= HF8V = / = SP8WJT = / = SP0106RZ =
HF-5113
PROJECT: HF-5113
DESCRIPTION: Simple TTL low frequency generator
STATUS: u z
PROJECT START DATE: 2010
LOCALISATION: --
DOCUMENTATION:
PCB: TPD20001
DIMENSIONS: 35 x 30 mm
CPU: ATTINY13
BRAND: ATMEL
FAMILY: AVR
FLASH: 1K
RAM: 64
EEPROM: 64
MAX CLOCK: 20MHz
CPU CATALOG NUMBER: UC-020
THN ADDRESS: 0xB1
UC TYPE: 0x04
HF-5113 is simple TTL low frequency generator with my software. It was made with microprocessor module HF-12232 as an ad-hoc simple project without case. In fact this project can be quickly reactivated just by flashing HF-5113 software to HF-12232 module.
Circuit description
BAND:
1/ 30 - 300 kHz
2/ 3 - 30 kHz
3/ 300 - 3000 Hz
4/ 30 - 300 Hz
5/ 3 - 30 Hz
6/ 0.3 - 3 Hz
Functions:
BAND - choosing band
START - starting generation
UP - higher frequency
DOWN - lower frequency
No frequency readout or calibration is provided. I just measured it by external frequency counter. There is 256 steps on every band, what means that you need to make 128 cliks to set frequency in the middle of choosen band, it wasn't very convinient but worked at least. I used it for some rarely made measurments.
[1] ATTINY13 datasheet
[2] ATTINY13 product page
[3] Programator AVR ISP HF-6003
[4] Programator AVR ISP HF-60101
[5] HF-10060 Standard for AVR programming interface
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