6 relays or 4 inputs to this design although keep in mind I've been tossing around an option to allow at build time the option of adding 1 Analog direct input to RAx for every relay omitted (hard wired jumper on the PCB)
Also things like a case would be of interest to me, DIN rail?
If you're looking for temperature control there is an RS485 thermostat in the works Cricket (very low power, I2C temperature, 16F917, 2 digit LCD glass, latching relay, switch mode power supply all to keep it very low power (read cool) so the temperature readings will be accurate)
**broken link removed**
No this picture is not the Ladybug but similar in concept...
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