Smart Response XE: Difference between revisions
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What makes these nice is that they have a big graphical LCD and a qwerty keyboard. The microcontroller is an atmega128rf, which includes 2.4ghz radio hardware (zigbee or similar), as well as 128K flash, and 16K ram. | What makes these nice is that they have a big graphical LCD and a qwerty keyboard. The microcontroller is an atmega128rf, which includes 2.4ghz radio hardware (zigbee or similar), as well as 128K flash, and 16K ram. | ||
I bought a few the last time they were featured on Hackaday. These were | I bought a few the last time they were featured on Hackaday. These were supossed to be the next big IM-Me style hacked device, but I haven't seen that much development on them (just a couple demos in 2018-2019). Perhaps that's because there isn't a whole lot of information about them. | ||
==Software== | ==Software== | ||
The system is almost directly Arduino compatible, we just need to figure out a few things about the hardware. | The system is almost directly Arduino compatible, we just need to figure out a few things about the hardware. | ||
===Board/core=== | |||
Sparkfun released a dev board several years ago with the Atmega128RF on it. We can use the hardware definitions they provided - see https://learn.sparkfun.com/tutorials/atmega128rfa1-dev-board-hookup-guide for both the software and the pin definitions | |||
===LCD=== | |||
Resolution is 384x160. | |||
The u8g2 lib supports this screen/controller - https://github.com/olikraus/u8g2/wiki/u8g2setupcpp#st7586s-s028hn118a | |||
Configuration for SW spi and the other control pins is: | |||
<pre>U8G2_ST7586S_S028HN118A_1_4W_SW_SPI u8g2(rotation, clock, data, cs, dc [, reset]); | |||
U8G2_ST7586S_S028HN118A_1_4W_SW_SPI u8g2(U8G2_R0, 13, 11, 7, 24 ,18);</pre> | |||
HW SPI works too, you just don't need to specify pins 13 and 11 (clock and data). | |||
Latest revision as of 13:50, 19 January 2020
Smart Response XEs are one of those handheld electronic student answer things used by schools. It's been discontinued for a while, and there a bunch out there on eBay for pretty cheap (~$5-$8)
What makes these nice is that they have a big graphical LCD and a qwerty keyboard. The microcontroller is an atmega128rf, which includes 2.4ghz radio hardware (zigbee or similar), as well as 128K flash, and 16K ram.
I bought a few the last time they were featured on Hackaday. These were supossed to be the next big IM-Me style hacked device, but I haven't seen that much development on them (just a couple demos in 2018-2019). Perhaps that's because there isn't a whole lot of information about them.
Software
The system is almost directly Arduino compatible, we just need to figure out a few things about the hardware.
Board/core
Sparkfun released a dev board several years ago with the Atmega128RF on it. We can use the hardware definitions they provided - see https://learn.sparkfun.com/tutorials/atmega128rfa1-dev-board-hookup-guide for both the software and the pin definitions
LCD
Resolution is 384x160.
The u8g2 lib supports this screen/controller - https://github.com/olikraus/u8g2/wiki/u8g2setupcpp#st7586s-s028hn118a
Configuration for SW spi and the other control pins is:
U8G2_ST7586S_S028HN118A_1_4W_SW_SPI u8g2(rotation, clock, data, cs, dc [, reset]); U8G2_ST7586S_S028HN118A_1_4W_SW_SPI u8g2(U8G2_R0, 13, 11, 7, 24 ,18);
HW SPI works too, you just don't need to specify pins 13 and 11 (clock and data).