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20 Pin AVR Development Terminal
sku: DEV-00038
Description: A fun package full of potential projects! Development board for 20 pin AVR microcontrollers with power supply circuit, crystal oscillator circuit, reset IC, RS232 port, STK ICSP port, 16x2 alphanumeric LCD display, 6 button keyboard, Dallas touch button port, frequency input, relay with 5A/250VAC contacts, buzzer, status LED.Features:
- FR-4, 1.5 mm (0.062"), green solder mask, white silkscreen component print
- Four mounting holes 3.3 mm (0.13")
- Dallas touch button port
- Frequency input
- RS232 DB9 female connector
- RS232 TTL levels output connector
- ICSP 5x2 pin connector for in-circuit programming with AVR-PG1B or AVR-PG2B
- Voltage regulator +5V, 78L05 and filtering capacitors
- Quartz crystal oscillator circuit 10MHz
- Reset IC ZM33064
- DIL20 microcontroller socket
- Relay with 5A/250VAC contacts with screw terminals
- Status LED for the relay
- Buzzer
- DC Power jack
Dimensions: 120x36 mm (4.7x1.4")
Documents:
- Datasheet
- Schematic
- AVR ICSP connector
- avr-mt.asm - Demo software (Thanks to Dr. Raphael Holzer)
Supported Devices: AT90S1200, AT90S2313, ATtiny2313
Board does not come with AVR installed. Please see a list of related items below.
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Comments
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If you would like to tell us more, you can fill out our form if you need some psycho-suggestive questions. Go to the form.
When I bought this I had ZERO embedded hardware experience. I would reccomend this board to newbies, it has the advantage of being premade with the most common components, and the processor is easy to code for.
This board has even fell on my shag carpet from a few feet up (by accident) with no ill effects.
Also, that assembly code is EXTREMELY useful. Thank you Dr. Holzer ;)
If I want to do IO (other than built-in buttons, light, and lcd) do I have to solder into the buttons or hijack one of the freq or ibutton inputs?
Similarly for interrupts, it looks like the ibutton goes to an interrupt pin, do you just hijack that and use it as an interrupt?
I'm working on a project where I'd like to be able to read a pwm signal from a maxbotix sonar rangefinder and output a pwm signal to a motor. It seems like I'll have to do some hijacking though... (too bad there weren't more pins broken out for general use).
Anyways, any ideas/suggestions are greatly appreciated.