Difference between revisions of "RDing TEMPer"
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* Temperature sensor: [http://www.fairchildsemi.com/pf/FM/FM75.html Fairchild FM75] ([http://www.fairchildsemi.com/ds/FM/FM75.pdf datasheet]), I2C slave addres '''0x4f''' | * Temperature sensor: [http://www.fairchildsemi.com/pf/FM/FM75.html Fairchild FM75] ([http://www.fairchildsemi.com/ds/FM/FM75.pdf datasheet]), I2C slave addres '''0x4f''' | ||
* I2C EEPROM: Unknown, yet (markings were removed), I2C slave addres '''0x50''' | * I2C EEPROM: Unknown, yet (markings were removed), I2C slave addres '''0x50''' | ||
* Oscillator: 6MHz | |||
Main chip pinout: | Main chip pinout: | ||
| Line 45: | Line 46: | ||
| GND | | GND | ||
| | | | ||
| | | 3.3V | ||
| Oscillator | | Oscillator | ||
| Oscillator | | Oscillator | ||
| Line 51: | Line 52: | ||
| USB D- | | USB D- | ||
| USB D+ | | USB D+ | ||
| | | LED | ||
| | | | ||
| | | | ||
Revision as of 13:44, 24 June 2012
The RDing TEMPer is a USB-based temperature logger.
See RDing TEMPer/Info for more details (such as lsusb -vvv output) about the device.
Hardware
- Main chip: Unknown, yet (markings were removed)
- Temperature sensor: Fairchild FM75 (datasheet), I2C slave addres 0x4f
- I2C EEPROM: Unknown, yet (markings were removed), I2C slave addres 0x50
- Oscillator: 6MHz
Main chip pinout:
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SCL | SDA | GND | 3.3V | Oscillator | Oscillator | USB D- | USB D+ | LED |
I2C EEPROM pinout:
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
|---|---|---|---|---|---|---|---|
| GND | GND | GND | GND | SDA | SCL | GND | 3.3V |
Photos
Device, front
Device, back
Device, USB
Device, opened
PCB, front
PCB, back
Sensor
Random pads on the side
Main chip, microscope
Sensor, microscope
Protocol
HID-based.