LeMaker Guitar Review
Pi Rtc Dio
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I really need to build another Pi Rtc Dio without the real time clock version – the LeMaker Guiter already has an RTC, so I don’t need to add one when I add the I2C MCP23017’s for more I/O.
I used WiringLMK, it includes the MCP23017 extension, so it was easy to light the red LED’s.
See the examples on Gordon’s site, the MCP23017 support just worked.
Pi Jumper
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After getting I2C running (see previous page) it was easy to compile the WiringLMK PCF8591 I2C demo.
It ran immediately.
I did end up changing one line
printf (” %5.2f “, (double)value * 3.3 / 255.0) ;
I changed the 3.3 to 5.0 because I was using the 5V I2C header on Pi Jumper to connect the inexpensive Ebay pcf8591 module.
EZasPi
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After mounting my EZasPi on the Guitar Base Board, I added a small breadboard, blue super bright LED with a 1k resistor in series.
Then using the gpio utility, I turned the LED on!
gpio -g mode 17 out
gpio -g write 17 1
Pretty EZ if you ask me 🙂
Article Index
- Introduction
- A Closer Look at LeMaker Guitar & Base Board
- Feature Comparison
- Operating Systems, Software Compatibility
- Common Applications, WiFi, Bluetooth
- Hardware Compatibility
- More on Hardware Compatibility
- Benchmarks: Booting&Apps, Compiling Emacs, Sysbench
- Benchmarks: iperf client & server, NBench, UnixBench
- Benchmarks: hdparm, dd, Documentation, Support, Conclusion
