My latest toy, 100 Watts/Channel Class D Amplifier.
Saturday, December 17, 2011
Friday, October 14, 2011
TV/DVD USB EEPROM Programmer by RBT(c)
Introducing the Hi-Speed TV/DVD USB EEPROM Programmer by RBT(c)
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| EN25T80 SPI EEPROM position |
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| 24Cxx I2C EEPROM position. |
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| I2C EEPROM |
Kits now READY!!
Tuesday, October 11, 2011
Tuesday, October 4, 2011
Digital Component Tester by RBT(c)
My Digital Component Tester by RBT(c)
Here is my version of Digital Component Tester.
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| Testing 1N5819 Schottky diode |
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| Testing a 68R resistor. |
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| SS8050 NPN transistor. |
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| 22uF Electrolytic capacitor. |
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| Component side of PCB. |
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| Copper Side.. |
Wednesday, September 14, 2011
USB I2C/SPI EEPROM Programmer
Here is a USB version of I2C/SPI EEPROM Programmer using the famous CH341A Module
Quick view of CH341A USB Module:
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| Testing I2C Interface |
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| SPI EEPROM Interface. |
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| Closed-up of CH341A USB Module |
Software GUI
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| 24Cxx I2C EEPROM |
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| 25Txx SPI EEPROM |
Update:
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| casing decals |
Kit will be available soon!!
Monday, August 22, 2011
High Resolution Capacitance Meter
High Resolution Capacitance Meter measures in 0.01pF digits. Total range 0pF to 50uF.
Features:
1. It has very high resolution; from 6 to 7 digits! (Others have 3 or 4 digits)
2. It has a wide range; 0pF to 50uF. (Others do not go over 0.1uF or 1uF)
3. It uses only a single cheap PIC 16F628. (Others use two ICs)
4. It does not need calibration! (Others need calibrating with a special test cap)
5. It can do auto-zeroing, floating zero and negative capacitance (relative to zero).
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| PCB & LCD |
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| Copper side. |
Some Test measurement:
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| With NO capacitor connected. |
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| With 15pF ceramic cap. |
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| 0.1uF Mylar cap. |
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| 0.47uF Mylar cap. |
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| 10uF Electrolytic cap. |
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| 22pF ceramic. |
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