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Step 5Prototype - Microcontroller
Then I wired up a TINY2313 on the solderless proto board and connected the display and the ISP cable to it for testing the updated firmware for Charlieplexing that I had used on a previous project.
After flashing the software it didn't work at all and I couldn't flash any new software into the chip. Being used to AVR's I realized that I had the wrong fuse settings so the crystal oscillator didn't work. That's easy to fix by installing an external clock source to it and flash the fuses to the correct values so I just connected a 10 MHz oscillator module to the XTAL1-pin and flashed it. Now everything was working just fine. I'd like the display to be a bit brighter though, but is is clearly visible even if I shine a 40W halogene light straight on the display so I will not bother to add additional drivers.
To be able to communicate with the microcontroller I needed a more stable timing source than the internal RC-oscillator in the microcontroller, so I added a 6 MHz crystal and two capacitors.
After flashing the software it didn't work at all and I couldn't flash any new software into the chip. Being used to AVR's I realized that I had the wrong fuse settings so the crystal oscillator didn't work. That's easy to fix by installing an external clock source to it and flash the fuses to the correct values so I just connected a 10 MHz oscillator module to the XTAL1-pin and flashed it. Now everything was working just fine. I'd like the display to be a bit brighter though, but is is clearly visible even if I shine a 40W halogene light straight on the display so I will not bother to add additional drivers.
To be able to communicate with the microcontroller I needed a more stable timing source than the internal RC-oscillator in the microcontroller, so I added a 6 MHz crystal and two capacitors.
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