William At MyBlueRoom
New Member
I'm going to build one of three PIC based microcontroller projects for sale to students and hobbiests etc.
They may all eventually get built but I can't figure out which to build first and did I miss something vital.
So the two best replies (as chosen by myself and I will include the reason) will get a PCB of the winning project free.
All designs are meant to work with and compliment the Inchworm ICD2. Also the approximate retail prices in CDn dollars.
The first design Firefly $25 - $39 is a combination of PIC ZIF programming socket and 16F88 Tutor. Can be built as just a trainer, ZIF or both. Although the Firefly seems simple you really can program and learn almost all the features of 16F88 and there are many, almost everything a 16F877 has with fewer pins, way to use SSP (I2C slave / SPI) though.
**broken link removed**
They may all eventually get built but I can't figure out which to build first and did I miss something vital.
So the two best replies (as chosen by myself and I will include the reason) will get a PCB of the winning project free.
All designs are meant to work with and compliment the Inchworm ICD2. Also the approximate retail prices in CDn dollars.
The first design Firefly $25 - $39 is a combination of PIC ZIF programming socket and 16F88 Tutor. Can be built as just a trainer, ZIF or both. Although the Firefly seems simple you really can program and learn almost all the features of 16F88 and there are many, almost everything a 16F877 has with fewer pins, way to use SSP (I2C slave / SPI) though.
- 40 pin ZIF socket for 16F & 18F series 8/14/18/28/40pin PICs
- 16F88 can be programmed independantly of the ZIF
- IR (New not yet in schematic, can be switched RB0)
- 3 BiColor Red / Green LED muxed
- 3 Pushbuttons
- RS232 in hardware half duplex inverters
- POT
- 2.5V approx vref (may include a TL431 option)
- Connectors: User (iButton, etc), Servo / Buzzer etc.
- 16F877A @ 4MHz (suggestions?)
- 16x2 LCD with backlight
- 4x4 switch array
- RS485 with simple RS232 mode (jumper selectable)
- 350 slot solderless breadboard
- IR, POT, Pushbutton
- Connectors for: iButton, I2C, ICD2, 2 x Servo/CCP
- 20pin expansion (for possible SPI UART or Ethernet, etc)
- I2C (hardware) or serial (software) to 16x2 LCD including backlight
- I2C or serial to 4 Digit 7 segment display
- I2C or serial to 4 Relays and 4 Switch inputs
**broken link removed**