Well, I finally had my expectations fulfilled - Luxeon SP-1 voltage stabilizer/cutter features ATMEGA48V-10PU (Flash: 4k, EEPROM: 256, RAM:512). Not only that, it is installed in DIP socket! Buy from Luxeon, they're hacker-friendly ;-).
I bought the device actually for a wattmeter it features (which fact is hard to figure out from common specs found in the shops, I accidentally read somebody mentioning it on a forum). The wattmeter is of course not bright - for a lamp rated 100W it shows 88W, and for more powerful equipment (like perforator) understates wattage even more (maybe it's difference between real and apparent power factor).
Still, for $17 you get Arudino-alike with voltage/current sensor and hacking possibility. Woot!
- Relay: Coil: 24VDC, 5A/240VAC
- Coil transformer LR-019B
- 2 buttons
- 2 LEDs (red & green)
- 3-digit 7-segment LED indicator